#1113514 snappy: FTBFS with CMake 4

Package:
src:snappy
Source:
src:snappy
Submitter:
Date:
2025-09-06 06:23:02 UTC
Severity:
normal
Tags:
#1113514#5
Date:
2025-08-31 23:04:50 UTC
From:
To:
Dear maintainer,

During a test rebuild for CMake 4, snappy failed to rebuild.

Log Summary:
-------------------------------------------------------------------------------
[...]
[ 68%] Linking CXX shared library libsnappy_test_support.so
/usr/bin/cmake -E cmake_link_script CMakeFiles/snappy_test_support.dir/link.txt --verbose=1
/usr/bin/c++ -fPIC -g -O2 -ffile-prefix-map=/build/reproducible-path/snappy-1.2.2=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -Wextra -Wno-sign-compare -fno-exceptions -O2 -g -DNDEBUG -Wl,--dependency-file=CMakeFiles/snappy_test_support.dir/link.d -shared -Wl,-z,relro -Wl,-soname,libsnappy_test_support.so -o libsnappy_test_support.so "CMakeFiles/snappy_test_support.dir/snappy-test.cc.o" CMakeFiles/snappy_test_support.dir/snappy_test_data.cc.o  -Wl,-rpath,/build/reproducible-path/snappy-1.2.2/build libsnappy.so.1.2.2
make[3]: Leaving directory '/build/reproducible-path/snappy-1.2.2/build'
[ 68%] Built target snappy_test_support
make  -f CMakeFiles/snappy_unittest.dir/build.make CMakeFiles/snappy_unittest.dir/depend
make  -f CMakeFiles/snappy_test_tool.dir/build.make CMakeFiles/snappy_test_tool.dir/depend
make  -f CMakeFiles/snappy_benchmark.dir/build.make CMakeFiles/snappy_benchmark.dir/depend
make[3]: Entering directory '/build/reproducible-path/snappy-1.2.2/build'
cd /build/reproducible-path/snappy-1.2.2/build && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /build/reproducible-path/snappy-1.2.2 /build/reproducible-path/snappy-1.2.2 /build/reproducible-path/snappy-1.2.2/build /build/reproducible-path/snappy-1.2.2/build /build/reproducible-path/snappy-1.2.2/build/CMakeFiles/snappy_unittest.dir/DependInfo.cmake "--color="
make[3]: Entering directory '/build/reproducible-path/snappy-1.2.2/build'
cd /build/reproducible-path/snappy-1.2.2/build && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /build/reproducible-path/snappy-1.2.2 /build/reproducible-path/snappy-1.2.2 /build/reproducible-path/snappy-1.2.2/build /build/reproducible-path/snappy-1.2.2/build /build/reproducible-path/snappy-1.2.2/build/CMakeFiles/snappy_test_tool.dir/DependInfo.cmake "--color="
make[3]: Entering directory '/build/reproducible-path/snappy-1.2.2/build'
cd /build/reproducible-path/snappy-1.2.2/build && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /build/reproducible-path/snappy-1.2.2 /build/reproducible-path/snappy-1.2.2 /build/reproducible-path/snappy-1.2.2/build /build/reproducible-path/snappy-1.2.2/build /build/reproducible-path/snappy-1.2.2/build/CMakeFiles/snappy_benchmark.dir/DependInfo.cmake "--color="
make[3]: Leaving directory '/build/reproducible-path/snappy-1.2.2/build'
make[3]: Leaving directory '/build/reproducible-path/snappy-1.2.2/build'
make[3]: Leaving directory '/build/reproducible-path/snappy-1.2.2/build'
make  -f CMakeFiles/snappy_unittest.dir/build.make CMakeFiles/snappy_unittest.dir/build
make  -f CMakeFiles/snappy_test_tool.dir/build.make CMakeFiles/snappy_test_tool.dir/build
make  -f CMakeFiles/snappy_benchmark.dir/build.make CMakeFiles/snappy_benchmark.dir/build
make[3]: Entering directory '/build/reproducible-path/snappy-1.2.2/build'
make[3]: Entering directory '/build/reproducible-path/snappy-1.2.2/build'
make[3]: Entering directory '/build/reproducible-path/snappy-1.2.2/build'
[ 78%] Building CXX object CMakeFiles/snappy_test_tool.dir/snappy_test_tool.cc.o
[ 84%] Building CXX object CMakeFiles/snappy_benchmark.dir/snappy_benchmark.cc.o
[ 84%] Building CXX object CMakeFiles/snappy_unittest.dir/snappy_unittest.cc.o
/usr/bin/c++ -DHAVE_CONFIG_H -I/build/reproducible-path/snappy-1.2.2 -I/build/reproducible-path/snappy-1.2.2/build -g -O2 -ffile-prefix-map=/build/reproducible-path/snappy-1.2.2=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -Wextra -Wno-sign-compare -fno-exceptions -O2 -g -DNDEBUG -std=gnu++14 -MD -MT CMakeFiles/snappy_test_tool.dir/snappy_test_tool.cc.o -MF CMakeFiles/snappy_test_tool.dir/snappy_test_tool.cc.o.d -o CMakeFiles/snappy_test_tool.dir/snappy_test_tool.cc.o -c /build/reproducible-path/snappy-1.2.2/snappy_test_tool.cc
