diff mbox series

[v3] build: fix soname info for 19.11 compatiblity

Message ID 20191212115826.2167871-1-bruce.richardson@intel.com (mailing list archive)
State Accepted, archived
Headers
Series [v3] build: fix soname info for 19.11 compatiblity |

Checks

Context Check Description
ci/checkpatch warning coding style issues
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-testing success Testing PASS
ci/iol-mellanox-Performance success Performance Testing PASS
ci/travis-robot warning Travis build: failed
ci/Intel-compilation fail apply issues

Commit Message

Bruce Richardson Dec. 12, 2019, 11:58 a.m. UTC 
  The soname for each stable ABI version should be just the ABI version major
number without the minor number. Unfortunately both major and minor were
used causing version 20.1 to be incompatible with 20.0.

This patch fixes the issue by switching from 2-part to 3-part ABI version
numbers so that we can keep 20.0 as soname and using the final digits to
identify the 20.x releases which are ABI compatible. This requires changes
to both make and meson builds to handle the three-digit version and shrink
it to 2-digit for soname.

The final fix needed in this patch is to adjust the library version number
for the ethtool example library, which needs to be upped to 2-digits, as
external libraries using the DPDK build system also use the logic in this
file.

Fixes: cba806e07d6f ("build: change ABI versioning to global")

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---

V3:
* fixed issues with building ethtool example app.
V2:
* adjusted the meson version to work correctly with both 2-part and
  3-part ABI versions, so it will work correctly even with no changes
  for a 21.x ABI version number
* adjusted the versions of the experimental libs so that they are
  consistent between meson and make, and also consistent with v19.11

---
 ABI_VERSION                   |  2 +-
 config/meson.build            | 16 +++++++++++++---
 drivers/meson.build           |  4 ++--
 examples/ethtool/lib/Makefile |  2 +-
 lib/meson.build               |  4 ++--
 mk/rte.lib.mk                 | 13 ++++++++-----
 6 files changed, 27 insertions(+), 14 deletions(-)

Comments

Ray Kinsella Dec. 12, 2019, 12:30 p.m. UTC | #1 
On 12/12/2019 11:58, Bruce Richardson wrote:
> The soname for each stable ABI version should be just the ABI version major
> number without the minor number. Unfortunately both major and minor were
> used causing version 20.1 to be incompatible with 20.0.
> 
> This patch fixes the issue by switching from 2-part to 3-part ABI version
> numbers so that we can keep 20.0 as soname and using the final digits to
> identify the 20.x releases which are ABI compatible. This requires changes
> to both make and meson builds to handle the three-digit version and shrink
> it to 2-digit for soname.
> 
> The final fix needed in this patch is to adjust the library version number
> for the ethtool example library, which needs to be upped to 2-digits, as
> external libraries using the DPDK build system also use the logic in this
> file.
> 
> Fixes: cba806e07d6f ("build: change ABI versioning to global")
> 
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> ---
> 
> V3:
> * fixed issues with building ethtool example app.
> V2:
> * adjusted the meson version to work correctly with both 2-part and
>   3-part ABI versions, so it will work correctly even with no changes
>   for a 21.x ABI version number
> * adjusted the versions of the experimental libs so that they are
>   consistent between meson and make, and also consistent with v19.11
> 
> ---
>  ABI_VERSION                   |  2 +-
>  config/meson.build            | 16 +++++++++++++---
>  drivers/meson.build           |  4 ++--
>  examples/ethtool/lib/Makefile |  2 +-
>  lib/meson.build               |  4 ++--
>  mk/rte.lib.mk                 | 13 ++++++++-----
>  6 files changed, 27 insertions(+), 14 deletions(-)
> 
> diff --git a/ABI_VERSION b/ABI_VERSION
> index 2e73f8d2a..fcc01369a 100644
> --- a/ABI_VERSION
> +++ b/ABI_VERSION
> @@ -1 +1 @@
> -20.1
> +20.0.1
> diff --git a/config/meson.build b/config/meson.build
> index 364a8d739..01911ecf9 100644
> --- a/config/meson.build
> +++ b/config/meson.build
> @@ -20,9 +20,19 @@ pver = meson.project_version().split('.')
>  major_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
>  abi_version = run_command(find_program('cat', 'more'),
>  	abi_version_file).stdout().strip()
> -# experimental libraries are versioned as 0.majorminor versions, e.g. 0.201
> -ever = abi_version.split('.')
> -experimental_abi_version = '0.@0@@1@'.format(ever.get(0), ever.get(1))
> +
> +# Regular libraries have the abi_version as the filename extension
> +# and have the soname be all but the final part of the abi_version.
> +# Experimental libraries have soname with '0.major'
> +# and the filename suffix as 0.majorminor versions,
> +# e.g. v20.1 => librte_stable.so.20.1, librte_experimental.so.0.201
> +#    sonames => librte_stable.so.20, librte_experimental.so.0.20
> +# e.g. v20.0.1 => librte_stable.so.20.0.1, librte_experimental.so.0.2001
> +#      sonames => librte_stable.so.20.0, librte_experimental.so.0.200
> +abi_va = abi_version.split('.')
> +stable_so_version = abi_va.length() == 2 ? abi_va[0] : abi_va[0] + '.' + abi_va[1]
> +experimental_abi_version = '0.' + ''.join(abi_va)
> +experimental_so_version = '0.' + ''.join(stable_so_version.split('.'))
>  
>  # extract all version information into the build configuration
>  dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int())
> diff --git a/drivers/meson.build b/drivers/meson.build
> index 72eec4608..4b17662b7 100644
> --- a/drivers/meson.build
> +++ b/drivers/meson.build
> @@ -132,10 +132,10 @@ foreach class:dpdk_driver_classes
>  
>  			if is_experimental != 0
>  				lib_version = experimental_abi_version
> -				so_version = experimental_abi_version
> +				so_version = experimental_so_version
>  			else
>  				lib_version = abi_version
> -				so_version = abi_version
> +				so_version = stable_so_version
>  			endif
>  
>  			# now build the static driver
> diff --git a/examples/ethtool/lib/Makefile b/examples/ethtool/lib/Makefile
> index 9da7dc3ba..649474127 100644
> --- a/examples/ethtool/lib/Makefile
> +++ b/examples/ethtool/lib/Makefile
> @@ -18,7 +18,7 @@ endif
>  # library name
>  LIB = librte_ethtool.a
>  
> -LIBABIVER := 1
> +LIBABIVER := 0.1
>  
>  # all source are stored in SRC-Y
>  SRCS-y := rte_ethtool.c
> diff --git a/lib/meson.build b/lib/meson.build
> index 6ceb5e756..0af3efab2 100644
> --- a/lib/meson.build
> +++ b/lib/meson.build
> @@ -113,10 +113,10 @@ foreach l:libraries
>  
>  			if is_experimental != 0
>  				lib_version = experimental_abi_version
> -				so_version = experimental_abi_version
> +				so_version = experimental_so_version
>  			else
>  				lib_version = abi_version
> -				so_version = abi_version
> +				so_version = stable_so_version
>  			endif
>  
>  			# first build static lib
> diff --git a/mk/rte.lib.mk b/mk/rte.lib.mk
> index 655a1b143..b1a8372cc 100644
> --- a/mk/rte.lib.mk
> +++ b/mk/rte.lib.mk
> @@ -11,14 +11,16 @@ EXTLIB_BUILD ?= n
>  # VPATH contains at least SRCDIR
>  VPATH += $(SRCDIR)
>  
> -ifneq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
> -LIBABIVER := $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
> -else ifeq ($(LIBABIVER),)
> +LIBABIVER ?= $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
> +SOVER := $(basename $(LIBABIVER))
> +ifeq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
>  # EXPERIMENTAL ABI is versioned as 0.major+minor, e.g. 0.201 for 20.1 ABI
> -LIBABIVER := 0.$(shell cat $(RTE_SRCDIR)/ABI_VERSION | tr -d '.')
> +LIBABIVER := 0.$(shell echo $(LIBABIVER) | tr -d '.')
> +SOVER := 0.$(shell echo $(SOVER) | tr -d '.')
>  endif
>  
>  ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
> +SONAME := $(patsubst %.a,%.so.$(SOVER),$(LIB))
>  LIB := $(patsubst %.a,%.so.$(LIBABIVER),$(LIB))
>  ifeq ($(EXTLIB_BUILD),n)
>  CPU_LDFLAGS += --version-script=$(SRCDIR)/$(EXPORT_MAP)
> @@ -74,7 +76,7 @@ NO_UNDEFINED := -z defs
>  endif
>  
>  O_TO_S = $(LD) -L$(RTE_SDK_BIN)/lib $(_CPU_LDFLAGS) $(EXTRA_LDFLAGS) \
> -	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(LIB) -o $(LIB)
> +	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(SONAME) -o $(LIB)
>  O_TO_S_STR = $(subst ','\'',$(O_TO_S)) #'# fix syntax highlight
>  O_TO_S_DISP = $(if $(V),"$(O_TO_S_STR)","  LD $(@)")
>  O_TO_S_DO = @set -e; \
> @@ -133,6 +135,7 @@ $(RTE_OUTPUT)/lib/$(LIB): $(LIB)
>  	$(Q)cp -f $(LIB) $(RTE_OUTPUT)/lib
>  ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
>  	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so/')
> +	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so.$(SOVER)/')
>  endif
>  
>  #
> 

