Bug 732268 – sys-libs/glibc-2.31-r5: fails to compile: *** These critical programs are missing or too old: compiler (CC=x86_64-pc-linux-gnu-clang)

• Status: RESOLVED INVALID
• Product: Gentoo Linux

[Description Agostino Sarubbo 2020-07-11 19:34:21 UTC]

https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/

Issue: sys-libs/glibc fails to compile.
Discovered on: amd64  (internal ref: tinderbox)

NOTE:
This machine uses a clang/LLVM toolchain.
If you think that this issue is strictly related to clang/LLVM please block bug 408963. If you think that this issue isstrictly related to the LLD linker, please block bug 731004.

[Comment 1 Agostino Sarubbo 2020-07-11 19:34:29 UTC]

Created attachment 648950 [details]
build.log

build log and emerge --info

[Comment 2 Sergei Trofimovich (RETIRED) 2020-07-11 19:40:35 UTC]

The error is:
"""
configure: error: 
*** These critical programs are missing or too old: compiler
"""

Which comes from:

"""
AC_CACHE_CHECK([if $CC is sufficient to build libc], libc_cv_compiler_ok, [
AC_TRY_COMPILE([], [
#if !defined __GNUC__ || __GNUC__ < 6 || (__GNUC__ == 6 && __GNUC_MINOR__ < 2)
#error insufficient compiler
#endif],
               [libc_cv_compiler_ok=yes],
               [libc_cv_compiler_ok=no])])
AS_IF([test $libc_cv_compiler_ok != yes],
      [critic_missing="$critic_missing compiler"])
"""

glibc does not support clang as a main compiler.

[Comment 3 Andreas K. Hüttel 2020-10-30 19:21:58 UTC]

> 
> glibc does not support clang as a main compiler.

Exactly.