/usr/bin/c++ -DHAVE_CONFIG_H -I/build/reproducible-path/snappy-1.2.2 -I/build/reproducible-path/snappy-1.2.2/build -g -O2 -ffile-prefix-map=/build/reproducible-path/snappy-1.2.2=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -Wextra -Wno-sign-compare -fno-exceptions -O2 -g -DNDEBUG -std=gnu++14 -MD -MT CMakeFiles/snappy_benchmark.dir/snappy_benchmark.cc.o -MF CMakeFiles/snappy_benchmark.dir/snappy_benchmark.cc.o.d -o CMakeFiles/snappy_benchmark.dir/snappy_benchmark.cc.o -c /build/reproducible-path/snappy-1.2.2/snappy_benchmark.cc
/usr/bin/c++ -DHAVE_CONFIG_H -I/build/reproducible-path/snappy-1.2.2 -I/build/reproducible-path/snappy-1.2.2/build -g -O2 -ffile-prefix-map=/build/reproducible-path/snappy-1.2.2=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -Wextra -Wno-sign-compare -fno-exceptions -O2 -g -DNDEBUG -std=gnu++14 -MD -MT CMakeFiles/snappy_unittest.dir/snappy_unittest.cc.o -MF CMakeFiles/snappy_unittest.dir/snappy_unittest.cc.o.d -o CMakeFiles/snappy_unittest.dir/snappy_unittest.cc.o -c /build/reproducible-path/snappy-1.2.2/snappy_unittest.cc
In file included from /usr/include/gtest/gtest-message.h:57,
                 from /usr/include/gtest/gtest-assertion-result.h:46,
                 from /usr/include/gtest/gtest.h:63,
                 from /build/reproducible-path/snappy-1.2.2/snappy_unittest.cc:40:
/usr/include/gtest/internal/gtest-port.h:273:2: error: #error C++ versions less than C++17 are not supported.
  273 | #error C++ versions less than C++17 are not supported.
      |  ^~~~~
In file included from /usr/include/gtest/gtest.h:67:
/usr/include/gtest/gtest-param-test.h:483:56: error: missing template arguments before ‘(’ token
  483 |           typename StdFunction = decltype(std::function(std::declval<Func>()))>
      |                                                        ^
/usr/include/gtest/gtest-param-test.h:493:56: error: missing template arguments before ‘(’ token
  493 |           typename StdFunction = decltype(std::function(std::declval<Func>()))>
      |                                                        ^
[ 89%] Linking CXX executable snappy_test_tool
/usr/bin/cmake -E cmake_link_script CMakeFiles/snappy_test_tool.dir/link.txt --verbose=1
make[3]: *** [CMakeFiles/snappy_unittest.dir/build.make:82: CMakeFiles/snappy_unittest.dir/snappy_unittest.cc.o] Error 1
make[3]: Leaving directory '/build/reproducible-path/snappy-1.2.2/build'
make[2]: *** [CMakeFiles/Makefile2:202: CMakeFiles/snappy_unittest.dir/all] Error 2
make[2]: *** Waiting for unfinished jobs....
/usr/bin/c++ -g -O2 -ffile-prefix-map=/build/reproducible-path/snappy-1.2.2=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -Wextra -Wno-sign-compare -fno-exceptions -O2 -g -DNDEBUG -Wl,-z,relro -Wl,--dependency-file=CMakeFiles/snappy_test_tool.dir/link.d CMakeFiles/snappy_test_tool.dir/snappy_test_tool.cc.o -o snappy_test_tool  -Wl,-rpath,/build/reproducible-path/snappy-1.2.2/build libsnappy_test_support.so libsnappy.so.1.2.2
make[3]: Leaving directory '/build/reproducible-path/snappy-1.2.2/build'
[ 89%] Built target snappy_test_tool
[ 94%] Linking CXX executable snappy_benchmark
/usr/bin/cmake -E cmake_link_script CMakeFiles/snappy_benchmark.dir/link.txt --verbose=1
/usr/bin/c++ -g -O2 -ffile-prefix-map=/build/reproducible-path/snappy-1.2.2=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -Wextra -Wno-sign-compare -fno-exceptions -O2 -g -DNDEBUG -Wl,-z,relro -Wl,--dependency-file=CMakeFiles/snappy_benchmark.dir/link.d CMakeFiles/snappy_benchmark.dir/snappy_benchmark.cc.o -o snappy_benchmark  -Wl,-rpath,/build/reproducible-path/snappy-1.2.2/build libsnappy_test_support.so -lbenchmark_main -lbenchmark -lpthread libsnappy.so.1.2.2
make[3]: Leaving directory '/build/reproducible-path/snappy-1.2.2/build'
[ 94%] Built target snappy_benchmark
make[2]: Leaving directory '/build/reproducible-path/snappy-1.2.2/build'
make[1]: *** [Makefile:149: all] Error 2
make[1]: Leaving directory '/build/reproducible-path/snappy-1.2.2/build'
dh_auto_build: error: cd build && make -j8 "INSTALL=install --strip-program=true" VERBOSE=1 returned exit code 2
make: *** [debian/rules:24: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
--------------------------------------------------------------------------------
Build finished at 2025-08-30T20:37:04Z
-------------------------------------------------------------------------------