My input is still the same, I think a respin to fix v19.11 is preferable.
However this patch does fix the issue.

V19.11
[root@silpixa00396680 build]# readelf -d ./lib/librte_eal.so.20.0 | grep SONAME
11: 0x000000000000000e (SONAME)             Library soname: [librte_eal.so.20.0]

HEAD
[root@silpixa00396680 build]# readelf -d ./lib/librte_eal.so.20.1 | grep SONAME
11: 0x000000000000000e (SONAME)             Library soname: [librte_eal.so.20.1]

HEAD + FIX
[root@silpixa00396680 build]# readelf -d ./lib/librte_eal.so.20.0.1 | grep SONAME
11: 0x000000000000000e (SONAME)             Library soname: [librte_eal.so.20.0]

Thanks,

Ray K
Bruce Richardson Dec. 12, 2019, 1:02 p.m. UTC | #2 
On Thu, Dec 12, 2019 at 12:30:19PM +0000, Ray Kinsella wrote:
> 
> 
> On 12/12/2019 11:58, Bruce Richardson wrote:
> > The soname for each stable ABI version should be just the ABI version major
> > number without the minor number. Unfortunately both major and minor were
> > used causing version 20.1 to be incompatible with 20.0.
> > 
> > This patch fixes the issue by switching from 2-part to 3-part ABI version
> > numbers so that we can keep 20.0 as soname and using the final digits to
> > identify the 20.x releases which are ABI compatible. This requires changes
> > to both make and meson builds to handle the three-digit version and shrink
> > it to 2-digit for soname.
> > 
> > The final fix needed in this patch is to adjust the library version number
> > for the ethtool example library, which needs to be upped to 2-digits, as
> > external libraries using the DPDK build system also use the logic in this
> > file.
> > 
> > Fixes: cba806e07d6f ("build: change ABI versioning to global")
> > 
> > Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> > Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> > ---
> > 
> > V3:
> > * fixed issues with building ethtool example app.
> > V2:
> > * adjusted the meson version to work correctly with both 2-part and
> >   3-part ABI versions, so it will work correctly even with no changes
> >   for a 21.x ABI version number
> > * adjusted the versions of the experimental libs so that they are
> >   consistent between meson and make, and also consistent with v19.11
> > 
> > ---
> >  ABI_VERSION                   |  2 +-
> >  config/meson.build            | 16 +++++++++++++---
> >  drivers/meson.build           |  4 ++--
> >  examples/ethtool/lib/Makefile |  2 +-
> >  lib/meson.build               |  4 ++--
> >  mk/rte.lib.mk                 | 13 ++++++++-----
> >  6 files changed, 27 insertions(+), 14 deletions(-)
> > 
> > diff --git a/ABI_VERSION b/ABI_VERSION
> > index 2e73f8d2a..fcc01369a 100644
> > --- a/ABI_VERSION
> > +++ b/ABI_VERSION
> > @@ -1 +1 @@
> > -20.1
> > +20.0.1
> > diff --git a/config/meson.build b/config/meson.build
> > index 364a8d739..01911ecf9 100644
> > --- a/config/meson.build
> > +++ b/config/meson.build
> > @@ -20,9 +20,19 @@ pver = meson.project_version().split('.')
> >  major_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
> >  abi_version = run_command(find_program('cat', 'more'),
> >  	abi_version_file).stdout().strip()
> > -# experimental libraries are versioned as 0.majorminor versions, e.g. 0.201
> > -ever = abi_version.split('.')
> > -experimental_abi_version = '0.@0@@1@'.format(ever.get(0), ever.get(1))
> > +
> > +# Regular libraries have the abi_version as the filename extension
> > +# and have the soname be all but the final part of the abi_version.
> > +# Experimental libraries have soname with '0.major'
> > +# and the filename suffix as 0.majorminor versions,
> > +# e.g. v20.1 => librte_stable.so.20.1, librte_experimental.so.0.201
> > +#    sonames => librte_stable.so.20, librte_experimental.so.0.20
> > +# e.g. v20.0.1 => librte_stable.so.20.0.1, librte_experimental.so.0.2001
> > +#      sonames => librte_stable.so.20.0, librte_experimental.so.0.200
> > +abi_va = abi_version.split('.')
> > +stable_so_version = abi_va.length() == 2 ? abi_va[0] : abi_va[0] + '.' + abi_va[1]
> > +experimental_abi_version = '0.' + ''.join(abi_va)
> > +experimental_so_version = '0.' + ''.join(stable_so_version.split('.'))
> >  
> >  # extract all version information into the build configuration
> >  dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int())
> > diff --git a/drivers/meson.build b/drivers/meson.build
> > index 72eec4608..4b17662b7 100644
> > --- a/drivers/meson.build
> > +++ b/drivers/meson.build
> > @@ -132,10 +132,10 @@ foreach class:dpdk_driver_classes
> >  
> >  			if is_experimental != 0
> >  				lib_version = experimental_abi_version
> > -				so_version = experimental_abi_version
> > +				so_version = experimental_so_version
> >  			else
> >  				lib_version = abi_version
> > -				so_version = abi_version
> > +				so_version = stable_so_version
> >  			endif
> >  
> >  			# now build the static driver
> > diff --git a/examples/ethtool/lib/Makefile b/examples/ethtool/lib/Makefile
> > index 9da7dc3ba..649474127 100644
> > --- a/examples/ethtool/lib/Makefile
> > +++ b/examples/ethtool/lib/Makefile
> > @@ -18,7 +18,7 @@ endif
> >  # library name
> >  LIB = librte_ethtool.a
> >  
> > -LIBABIVER := 1
> > +LIBABIVER := 0.1
> >  
> >  # all source are stored in SRC-Y
> >  SRCS-y := rte_ethtool.c
> > diff --git a/lib/meson.build b/lib/meson.build
> > index 6ceb5e756..0af3efab2 100644
> > --- a/lib/meson.build
> > +++ b/lib/meson.build
> > @@ -113,10 +113,10 @@ foreach l:libraries
> >  
> >  			if is_experimental != 0
> >  				lib_version = experimental_abi_version
> > -				so_version = experimental_abi_version
> > +				so_version = experimental_so_version
> >  			else
> >  				lib_version = abi_version
> > -				so_version = abi_version
> > +				so_version = stable_so_version
> >  			endif
> >  
> >  			# first build static lib
> > diff --git a/mk/rte.lib.mk b/mk/rte.lib.mk
> > index 655a1b143..b1a8372cc 100644
> > --- a/mk/rte.lib.mk
> > +++ b/mk/rte.lib.mk
> > @@ -11,14 +11,16 @@ EXTLIB_BUILD ?= n
> >  # VPATH contains at least SRCDIR
> >  VPATH += $(SRCDIR)
> >  
> > -ifneq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
> > -LIBABIVER := $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
> > -else ifeq ($(LIBABIVER),)
> > +LIBABIVER ?= $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
> > +SOVER := $(basename $(LIBABIVER))
> > +ifeq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
> >  # EXPERIMENTAL ABI is versioned as 0.major+minor, e.g. 0.201 for 20.1 ABI
> > -LIBABIVER := 0.$(shell cat $(RTE_SRCDIR)/ABI_VERSION | tr -d '.')
> > +LIBABIVER := 0.$(shell echo $(LIBABIVER) | tr -d '.')
> > +SOVER := 0.$(shell echo $(SOVER) | tr -d '.')
> >  endif
> >  
> >  ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
> > +SONAME := $(patsubst %.a,%.so.$(SOVER),$(LIB))
> >  LIB := $(patsubst %.a,%.so.$(LIBABIVER),$(LIB))
> >  ifeq ($(EXTLIB_BUILD),n)
> >  CPU_LDFLAGS += --version-script=$(SRCDIR)/$(EXPORT_MAP)
> > @@ -74,7 +76,7 @@ NO_UNDEFINED := -z defs
> >  endif
> >  
> >  O_TO_S = $(LD) -L$(RTE_SDK_BIN)/lib $(_CPU_LDFLAGS) $(EXTRA_LDFLAGS) \
> > -	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(LIB) -o $(LIB)
> > +	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(SONAME) -o $(LIB)
> >  O_TO_S_STR = $(subst ','\'',$(O_TO_S)) #'# fix syntax highlight
> >  O_TO_S_DISP = $(if $(V),"$(O_TO_S_STR)","  LD $(@)")
> >  O_TO_S_DO = @set -e; \
> > @@ -133,6 +135,7 @@ $(RTE_OUTPUT)/lib/$(LIB): $(LIB)
> >  	$(Q)cp -f $(LIB) $(RTE_OUTPUT)/lib
> >  ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
> >  	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so/')
> > +	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so.$(SOVER)/')
> >  endif
> >  
> >  #
> > 
> 
> My input is still the same, I think a respin to fix v19.11 is preferable.
> However this patch does fix the issue.
> 
> V19.11
> [root@silpixa00396680 build]# readelf -d ./lib/librte_eal.so.20.0 | grep SONAME
> 11: 0x000000000000000e (SONAME)             Library soname: [librte_eal.so.20.0]
> 
> HEAD
> [root@silpixa00396680 build]# readelf -d ./lib/librte_eal.so.20.1 | grep SONAME
> 11: 0x000000000000000e (SONAME)             Library soname: [librte_eal.so.20.1]
> 

