llvm-toolchain-11 is FTBFS'ing with Linux 5.13 because of:
[ 8%] Building CXX object projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_posix.cpp.o
cd /<<PKGBUILDDIR>>/build-llvm/projects/compiler-rt/lib/sanitizer_common && /usr/bin/g++-11 -DHAVE_RPC_XDR_H=0 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/<<PKGBUILDDIR>>/build-llvm/projects/compiler-rt/lib/sanitizer_common -I/<<PKGBUILDDIR>>/compiler-rt/lib/sanitizer_common -I/<<PKGBUILDDIR>>/build-llvm/include -I/<<PKGBUILDDIR>>/llvm/include -I/<<PKGBUILDDIR>>/compiler-rt/lib/sanitizer_common/.. -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -ffunction-sections -fdata-sections -Wall -std=c++14 -Wno-unused-parameter -O2 -DNDEBUG -g1 -m64 -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fno-stack-protector -fvisibility=hidden -fno-lto -O3 -g -Wno-variadic-macros -Wno-non-virtual-dtor -fno-rtti -Wframe-larger-than=570 -std=c++14 -o CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_posix.cpp.o -c /<<PKGBUILDDIR>>/compiler-rt/lib/sanitizer_common/sanitizer_posix.cpp
/<<PKGBUILDDIR>>/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp:133:10: fatal error: linux/cyclades.h: No such file or directory
133 | #include <linux/cyclades.h>
| ^~~~~~~~~~~~~~~~~~
compilation terminated.
make[5]: *** [projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/build.make:358: projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_platform_limits_posix.cpp.o] Error 1
make[5]: *** Waiting for unfinished jobs....
make -f projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonCoverage.x86_64.dir/build.make projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonCoverage.x86_64.dir/depend
make[5]: Entering directory '/<<PKGBUILDDIR>>/build-llvm'
This is happening because the Cyclades driver has been finally removed from Linux (after being orphaned 13 years ago):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/include/uapi/linux?h=v5.12&id=f76edd8f7ce06cdff2fe5b6b39a49644c684a161
LLVM includes cyclades.h when building libsanitizer, and therefore the FTBFS occurs.
Upstream has fixed this by removing support for Cyclades from libsanitizer:
https://github.com/llvm/llvm-project/commit/884040db086936107ec81656aa5b4c607235fb9a
As for the GCC 11 failure, the problem is:
[ 19%] Building CXX object tools/clang/utils/TableGen/CMakeFiles/obj.clang-tblgen.dir/ClangDiagnosticsEmitter.cpp.o
cd /<<PKGBUILDDIR>>/build-llvm/tools/clang/stage2-bins/tools/clang/utils/TableGen && /<<PKGBUILDDIR>>/build-llvm/./bin/clang++ -DCLANG_VENDOR="\"Ubuntu \"" -D_GNU_SOURCE -D__STDC_CONSTANT_M
ACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/<<PKGBUILDDIR>>/build-llvm/tools/clang/stage2-bins/tools/clang/utils/TableGen -I/<<PKGBUILDDIR>>/clang/utils/TableGen -I/<<PKGBUILDDIR>
>/clang/include -I/<<PKGBUILDDIR>>/build-llvm/tools/clang/stage2-bins/tools/clang/include -I/<<PKGBUILDDIR>>/build-llvm/tools/clang/stage2-bins/include -I/<<PKGBUILDDIR>>/llvm/include -fuse
-ld=gold -fPIC -Wno-unused-command-line-argument -Wno-unknown-warning-option -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused
-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wcovered-switch-default -Wno-class-memaccess -Wno-noexcept-type -Wnon-vi
rtual-dtor -Wdelete-non-virtual-dtor -Wstring-conversion -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -Wno-nested-anon-types -O2 -DNDEBUG -g1 -fno-exceptions -std=c
++14 -o CMakeFiles/obj.clang-tblgen.dir/ClangDiagnosticsEmitter.cpp.o -c /<<PKGBUILDDIR>>/clang/utils/TableGen/ClangDiagnosticsEmitter.cpp
In file included from /<<PKGBUILDDIR>>/llvm/utils/benchmark/src/benchmark_register.cc:15:
/<<PKGBUILDDIR>>/llvm/utils/benchmark/src/benchmark_register.h:17:30: error: no member named 'numeric_limits' in namespace 'std'
static const T kmax = std::numeric_limits<T>::max();
~~~~~^
/<<PKGBUILDDIR>>/llvm/utils/benchmark/src/benchmark_register.h:17:45: error: 'T' does not refer to a value
static const T kmax = std::numeric_limits<T>::max();
^
/<<PKGBUILDDIR>>/llvm/utils/benchmark/src/benchmark_register.h:8:20: note: declared here
template <typename T>
^
/<<PKGBUILDDIR>>/llvm/utils/benchmark/src/benchmark_register.h:17:47: error: no member named 'max' in the global namespace; did you mean 'kmax'?
static const T kmax = std::numeric_limits<T>::max();
^~~~~
kmax
/<<PKGBUILDDIR>>/llvm/utils/benchmark/src/benchmark_register.h:17:18: note: 'kmax' declared here
static const T kmax = std::numeric_limits<T>::max();
This comes from the fact that GCC 11 requires the inclusion of the <limits> header in order to access std::numeric_limits<T>. This has also been fixed upstream:
https://github.com/llvm/llvm-project/commit/b498303066a63a203d24f739b2d2e0e56dca70d1
I'm preparing and testing a patch, and will attach it to this bug soon.
This is the patch to fix the current llvm-toolchain FTBFS.
I explained everything on the description already, but feel free to ask questions.
There's a PPA with the proposed change here:
https:/
This PPA depends on the "volatile" PPA that doko is using to build the packages. Unfortunately, the llvm-toolchain package takes a long time to build, but I did verify locally that the build is passing.
One of the dep8 tests is failing locally, but the failure is not related to this change. IMO, fixing the FTBFS is orthogonal to fixing the dep8 failure, which should be done later.