The above is just how the build ends and not necessarily the most relevant part.
If required, the full build log is available here (for the next 30 days):
https://debusine.debian.net/artifact/2411298/

The most likely cause of build failures is the removed backwards compatibility for
CMake versions earlier than 3.5. You can find additional information in my
debian-devel announcement:

https://lists.debian.org/debian-devel/2025/04/msg00310.html

About the archive rebuild: The build was made on debusine.debian.net,
using sbuild.

You can find the build task here:
https://debusine.debian.net/work-request/154886/

If this is really a bug in one of the build-depends, please use
reassign and affects, so that this is still visible in the BTS web
page for this package.

Thanks,
Timo
#1113514#12
Date:
2025-09-01 11:52:35 UTC
From:
To:
I have downgraded the bug to non-RC severity temporarily and reverted
CMake in unstable to version 3.31.6. I plan to re-upgrade in about a
month's time. I realize that despite my April announcement, the upload
to unstable came rather surprising, and I don't want to cause
unnecessary pain.

Also, the build log URL has an unfortunate mistake. The correct URL
should include the workspace, i.e.,

https://debusine.debian.net/debian/developers/artifact/XXXX

CMake 4 will also be available in experimental again, so it can be
used to verify that the bug is fixed.

Cheers
Timo
#1113514#17
Date:
2025-09-06 06:20:57 UTC
From:
To:
We believe that the bug you reported is fixed in the latest version of
snappy, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1113514@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Laszlo Boszormenyi (GCS) <gcs@debian.org> (supplier of updated snappy package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sat, 06 Sep 2025 07:43:57 +0200
Source: snappy
Architecture: source
Version: 1.2.2-2
Distribution: unstable
Urgency: medium
Maintainer: Laszlo Boszormenyi (GCS) <gcs@debian.org>
Changed-By: Laszlo Boszormenyi (GCS) <gcs@debian.org>
Closes: 1113514 1114388
Changes:
 snappy (1.2.2-2) unstable; urgency=medium
 .
   * Configure with C++17 standard (closes: #1113514, #1114388).
   * Update Standards-Version to 4.7.2 .
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