Just FYI, a better test than this should be to check ABI version 21.0,
which will be used for 20.11. Version 20.1 is not going to be used in a
production release if we take this fix.

/Bruce
Ferruh Yigit Dec. 12, 2019, 2:45 p.m. UTC | #3 
On 12/12/2019 11:58 AM, Bruce Richardson wrote:
> The soname for each stable ABI version should be just the ABI version major
> number without the minor number. Unfortunately both major and minor were
> used causing version 20.1 to be incompatible with 20.0.
> 
> This patch fixes the issue by switching from 2-part to 3-part ABI version
> numbers so that we can keep 20.0 as soname and using the final digits to
> identify the 20.x releases which are ABI compatible. This requires changes
> to both make and meson builds to handle the three-digit version and shrink
> it to 2-digit for soname.
> 
> The final fix needed in this patch is to adjust the library version number
> for the ethtool example library, which needs to be upped to 2-digits, as
> external libraries using the DPDK build system also use the logic in this
> file.
> 
> Fixes: cba806e07d6f ("build: change ABI versioning to global")
> 
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>

Tested-by: Ferruh Yigit <ferruh.yigit@intel.com>
Ray Kinsella Dec. 12, 2019, 3:25 p.m. UTC | #4 
On 12/12/2019 13:02, Bruce Richardson wrote:
> On Thu, Dec 12, 2019 at 12:30:19PM +0000, Ray Kinsella wrote:
>>
>>
>> On 12/12/2019 11:58, Bruce Richardson wrote:
>>> The soname for each stable ABI version should be just the ABI version major
>>> number without the minor number. Unfortunately both major and minor were
>>> used causing version 20.1 to be incompatible with 20.0.
>>>
>>> This patch fixes the issue by switching from 2-part to 3-part ABI version
>>> numbers so that we can keep 20.0 as soname and using the final digits to
>>> identify the 20.x releases which are ABI compatible. This requires changes
>>> to both make and meson builds to handle the three-digit version and shrink
>>> it to 2-digit for soname.
>>>
>>> The final fix needed in this patch is to adjust the library version number
>>> for the ethtool example library, which needs to be upped to 2-digits, as
>>> external libraries using the DPDK build system also use the logic in this
>>> file.
>>>
>>> Fixes: cba806e07d6f ("build: change ABI versioning to global")
>>>
>>> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
>>> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
>>> ---
>>>
>>> V3:
>>> * fixed issues with building ethtool example app.
>>> V2:
>>> * adjusted the meson version to work correctly with both 2-part and
>>>   3-part ABI versions, so it will work correctly even with no changes
>>>   for a 21.x ABI version number
>>> * adjusted the versions of the experimental libs so that they are
>>>   consistent between meson and make, and also consistent with v19.11
>>>
>>> ---
>>>  ABI_VERSION                   |  2 +-
>>>  config/meson.build            | 16 +++++++++++++---
>>>  drivers/meson.build           |  4 ++--
>>>  examples/ethtool/lib/Makefile |  2 +-
>>>  lib/meson.build               |  4 ++--
>>>  mk/rte.lib.mk                 | 13 ++++++++-----
>>>  6 files changed, 27 insertions(+), 14 deletions(-)
>>>
>>> diff --git a/ABI_VERSION b/ABI_VERSION
>>> index 2e73f8d2a..fcc01369a 100644
>>> --- a/ABI_VERSION
>>> +++ b/ABI_VERSION
>>> @@ -1 +1 @@
>>> -20.1
>>> +20.0.1
>>> diff --git a/config/meson.build b/config/meson.build
>>> index 364a8d739..01911ecf9 100644
>>> --- a/config/meson.build
>>> +++ b/config/meson.build
>>> @@ -20,9 +20,19 @@ pver = meson.project_version().split('.')
>>>  major_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
>>>  abi_version = run_command(find_program('cat', 'more'),
>>>  	abi_version_file).stdout().strip()
>>> -# experimental libraries are versioned as 0.majorminor versions, e.g. 0.201
>>> -ever = abi_version.split('.')
>>> -experimental_abi_version = '0.@0@@1@'.format(ever.get(0), ever.get(1))
>>> +
>>> +# Regular libraries have the abi_version as the filename extension
>>> +# and have the soname be all but the final part of the abi_version.
>>> +# Experimental libraries have soname with '0.major'
>>> +# and the filename suffix as 0.majorminor versions,
>>> +# e.g. v20.1 => librte_stable.so.20.1, librte_experimental.so.0.201
>>> +#    sonames => librte_stable.so.20, librte_experimental.so.0.20
>>> +# e.g. v20.0.1 => librte_stable.so.20.0.1, librte_experimental.so.0.2001
>>> +#      sonames => librte_stable.so.20.0, librte_experimental.so.0.200
>>> +abi_va = abi_version.split('.')
>>> +stable_so_version = abi_va.length() == 2 ? abi_va[0] : abi_va[0] + '.' + abi_va[1]
>>> +experimental_abi_version = '0.' + ''.join(abi_va)
>>> +experimental_so_version = '0.' + ''.join(stable_so_version.split('.'))
>>>  
>>>  # extract all version information into the build configuration
>>>  dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int())
>>> diff --git a/drivers/meson.build b/drivers/meson.build
>>> index 72eec4608..4b17662b7 100644
>>> --- a/drivers/meson.build
>>> +++ b/drivers/meson.build
>>> @@ -132,10 +132,10 @@ foreach class:dpdk_driver_classes
>>>  
>>>  			if is_experimental != 0
>>>  				lib_version = experimental_abi_version
>>> -				so_version = experimental_abi_version
>>> +				so_version = experimental_so_version
>>>  			else
>>>  				lib_version = abi_version
>>> -				so_version = abi_version
>>> +				so_version = stable_so_version
>>>  			endif
>>>  
>>>  			# now build the static driver
>>> diff --git a/examples/ethtool/lib/Makefile b/examples/ethtool/lib/Makefile
>>> index 9da7dc3ba..649474127 100644
>>> --- a/examples/ethtool/lib/Makefile
>>> +++ b/examples/ethtool/lib/Makefile
>>> @@ -18,7 +18,7 @@ endif
>>>  # library name
>>>  LIB = librte_ethtool.a
>>>  
>>> -LIBABIVER := 1
>>> +LIBABIVER := 0.1
>>>  
>>>  # all source are stored in SRC-Y
>>>  SRCS-y := rte_ethtool.c
>>> diff --git a/lib/meson.build b/lib/meson.build
>>> index 6ceb5e756..0af3efab2 100644
>>> --- a/lib/meson.build
>>> +++ b/lib/meson.build
>>> @@ -113,10 +113,10 @@ foreach l:libraries
>>>  
>>>  			if is_experimental != 0
>>>  				lib_version = experimental_abi_version
>>> -				so_version = experimental_abi_version
>>> +				so_version = experimental_so_version
>>>  			else
>>>  				lib_version = abi_version
>>> -				so_version = abi_version
>>> +				so_version = stable_so_version
>>>  			endif
>>>  
>>>  			# first build static lib
>>> diff --git a/mk/rte.lib.mk b/mk/rte.lib.mk
>>> index 655a1b143..b1a8372cc 100644
>>> --- a/mk/rte.lib.mk
>>> +++ b/mk/rte.lib.mk
>>> @@ -11,14 +11,16 @@ EXTLIB_BUILD ?= n
>>>  # VPATH contains at least SRCDIR
>>>  VPATH += $(SRCDIR)
>>>  
>>> -ifneq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
>>> -LIBABIVER := $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
>>> -else ifeq ($(LIBABIVER),)
>>> +LIBABIVER ?= $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
>>> +SOVER := $(basename $(LIBABIVER))
>>> +ifeq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
>>>  # EXPERIMENTAL ABI is versioned as 0.major+minor, e.g. 0.201 for 20.1 ABI
>>> -LIBABIVER := 0.$(shell cat $(RTE_SRCDIR)/ABI_VERSION | tr -d '.')
>>> +LIBABIVER := 0.$(shell echo $(LIBABIVER) | tr -d '.')
>>> +SOVER := 0.$(shell echo $(SOVER) | tr -d '.')
>>>  endif
>>>  
>>>  ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
>>> +SONAME := $(patsubst %.a,%.so.$(SOVER),$(LIB))
>>>  LIB := $(patsubst %.a,%.so.$(LIBABIVER),$(LIB))
>>>  ifeq ($(EXTLIB_BUILD),n)
>>>  CPU_LDFLAGS += --version-script=$(SRCDIR)/$(EXPORT_MAP)
>>> @@ -74,7 +76,7 @@ NO_UNDEFINED := -z defs
>>>  endif
>>>  
>>>  O_TO_S = $(LD) -L$(RTE_SDK_BIN)/lib $(_CPU_LDFLAGS) $(EXTRA_LDFLAGS) \
>>> -	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(LIB) -o $(LIB)
>>> +	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(SONAME) -o $(LIB)
>>>  O_TO_S_STR = $(subst ','\'',$(O_TO_S)) #'# fix syntax highlight
>>>  O_TO_S_DISP = $(if $(V),"$(O_TO_S_STR)","  LD $(@)")
>>>  O_TO_S_DO = @set -e; \
>>> @@ -133,6 +135,7 @@ $(RTE_OUTPUT)/lib/$(LIB): $(LIB)
>>>  	$(Q)cp -f $(LIB) $(RTE_OUTPUT)/lib
>>>  ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
>>>  	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so/')
>>> +	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so.$(SOVER)/')
>>>  endif
>>>  
>>>  #
>>>
>>
>> My input is still the same, I think a respin to fix v19.11 is preferable.
>> However this patch does fix the issue.
>>
>> V19.11
>> [root@silpixa00396680 build]# readelf -d ./lib/librte_eal.so.20.0 | grep SONAME
>> 11: 0x000000000000000e (SONAME)             Library soname: [librte_eal.so.20.0]
>>
>> HEAD
>> [root@silpixa00396680 build]# readelf -d ./lib/librte_eal.so.20.1 | grep SONAME
>> 11: 0x000000000000000e (SONAME)             Library soname: [librte_eal.so.20.1]
>>
> 
> Just FYI, a better test than this should be to check ABI version 21.0,
> which will be used for 20.11. 
> Version 20.1 is not going to be used in a
> production release if we take this fix.

