Hi,
Am 13.04.26 um 19:06 schrieb Rene Engelhard:
Hi,
Am 13.04.26 um 18:53 schrieb Rene Engelhard:
Maybe. Or this is another case of what plagued libreoffice and was worked
around with
https://salsa.debian.org/libreoffice-team/libreoffice/libreoffice/-/blob/master/patches/gcc16.diff?ref_type=heads#L59
ff. and
See also upstreams
https://gerrit.libreoffice.org/c/core/+/202511/comments/b6a92d32_0c72b450 and
following comments...
And indeed the same happens:
checking how to run the C++ preprocessor... g++ -std=gnu++11 -E
checking for ld used by g++ -std=gnu++11... /usr/bin/x86_64-linux-gnu-ld -m
elf_x86_64
checking if the linker (/usr/bin/x86_64-linux-gnu-ld -m elf_x86_64) is GNU
ld... yes
checking whether the g++ -std=gnu++11 linker (/usr/bin/x86_64-linux-gnu-ld -m
elf_x86_64) supports shared libraries... yes
checking for g++ -std=gnu++11 option to produce PIC... -fPIC -DPIC
checking if g++ -std=gnu++11 PIC flag -fPIC -DPIC works... yes
checking if g++ -std=gnu++11 static flag -static works... yes
checking if g++ -std=gnu++11 supports -c -o file.o... yes
checking if g++ -std=gnu++11 supports -c -o file.o... (cached) yes
checking whether the g++ -std=gnu++11 linker (/usr/bin/x86_64-linux-gnu-ld -m
elf_x86_64) supports shared libraries... yes
checking dynamic linker characteristics... (cached) GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether g++ -std=gnu++11 supports C++11 features by default... yes
Looks like it.
That of course breaks. Now the question is why autoconf unhelpfully adds that
with gcc 16...
CC'ing the autoconf maintainer. I see 2.72-6 removing
debian/patches/fix-cxx-stdcxx-test.diff but according to the debdiff it was not
applied before anyway...
That might also be the explanation for a loads of other gcc 16 FTBFS....
# work around autoconf unhelpfully adding -std=gnu++11 which breaks with gcc 16
SYSTEM_GCC_VERSION = $(shell gcc --version | sed -n '/^gcc/s/.*\(..\..\)\../\1/p' | cut
-d" " -f1 | cut -d. -f1)
ifeq "$(shell test $(SYSTEM_GCC_VERSION) -ge 16 && echo true)" "true"
export DEB_CXXFLAGS_MAINT_APPEND += -std=gnu++17
endif
in debian/rules in libe-book works but that of course is extremely ugly...
Regards,
Rene
