Build fails with glibc >= 2.34

[ggardet]

Build fails with glibc >= 2.34 with:

[ 6426s] [ 91%] Building CXX object tools/hscollider/CMakeFiles/hscollider.dir/sig.cpp.o
[ 6426s] cd /home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7/build/tools/hscollider && /usr/bin/c++  -I/home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7/tools/hscollider -I/home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7/build/tools/hscollider -I/home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7/tools/hscollider -I/home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7/src -I/home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7/build -I/home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7 -I/home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7/tools/src -I/home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7/util -isystem /home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7/include -mbranch-protection=standard -O2 -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type  -g -march=armv8-a+crypto+crc -mtune=native  -O3 -std=c++17 -Wall -Wextra -Wshadow -Wswitch -Wreturn-type -Wcast-qual -Wno-deprecated -Wnon-virtual-dtor -fno-strict-aliasing -fno-new-ttp-matching -DNDEBUG -Wno-maybe-uninitialized -Wno-abi -fno-omit-frame-pointer -fvisibility=hidden -Wvla -Wpointer-arith -Wno-unused-const-variable -Wno-ignored-attributes -Wno-redundant-move -Wmissing-declarations  -g -DNDEBUG -MD -MT tools/hscollider/CMakeFiles/hscollider.dir/sig.cpp.o -MF CMakeFiles/hscollider.dir/sig.cpp.o.d -o CMakeFiles/hscollider.dir/sig.cpp.o -c /home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7/tools/hscollider/sig.cpp
[ 6428s] In file included from /usr/include/signal.h:328,
[ 6428s]                  from /home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7/tools/hscollider/sig.cpp:40:
[ 6428s] /home/abuild/rpmbuild/BUILD/vectorscan-vectorscan-5.4.7/tools/hscollider/sig.cpp:169:40: error: size of array 'alt_stack_loc' is not an integral constant-expression
[ 6428s]   169 | static TLS_VARIABLE char alt_stack_loc[SIGSTKSZ];
[ 6428s]       |                                        ^~~~~~~~

This was found on openSUSE Tumbleweed aarch64.

[markos]

This is the case with original hyperscan as well. Working on backporting a few fixes from upstream at the moment including this one.

[markos]

This should be fixed in #118