I don't follow this point?

> 
> /Bruce
> 

Building DPDK v19.11 TestPMD, and tried to run it against the HEAD shared Libs.

[root@silpixa00396680 build.head]# ldd app/dpdk-testpmd.v19.11
        linux-vdso.so.1 (0x00007ffcf828c000)
        libm.so.6 => /lib64/libm.so.6 (0x00007f9aad937000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007f9aad930000)
        libnuma.so.1 => /lib64/libnuma.so.1 (0x00007f9aad922000)
        librte_ethdev.so.20.0 => not found
        librte_eal.so.20.0 => not found
        librte_kvargs.so.20.0 => not found
        librte_net.so.20.0 => not found
        librte_mbuf.so.20.0 => not found
        librte_mempool.so.20.0 => not found
        librte_ring.so.20.0 => not found
        librte_meter.so.20.0 => not found


After applying the fix ...

[root@silpixa00396680 build.head]# ldd app/dpdk-testpmd.v19.11
        linux-vdso.so.1 (0x00007ffc0e5c0000)
        libm.so.6 => /lib64/libm.so.6 (0x00007f656ef9f000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007f656ef98000)
        libnuma.so.1 => /lib64/libnuma.so.1 (0x00007f656ef8a000)
        librte_ethdev.so.20.0 => /root/src/dpdk/build.head/app/../lib/librte_ethdev.so.20.0 (0x00007f656eee6000)
        librte_eal.so.20.0 => /root/src/dpdk/build.head/app/../lib/librte_eal.so.20.0 (0x00007f656ee02000)
        librte_kvargs.so.20.0 => /root/src/dpdk/build.head/app/../lib/librte_kvargs.so.20.0 (0x00007f656edfd000)
        librte_net.so.20.0 => /root/src/dpdk/build.head/app/../lib/librte_net.so.20.0 (0x00007f656edf4000)
        librte_mbuf.so.20.0 => /root/src/dpdk/build.head/app/../lib/librte_mbuf.so.20.0 (0x00007f656ede8000)
        librte_mempool.so.20.0 => /root/src/dpdk/build.head/app/../lib/librte_mempool.so.20.0 (0x00007f656eddf000)
        librte_ring.so.20.0 => /root/src/dpdk/build.head/app/../lib/librte_ring.so.20.0 (0x00007f656edda000)

I updated ABI_VERSION to 20.0.2 etc, and all was still OK.

