Bug 630744 – sys-libs/compiler-rt-5.0.0 fails configure: x86_64-pc-linux-gnu-clang is not a full path and was not found in the PATH

• Product: Gentoo Linux
• Status: RESOLVED INVALID

[Description Kent Fredric (IRC: kent\n) (RETIRED) 2017-09-11 21:47:33 UTC]

Created attachment 494070 [details]
build logs concatenated with `tail -n +1`

I suspect its a dependency issue, or portage's resolver (specifically, I know fun things can happen around --onlydeps, but this doesn't really look like how that typically pans out)

FEATURES=-test emerge -t1 --quiet-build=y --quiet-repo-display --nospinner --autounmask=y --autounmask-keep-masks=y --autounmask-unrestricted-atoms=n --autounmask-unrestricted-atoms=n --autounmask-continue --unordered-display --verbose --backtrack=10 --onlydeps --with-test-deps=y =sys-devel/clang-5.0.0

...

[nomerge       ] sys-devel/clang-5.0.0:5 [3.8.1-r100:0/3.8] USE="doc static-analyzer -debug -default-compiler-rt -default-libcxx {-test} -xml (-z3)" LLVM_TARGETS="(X86) -AArch64 -AMDGPU -ARM -BPF -Hexagon -Lanai -MSP430 -Mips -NVPTX -PowerPC -Sparc -SystemZ -XCore" PYTHON_TARGETS="python2_7"
[ebuild  N    ~]  sys-devel/clang-runtime-5.0.0:5.0.0  USE="compiler-rt openmp sanitize -libcxx" 0 KiB
[ebuild  N    ~]   sys-libs/compiler-rt-5.0.0:5.0.0  USE="clang {-test}" 1,473 KiB
[ebuild  N    ~]   sys-libs/compiler-rt-sanitizers-5.0.0:5.0.0  USE="{-test}" 0 KiB
[ebuild     U ~]   sys-libs/libomp-5.0.0:0/0 [3.9.0:0/3.9] USE="-hwloc -ompt {-test%}" 2,026 KiB


...


>>> Working in BUILD_DIR: "/var/tmp/portage/sys-libs/compiler-rt-5.0.0/work/compiler-rt-5.0.0_build"
cmake -C /var/tmp/portage/sys-libs/compiler-rt-5.0.0/work/compiler-rt-5.0.0_build/gentoo_common_config.cmake -G Ninja -DCMAKE_INSTALL_PREFIX=/usr -DCOMPILER_RT_INSTALL_PATH=/usr/lib/clang/5.0.0 -DCOMPILER_RT_INCLUDE_TESTS=no -DCOMPILER_RT_BUILD_SANITIZERS=OFF -DCOMPILER_RT_BUILD_XRAY=OFF -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_USER_MAKE_RULES_OVERRIDE=/var/tmp/portage/sys-libs/compiler-rt-5.0.0/work/compiler-rt-5.0.0_build/gentoo_rules.cmake -DCMAKE_TOOLCHAIN_FILE=/var/tmp/portage/sys-libs/compiler-rt-5.0.0/work/compiler-rt-5.0.0_build/gentoo_toolchain.cmake  /var/tmp/portage/sys-libs/compiler-rt-5.0.0/work/compiler-rt-5.0.0.src
loading initial cache file /var/tmp/portage/sys-libs/compiler-rt-5.0.0/work/compiler-rt-5.0.0_build/gentoo_common_config.cmake
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
-- The ASM compiler identification is unknown
-- Found assembler: x86_64-pc-linux-gnu-clang
CMake Error at CMakeLists.txt:14 (project):
  The CMAKE_C_COMPILER:

    x86_64-pc-linux-gnu-clang

  is not a full path and was not found in the PATH.

  Tell CMake where to find the compiler by setting either the environment
  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
  the compiler, or to the compiler name if it is in the PATH.


CMake Error at CMakeLists.txt:14 (project):
  The CMAKE_CXX_COMPILER:

    x86_64-pc-linux-gnu-clang++

  is not a full path and was not found in the PATH.

  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.


CMake Error at CMakeLists.txt:14 (project):
  The CMAKE_ASM_COMPILER:

    x86_64-pc-linux-gnu-clang

  is not a full path and was not found in the PATH.

  Tell CMake where to find the compiler by setting either the environment
  variable "ASM" or the CMake cache entry CMAKE_ASM_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.


-- Warning: Did not find file Compiler/-ASM
-- Configuring incomplete, errors occurred!

[Comment 1 Michał Górny 2017-09-12 13:44:15 UTC]

Specifying the correct package helps me save time not trying to figure out wtf did you get USE=clang from.

[Comment 2 Michał Górny 2017-09-12 13:46:00 UTC]

PEBKAC. This is a circular dependency (clang PDEP runtime RDEP compiler-rt DEP clang), and your --onlydeps hackery attempts to satisfy it in the wrong order.

[Comment 3 Kent Fredric (IRC: kent\n) (RETIRED) 2017-09-12 17:03:53 UTC]

(In reply to Michał Górny from comment #2)
> and your --onlydeps hackery attempts to satisfy it in the wrong
> order.

I'd probably say then this makes it a portage bug among the handful of other 
--onlydeps bugs. 

But its understandably a mess trying to do the right thing here.