Ray K
Bruce Richardson Dec. 12, 2019, 3:34 p.m. UTC | #5 
On Thu, Dec 12, 2019 at 03:25:12PM +0000, Ray Kinsella wrote:
> 
> 
> On 12/12/2019 13:02, Bruce Richardson wrote:
> > On Thu, Dec 12, 2019 at 12:30:19PM +0000, Ray Kinsella wrote:
> >>
> >>
> >> On 12/12/2019 11:58, Bruce Richardson wrote:
> >>> The soname for each stable ABI version should be just the ABI version major
> >>> number without the minor number. Unfortunately both major and minor were
> >>> used causing version 20.1 to be incompatible with 20.0.
> >>>
> >>> This patch fixes the issue by switching from 2-part to 3-part ABI version
> >>> numbers so that we can keep 20.0 as soname and using the final digits to
> >>> identify the 20.x releases which are ABI compatible. This requires changes
> >>> to both make and meson builds to handle the three-digit version and shrink
> >>> it to 2-digit for soname.
> >>>
> >>> The final fix needed in this patch is to adjust the library version number
> >>> for the ethtool example library, which needs to be upped to 2-digits, as
> >>> external libraries using the DPDK build system also use the logic in this
> >>> file.
> >>>
> >>> Fixes: cba806e07d6f ("build: change ABI versioning to global")
> >>>
> >>> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> >>> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> >>> ---
> >>>
> >>> V3:
> >>> * fixed issues with building ethtool example app.
> >>> V2:
> >>> * adjusted the meson version to work correctly with both 2-part and
> >>>   3-part ABI versions, so it will work correctly even with no changes
> >>>   for a 21.x ABI version number
> >>> * adjusted the versions of the experimental libs so that they are
> >>>   consistent between meson and make, and also consistent with v19.11
> >>>
> >>> ---
> >>>  ABI_VERSION                   |  2 +-
> >>>  config/meson.build            | 16 +++++++++++++---
> >>>  drivers/meson.build           |  4 ++--
> >>>  examples/ethtool/lib/Makefile |  2 +-
> >>>  lib/meson.build               |  4 ++--
> >>>  mk/rte.lib.mk                 | 13 ++++++++-----
> >>>  6 files changed, 27 insertions(+), 14 deletions(-)
> >>>
> >>> diff --git a/ABI_VERSION b/ABI_VERSION
> >>> index 2e73f8d2a..fcc01369a 100644
> >>> --- a/ABI_VERSION
> >>> +++ b/ABI_VERSION
> >>> @@ -1 +1 @@
> >>> -20.1
> >>> +20.0.1
> >>> diff --git a/config/meson.build b/config/meson.build
> >>> index 364a8d739..01911ecf9 100644
> >>> --- a/config/meson.build
> >>> +++ b/config/meson.build
> >>> @@ -20,9 +20,19 @@ pver = meson.project_version().split('.')
> >>>  major_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
> >>>  abi_version = run_command(find_program('cat', 'more'),
> >>>  	abi_version_file).stdout().strip()
> >>> -# experimental libraries are versioned as 0.majorminor versions, e.g. 0.201
> >>> -ever = abi_version.split('.')
> >>> -experimental_abi_version = '0.@0@@1@'.format(ever.get(0), ever.get(1))
> >>> +
> >>> +# Regular libraries have the abi_version as the filename extension
> >>> +# and have the soname be all but the final part of the abi_version.
> >>> +# Experimental libraries have soname with '0.major'
> >>> +# and the filename suffix as 0.majorminor versions,
> >>> +# e.g. v20.1 => librte_stable.so.20.1, librte_experimental.so.0.201
> >>> +#    sonames => librte_stable.so.20, librte_experimental.so.0.20
> >>> +# e.g. v20.0.1 => librte_stable.so.20.0.1, librte_experimental.so.0.2001
> >>> +#      sonames => librte_stable.so.20.0, librte_experimental.so.0.200
> >>> +abi_va = abi_version.split('.')
> >>> +stable_so_version = abi_va.length() == 2 ? abi_va[0] : abi_va[0] + '.' + abi_va[1]
> >>> +experimental_abi_version = '0.' + ''.join(abi_va)
> >>> +experimental_so_version = '0.' + ''.join(stable_so_version.split('.'))
> >>>  
> >>>  # extract all version information into the build configuration
> >>>  dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int())
> >>> diff --git a/drivers/meson.build b/drivers/meson.build
> >>> index 72eec4608..4b17662b7 100644
> >>> --- a/drivers/meson.build
> >>> +++ b/drivers/meson.build
> >>> @@ -132,10 +132,10 @@ foreach class:dpdk_driver_classes
> >>>  
> >>>  			if is_experimental != 0
> >>>  				lib_version = experimental_abi_version
> >>> -				so_version = experimental_abi_version
> >>> +				so_version = experimental_so_version
> >>>  			else
> >>>  				lib_version = abi_version
> >>> -				so_version = abi_version
> >>> +				so_version = stable_so_version
> >>>  			endif
> >>>  
> >>>  			# now build the static driver
> >>> diff --git a/examples/ethtool/lib/Makefile b/examples/ethtool/lib/Makefile
> >>> index 9da7dc3ba..649474127 100644
> >>> --- a/examples/ethtool/lib/Makefile
> >>> +++ b/examples/ethtool/lib/Makefile
> >>> @@ -18,7 +18,7 @@ endif
> >>>  # library name
> >>>  LIB = librte_ethtool.a
> >>>  
> >>> -LIBABIVER := 1
> >>> +LIBABIVER := 0.1
> >>>  
> >>>  # all source are stored in SRC-Y
> >>>  SRCS-y := rte_ethtool.c
> >>> diff --git a/lib/meson.build b/lib/meson.build
> >>> index 6ceb5e756..0af3efab2 100644
> >>> --- a/lib/meson.build
> >>> +++ b/lib/meson.build
> >>> @@ -113,10 +113,10 @@ foreach l:libraries
> >>>  
> >>>  			if is_experimental != 0
> >>>  				lib_version = experimental_abi_version
> >>> -				so_version = experimental_abi_version
> >>> +				so_version = experimental_so_version
> >>>  			else
> >>>  				lib_version = abi_version
> >>> -				so_version = abi_version
> >>> +				so_version = stable_so_version
> >>>  			endif
> >>>  
> >>>  			# first build static lib
> >>> diff --git a/mk/rte.lib.mk b/mk/rte.lib.mk
> >>> index 655a1b143..b1a8372cc 100644
> >>> --- a/mk/rte.lib.mk
> >>> +++ b/mk/rte.lib.mk
> >>> @@ -11,14 +11,16 @@ EXTLIB_BUILD ?= n
> >>>  # VPATH contains at least SRCDIR
> >>>  VPATH += $(SRCDIR)
> >>>  
> >>> -ifneq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
> >>> -LIBABIVER := $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
> >>> -else ifeq ($(LIBABIVER),)
> >>> +LIBABIVER ?= $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
> >>> +SOVER := $(basename $(LIBABIVER))
> >>> +ifeq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
> >>>  # EXPERIMENTAL ABI is versioned as 0.major+minor, e.g. 0.201 for 20.1 ABI
> >>> -LIBABIVER := 0.$(shell cat $(RTE_SRCDIR)/ABI_VERSION | tr -d '.')
> >>> +LIBABIVER := 0.$(shell echo $(LIBABIVER) | tr -d '.')
> >>> +SOVER := 0.$(shell echo $(SOVER) | tr -d '.')
> >>>  endif
> >>>  
> >>>  ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
> >>> +SONAME := $(patsubst %.a,%.so.$(SOVER),$(LIB))
> >>>  LIB := $(patsubst %.a,%.so.$(LIBABIVER),$(LIB))
> >>>  ifeq ($(EXTLIB_BUILD),n)
> >>>  CPU_LDFLAGS += --version-script=$(SRCDIR)/$(EXPORT_MAP)
> >>> @@ -74,7 +76,7 @@ NO_UNDEFINED := -z defs
> >>>  endif
> >>>  
> >>>  O_TO_S = $(LD) -L$(RTE_SDK_BIN)/lib $(_CPU_LDFLAGS) $(EXTRA_LDFLAGS) \
> >>> -	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(LIB) -o $(LIB)
> >>> +	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(SONAME) -o $(LIB)
> >>>  O_TO_S_STR = $(subst ','\'',$(O_TO_S)) #'# fix syntax highlight
> >>>  O_TO_S_DISP = $(if $(V),"$(O_TO_S_STR)","  LD $(@)")
> >>>  O_TO_S_DO = @set -e; \
> >>> @@ -133,6 +135,7 @@ $(RTE_OUTPUT)/lib/$(LIB): $(LIB)
> >>>  	$(Q)cp -f $(LIB) $(RTE_OUTPUT)/lib
> >>>  ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
> >>>  	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so/')
> >>> +	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so.$(SOVER)/')
> >>>  endif
> >>>  
> >>>  #
> >>>
> >>
> >> My input is still the same, I think a respin to fix v19.11 is preferable.
> >> However this patch does fix the issue.
> >>
> >> V19.11
> >> [root@silpixa00396680 build]# readelf -d ./lib/librte_eal.so.20.0 | grep SONAME
> >> 11: 0x000000000000000e (SONAME)             Library soname: [librte_eal.so.20.0]
> >>
> >> HEAD
> >> [root@silpixa00396680 build]# readelf -d ./lib/librte_eal.so.20.1 | grep SONAME
> >> 11: 0x000000000000000e (SONAME)             Library soname: [librte_eal.so.20.1]
> >>
> > 
> > Just FYI, a better test than this should be to check ABI version 21.0,
> > which will be used for 20.11. 
> > Version 20.1 is not going to be used in a
> > production release if we take this fix.
> 
> I don't follow this point?
> 
Reading back, I can see why, I completely missed what you were saying. My
bad, sorry!
Ray Kinsella Dec. 12, 2019, 4:34 p.m. UTC | #6 
On 12/12/2019 11:58, Bruce Richardson wrote:
> The soname for each stable ABI version should be just the ABI version major
> number without the minor number. Unfortunately both major and minor were
> used causing version 20.1 to be incompatible with 20.0.
> 
> This patch fixes the issue by switching from 2-part to 3-part ABI version
> numbers so that we can keep 20.0 as soname and using the final digits to
> identify the 20.x releases which are ABI compatible. This requires changes
> to both make and meson builds to handle the three-digit version and shrink
> it to 2-digit for soname.
> 
> The final fix needed in this patch is to adjust the library version number
> for the ethtool example library, which needs to be upped to 2-digits, as
> external libraries using the DPDK build system also use the logic in this
> file.
> 
> Fixes: cba806e07d6f ("build: change ABI versioning to global")
> 
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> ---
> 
> V3:
> * fixed issues with building ethtool example app.
> V2:
> * adjusted the meson version to work correctly with both 2-part and
>   3-part ABI versions, so it will work correctly even with no changes
>   for a 21.x ABI version number
> * adjusted the versions of the experimental libs so that they are
>   consistent between meson and make, and also consistent with v19.11
> 
> ---
>  ABI_VERSION                   |  2 +-
>  config/meson.build            | 16 +++++++++++++---
>  drivers/meson.build           |  4 ++--
>  examples/ethtool/lib/Makefile |  2 +-
>  lib/meson.build               |  4 ++--
>  mk/rte.lib.mk                 | 13 ++++++++-----
>  6 files changed, 27 insertions(+), 14 deletions(-)
> 
> diff --git a/ABI_VERSION b/ABI_VERSION
> index 2e73f8d2a..fcc01369a 100644
> --- a/ABI_VERSION
> +++ b/ABI_VERSION
> @@ -1 +1 @@
> -20.1
> +20.0.1
> diff --git a/config/meson.build b/config/meson.build
> index 364a8d739..01911ecf9 100644
> --- a/config/meson.build
> +++ b/config/meson.build
> @@ -20,9 +20,19 @@ pver = meson.project_version().split('.')
>  major_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
>  abi_version = run_command(find_program('cat', 'more'),
>  	abi_version_file).stdout().strip()
> -# experimental libraries are versioned as 0.majorminor versions, e.g. 0.201
> -ever = abi_version.split('.')
> -experimental_abi_version = '0.@0@@1@'.format(ever.get(0), ever.get(1))
> +
> +# Regular libraries have the abi_version as the filename extension
> +# and have the soname be all but the final part of the abi_version.
> +# Experimental libraries have soname with '0.major'
> +# and the filename suffix as 0.majorminor versions,
> +# e.g. v20.1 => librte_stable.so.20.1, librte_experimental.so.0.201
> +#    sonames => librte_stable.so.20, librte_experimental.so.0.20
> +# e.g. v20.0.1 => librte_stable.so.20.0.1, librte_experimental.so.0.2001
> +#      sonames => librte_stable.so.20.0, librte_experimental.so.0.200
> +abi_va = abi_version.split('.')
> +stable_so_version = abi_va.length() == 2 ? abi_va[0] : abi_va[0] + '.' + abi_va[1]
> +experimental_abi_version = '0.' + ''.join(abi_va)
> +experimental_so_version = '0.' + ''.join(stable_so_version.split('.'))
>  
>  # extract all version information into the build configuration
>  dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int())
> diff --git a/drivers/meson.build b/drivers/meson.build
> index 72eec4608..4b17662b7 100644
> --- a/drivers/meson.build
> +++ b/drivers/meson.build
> @@ -132,10 +132,10 @@ foreach class:dpdk_driver_classes
>  
>  			if is_experimental != 0
>  				lib_version = experimental_abi_version
> -				so_version = experimental_abi_version
> +				so_version = experimental_so_version
>  			else
>  				lib_version = abi_version
> -				so_version = abi_version
> +				so_version = stable_so_version
>  			endif
>  
>  			# now build the static driver
> diff --git a/examples/ethtool/lib/Makefile b/examples/ethtool/lib/Makefile
> index 9da7dc3ba..649474127 100644
> --- a/examples/ethtool/lib/Makefile
> +++ b/examples/ethtool/lib/Makefile
> @@ -18,7 +18,7 @@ endif
>  # library name
>  LIB = librte_ethtool.a
>  
> -LIBABIVER := 1
> +LIBABIVER := 0.1
>  
>  # all source are stored in SRC-Y
>  SRCS-y := rte_ethtool.c
> diff --git a/lib/meson.build b/lib/meson.build
> index 6ceb5e756..0af3efab2 100644
> --- a/lib/meson.build
> +++ b/lib/meson.build
> @@ -113,10 +113,10 @@ foreach l:libraries
>  
>  			if is_experimental != 0
>  				lib_version = experimental_abi_version
> -				so_version = experimental_abi_version
> +				so_version = experimental_so_version
>  			else
>  				lib_version = abi_version
> -				so_version = abi_version
> +				so_version = stable_so_version
>  			endif
>  
>  			# first build static lib
> diff --git a/mk/rte.lib.mk b/mk/rte.lib.mk
> index 655a1b143..b1a8372cc 100644
> --- a/mk/rte.lib.mk
> +++ b/mk/rte.lib.mk
> @@ -11,14 +11,16 @@ EXTLIB_BUILD ?= n
>  # VPATH contains at least SRCDIR
>  VPATH += $(SRCDIR)
>  
> -ifneq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
> -LIBABIVER := $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
> -else ifeq ($(LIBABIVER),)
> +LIBABIVER ?= $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
> +SOVER := $(basename $(LIBABIVER))
> +ifeq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
>  # EXPERIMENTAL ABI is versioned as 0.major+minor, e.g. 0.201 for 20.1 ABI
> -LIBABIVER := 0.$(shell cat $(RTE_SRCDIR)/ABI_VERSION | tr -d '.')
> +LIBABIVER := 0.$(shell echo $(LIBABIVER) | tr -d '.')
> +SOVER := 0.$(shell echo $(SOVER) | tr -d '.')
>  endif
>  
>  ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
> +SONAME := $(patsubst %.a,%.so.$(SOVER),$(LIB))
>  LIB := $(patsubst %.a,%.so.$(LIBABIVER),$(LIB))
>  ifeq ($(EXTLIB_BUILD),n)
>  CPU_LDFLAGS += --version-script=$(SRCDIR)/$(EXPORT_MAP)
> @@ -74,7 +76,7 @@ NO_UNDEFINED := -z defs
>  endif
>  
>  O_TO_S = $(LD) -L$(RTE_SDK_BIN)/lib $(_CPU_LDFLAGS) $(EXTRA_LDFLAGS) \
> -	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(LIB) -o $(LIB)
> +	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(SONAME) -o $(LIB)
>  O_TO_S_STR = $(subst ','\'',$(O_TO_S)) #'# fix syntax highlight
>  O_TO_S_DISP = $(if $(V),"$(O_TO_S_STR)","  LD $(@)")
>  O_TO_S_DO = @set -e; \
> @@ -133,6 +135,7 @@ $(RTE_OUTPUT)/lib/$(LIB): $(LIB)
>  	$(Q)cp -f $(LIB) $(RTE_OUTPUT)/lib
>  ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
>  	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so/')
> +	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so.$(SOVER)/')
>  endif
>  
>  #
> 
Tested-by: Ray Kinsella <mdr@ashroe.eu>
Neil Horman Dec. 13, 2019, 11:38 a.m. UTC | #7 
On Thu, Dec 12, 2019 at 11:58:26AM +0000, Bruce Richardson wrote:
> The soname for each stable ABI version should be just the ABI version major
> number without the minor number. Unfortunately both major and minor were
> used causing version 20.1 to be incompatible with 20.0.
> 
> This patch fixes the issue by switching from 2-part to 3-part ABI version
> numbers so that we can keep 20.0 as soname and using the final digits to
> identify the 20.x releases which are ABI compatible. This requires changes
> to both make and meson builds to handle the three-digit version and shrink
> it to 2-digit for soname.
> 
> The final fix needed in this patch is to adjust the library version number
> for the ethtool example library, which needs to be upped to 2-digits, as
> external libraries using the DPDK build system also use the logic in this
> file.
> 
> Fixes: cba806e07d6f ("build: change ABI versioning to global")
> 
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> ---
> 
> V3:
> * fixed issues with building ethtool example app.
> V2:
> * adjusted the meson version to work correctly with both 2-part and
>   3-part ABI versions, so it will work correctly even with no changes
>   for a 21.x ABI version number
> * adjusted the versions of the experimental libs so that they are
>   consistent between meson and make, and also consistent with v19.11
> 
> ---
>  ABI_VERSION                   |  2 +-
>  config/meson.build            | 16 +++++++++++++---
>  drivers/meson.build           |  4 ++--
>  examples/ethtool/lib/Makefile |  2 +-
>  lib/meson.build               |  4 ++--
>  mk/rte.lib.mk                 | 13 ++++++++-----
>  6 files changed, 27 insertions(+), 14 deletions(-)
> 
> diff --git a/ABI_VERSION b/ABI_VERSION
> index 2e73f8d2a..fcc01369a 100644
> --- a/ABI_VERSION
> +++ b/ABI_VERSION
> @@ -1 +1 @@
> -20.1
> +20.0.1
> diff --git a/config/meson.build b/config/meson.build
> index 364a8d739..01911ecf9 100644
> --- a/config/meson.build
> +++ b/config/meson.build
> @@ -20,9 +20,19 @@ pver = meson.project_version().split('.')
>  major_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
>  abi_version = run_command(find_program('cat', 'more'),
>  	abi_version_file).stdout().strip()
> -# experimental libraries are versioned as 0.majorminor versions, e.g. 0.201
> -ever = abi_version.split('.')
> -experimental_abi_version = '0.@0@@1@'.format(ever.get(0), ever.get(1))
> +
> +# Regular libraries have the abi_version as the filename extension
> +# and have the soname be all but the final part of the abi_version.
> +# Experimental libraries have soname with '0.major'
> +# and the filename suffix as 0.majorminor versions,
> +# e.g. v20.1 => librte_stable.so.20.1, librte_experimental.so.0.201
> +#    sonames => librte_stable.so.20, librte_experimental.so.0.20
> +# e.g. v20.0.1 => librte_stable.so.20.0.1, librte_experimental.so.0.2001
> +#      sonames => librte_stable.so.20.0, librte_experimental.so.0.200
> +abi_va = abi_version.split('.')
> +stable_so_version = abi_va.length() == 2 ? abi_va[0] : abi_va[0] + '.' + abi_va[1]
> +experimental_abi_version = '0.' + ''.join(abi_va)
> +experimental_so_version = '0.' + ''.join(stable_so_version.split('.'))
>  
>  # extract all version information into the build configuration
>  dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int())
> diff --git a/drivers/meson.build b/drivers/meson.build
> index 72eec4608..4b17662b7 100644
> --- a/drivers/meson.build
> +++ b/drivers/meson.build
> @@ -132,10 +132,10 @@ foreach class:dpdk_driver_classes
>  
>  			if is_experimental != 0
>  				lib_version = experimental_abi_version
> -				so_version = experimental_abi_version
> +				so_version = experimental_so_version
>  			else
>  				lib_version = abi_version
> -				so_version = abi_version
> +				so_version = stable_so_version
>  			endif
>  
>  			# now build the static driver
> diff --git a/examples/ethtool/lib/Makefile b/examples/ethtool/lib/Makefile
> index 9da7dc3ba..649474127 100644
> --- a/examples/ethtool/lib/Makefile
> +++ b/examples/ethtool/lib/Makefile
> @@ -18,7 +18,7 @@ endif
>  # library name
>  LIB = librte_ethtool.a
>  
> -LIBABIVER := 1
> +LIBABIVER := 0.1
>  
>  # all source are stored in SRC-Y
>  SRCS-y := rte_ethtool.c
> diff --git a/lib/meson.build b/lib/meson.build
> index 6ceb5e756..0af3efab2 100644
> --- a/lib/meson.build
> +++ b/lib/meson.build
> @@ -113,10 +113,10 @@ foreach l:libraries
>  
>  			if is_experimental != 0
>  				lib_version = experimental_abi_version
> -				so_version = experimental_abi_version
> +				so_version = experimental_so_version
>  			else
>  				lib_version = abi_version
> -				so_version = abi_version
> +				so_version = stable_so_version
>  			endif
>  
>  			# first build static lib
> diff --git a/mk/rte.lib.mk b/mk/rte.lib.mk
> index 655a1b143..b1a8372cc 100644
> --- a/mk/rte.lib.mk
> +++ b/mk/rte.lib.mk
> @@ -11,14 +11,16 @@ EXTLIB_BUILD ?= n
>  # VPATH contains at least SRCDIR
>  VPATH += $(SRCDIR)
>  
> -ifneq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
> -LIBABIVER := $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
> -else ifeq ($(LIBABIVER),)
> +LIBABIVER ?= $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
> +SOVER := $(basename $(LIBABIVER))
> +ifeq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
>  # EXPERIMENTAL ABI is versioned as 0.major+minor, e.g. 0.201 for 20.1 ABI
> -LIBABIVER := 0.$(shell cat $(RTE_SRCDIR)/ABI_VERSION | tr -d '.')
> +LIBABIVER := 0.$(shell echo $(LIBABIVER) | tr -d '.')
> +SOVER := 0.$(shell echo $(SOVER) | tr -d '.')
>  endif
>  
>  ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
> +SONAME := $(patsubst %.a,%.so.$(SOVER),$(LIB))
>  LIB := $(patsubst %.a,%.so.$(LIBABIVER),$(LIB))
>  ifeq ($(EXTLIB_BUILD),n)
>  CPU_LDFLAGS += --version-script=$(SRCDIR)/$(EXPORT_MAP)
> @@ -74,7 +76,7 @@ NO_UNDEFINED := -z defs
>  endif
>  
>  O_TO_S = $(LD) -L$(RTE_SDK_BIN)/lib $(_CPU_LDFLAGS) $(EXTRA_LDFLAGS) \
> -	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(LIB) -o $(LIB)
> +	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(SONAME) -o $(LIB)
>  O_TO_S_STR = $(subst ','\'',$(O_TO_S)) #'# fix syntax highlight
>  O_TO_S_DISP = $(if $(V),"$(O_TO_S_STR)","  LD $(@)")
>  O_TO_S_DO = @set -e; \
> @@ -133,6 +135,7 @@ $(RTE_OUTPUT)/lib/$(LIB): $(LIB)
>  	$(Q)cp -f $(LIB) $(RTE_OUTPUT)/lib
>  ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
>  	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so/')
> +	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so.$(SOVER)/')
>  endif
>  
>  #
> -- 
> 2.23.0
> 
> 
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Kevin Laatz Dec. 16, 2019, 11:21 a.m. UTC | #8 
On 12/12/2019 11:58, Bruce Richardson wrote:
> The soname for each stable ABI version should be just the ABI version major
> number without the minor number. Unfortunately both major and minor were
> used causing version 20.1 to be incompatible with 20.0.
>
> This patch fixes the issue by switching from 2-part to 3-part ABI version
> numbers so that we can keep 20.0 as soname and using the final digits to
> identify the 20.x releases which are ABI compatible. This requires changes
> to both make and meson builds to handle the three-digit version and shrink
> it to 2-digit for soname.
>
> The final fix needed in this patch is to adjust the library version number
> for the ethtool example library, which needs to be upped to 2-digits, as
> external libraries using the DPDK build system also use the logic in this
> file.
>
> Fixes: cba806e07d6f ("build: change ABI versioning to global")
>
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> ---

Patch also tested with new Meson ABI checks (see 
http://patches.dpdk.org/project/dpdk/list/?series=7830)

Tested-by: Kevin Laatz <kevin.laatz@intel.com>
David Marchand Dec. 19, 2019, 12:42 p.m. UTC | #9 
On Thu, Dec 12, 2019 at 12:59 PM Bruce Richardson
<bruce.richardson@intel.com> wrote:
>
> The soname for each stable ABI version should be just the ABI version major
> number without the minor number. Unfortunately both major and minor were
> used causing version 20.1 to be incompatible with 20.0.
>
> This patch fixes the issue by switching from 2-part to 3-part ABI version
> numbers so that we can keep 20.0 as soname and using the final digits to
> identify the 20.x releases which are ABI compatible. This requires changes
> to both make and meson builds to handle the three-digit version and shrink
> it to 2-digit for soname.
>
> The final fix needed in this patch is to adjust the library version number
> for the ethtool example library, which needs to be upped to 2-digits, as
> external libraries using the DPDK build system also use the logic in this
> file.
>
> Fixes: cba806e07d6f ("build: change ABI versioning to global")
>
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>

Tested-by: David Marchand <david.marchand@redhat.com>
Thomas Monjalon Dec. 19, 2019, 3:19 p.m. UTC | #10 
19/12/2019 13:42, David Marchand:
> On Thu, Dec 12, 2019 at 12:59 PM Bruce Richardson
> <bruce.richardson@intel.com> wrote:
> >
> > The soname for each stable ABI version should be just the ABI version major
> > number without the minor number. Unfortunately both major and minor were
> > used causing version 20.1 to be incompatible with 20.0.
> >
> > This patch fixes the issue by switching from 2-part to 3-part ABI version
> > numbers so that we can keep 20.0 as soname and using the final digits to
> > identify the 20.x releases which are ABI compatible. This requires changes
> > to both make and meson builds to handle the three-digit version and shrink
> > it to 2-digit for soname.
> >
> > The final fix needed in this patch is to adjust the library version number
> > for the ethtool example library, which needs to be upped to 2-digits, as
> > external libraries using the DPDK build system also use the logic in this
> > file.
> >
> > Fixes: cba806e07d6f ("build: change ABI versioning to global")
> >
> > Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> > Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>

Acked-by: Neil Horman <nhorman@tuxdriver.com>
Tested-by: Ray Kinsella <mdr@ashroe.eu>
Tested-by: Ferruh Yigit <ferruh.yigit@intel.com>
Tested-by: Kevin Laatz <kevin.laatz@intel.com>

> Tested-by: David Marchand <david.marchand@redhat.com>

Applied, thanks
diff mbox series

Patch

diff --git a/ABI_VERSION b/ABI_VERSION
index 2e73f8d2a..fcc01369a 100644
--- a/ABI_VERSION
+++ b/ABI_VERSION
@@ -1 +1 @@ 
-20.1
+20.0.1
diff --git a/config/meson.build b/config/meson.build
index 364a8d739..01911ecf9 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -20,9 +20,19 @@  pver = meson.project_version().split('.')
 major_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
 abi_version = run_command(find_program('cat', 'more'),
 	abi_version_file).stdout().strip()
-# experimental libraries are versioned as 0.majorminor versions, e.g. 0.201
-ever = abi_version.split('.')
-experimental_abi_version = '0.@0@@1@'.format(ever.get(0), ever.get(1))
+
+# Regular libraries have the abi_version as the filename extension
+# and have the soname be all but the final part of the abi_version.
+# Experimental libraries have soname with '0.major'
+# and the filename suffix as 0.majorminor versions,
+# e.g. v20.1 => librte_stable.so.20.1, librte_experimental.so.0.201
+#    sonames => librte_stable.so.20, librte_experimental.so.0.20
+# e.g. v20.0.1 => librte_stable.so.20.0.1, librte_experimental.so.0.2001
+#      sonames => librte_stable.so.20.0, librte_experimental.so.0.200
+abi_va = abi_version.split('.')
+stable_so_version = abi_va.length() == 2 ? abi_va[0] : abi_va[0] + '.' + abi_va[1]
+experimental_abi_version = '0.' + ''.join(abi_va)
+experimental_so_version = '0.' + ''.join(stable_so_version.split('.'))
 
 # extract all version information into the build configuration
 dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int())
diff --git a/drivers/meson.build b/drivers/meson.build
index 72eec4608..4b17662b7 100644
--- a/drivers/meson.build
+++ b/drivers/meson.build
@@ -132,10 +132,10 @@  foreach class:dpdk_driver_classes
 
 			if is_experimental != 0
 				lib_version = experimental_abi_version
-				so_version = experimental_abi_version
+				so_version = experimental_so_version
 			else
 				lib_version = abi_version
-				so_version = abi_version
+				so_version = stable_so_version
 			endif
 
 			# now build the static driver
diff --git a/examples/ethtool/lib/Makefile b/examples/ethtool/lib/Makefile
index 9da7dc3ba..649474127 100644
--- a/examples/ethtool/lib/Makefile
+++ b/examples/ethtool/lib/Makefile
@@ -18,7 +18,7 @@  endif
 # library name
 LIB = librte_ethtool.a
 
-LIBABIVER := 1
+LIBABIVER := 0.1
 
 # all source are stored in SRC-Y
 SRCS-y := rte_ethtool.c
diff --git a/lib/meson.build b/lib/meson.build
index 6ceb5e756..0af3efab2 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -113,10 +113,10 @@  foreach l:libraries
 
 			if is_experimental != 0
 				lib_version = experimental_abi_version
-				so_version = experimental_abi_version
+				so_version = experimental_so_version
 			else
 				lib_version = abi_version
-				so_version = abi_version
+				so_version = stable_so_version
 			endif
 
 			# first build static lib
diff --git a/mk/rte.lib.mk b/mk/rte.lib.mk
index 655a1b143..b1a8372cc 100644
--- a/mk/rte.lib.mk
+++ b/mk/rte.lib.mk
@@ -11,14 +11,16 @@  EXTLIB_BUILD ?= n
 # VPATH contains at least SRCDIR
 VPATH += $(SRCDIR)
 
-ifneq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
-LIBABIVER := $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
-else ifeq ($(LIBABIVER),)
+LIBABIVER ?= $(shell cat $(RTE_SRCDIR)/ABI_VERSION)
+SOVER := $(basename $(LIBABIVER))
+ifeq ($(shell grep -s "^DPDK_" $(SRCDIR)/$(EXPORT_MAP)),)
 # EXPERIMENTAL ABI is versioned as 0.major+minor, e.g. 0.201 for 20.1 ABI
-LIBABIVER := 0.$(shell cat $(RTE_SRCDIR)/ABI_VERSION | tr -d '.')
+LIBABIVER := 0.$(shell echo $(LIBABIVER) | tr -d '.')
+SOVER := 0.$(shell echo $(SOVER) | tr -d '.')
 endif
 
 ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
+SONAME := $(patsubst %.a,%.so.$(SOVER),$(LIB))
 LIB := $(patsubst %.a,%.so.$(LIBABIVER),$(LIB))
 ifeq ($(EXTLIB_BUILD),n)
 CPU_LDFLAGS += --version-script=$(SRCDIR)/$(EXPORT_MAP)
@@ -74,7 +76,7 @@  NO_UNDEFINED := -z defs
 endif
 
 O_TO_S = $(LD) -L$(RTE_SDK_BIN)/lib $(_CPU_LDFLAGS) $(EXTRA_LDFLAGS) \
-	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(LIB) -o $(LIB)
+	  -shared $(OBJS-y) $(NO_UNDEFINED) $(LDLIBS) -Wl,-soname,$(SONAME) -o $(LIB)
 O_TO_S_STR = $(subst ','\'',$(O_TO_S)) #'# fix syntax highlight
 O_TO_S_DISP = $(if $(V),"$(O_TO_S_STR)","  LD $(@)")
 O_TO_S_DO = @set -e; \
@@ -133,6 +135,7 @@  $(RTE_OUTPUT)/lib/$(LIB): $(LIB)
 	$(Q)cp -f $(LIB) $(RTE_OUTPUT)/lib
 ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
 	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so/')
+	$(Q)ln -s -f $< $(shell echo $@ | sed 's/\.so.*/.so.$(SOVER)/')
 endif
 
 #