https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89023
Bug ID: 89023
Summary: libstdc++ test failure; can't find omp.h with
--disable-libgomp
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: sandra at gcc dot gnu.org
Target Milestone: ---
On nios2-elf, I'm seeing
FAIL: 28_regex/headers/regex/parallel_mode.cc (test for excess errors)
Specifically:
In file included from
/path/to/nios2-elf/include/c++/9.0.0/parallel/algobase.h:40,
from
/path/to/nios2-elf/include/c++/9.0.0/bits/stl_algobase.h:1459,
from /path/to/nios2-elf/include/c++/9.0.0/algorithm:61,
from /path/to/nios2-elf/include/c++/9.0.0/regex:38,
from
/path/to/src/gcc/libstdc++-v3/testsuite/28_regex/headers/regex/parallel_mode.cc:22:
/path/to/nios2-elf/include/c++/9.0.0/parallel/base.h:37: fatal error: omp.h: No
such file or directory
I'm building for this bare-metal target with --disable-libgomp so of course
there is no omp.h being installed, and this test cannot work.
Is there some reason this test is conditionalized differently than, say,
28_regex/headers/regex/parallel_mode.cc ?? That one is properly recognized as
unsupported on this target.
Also, the underlying failure seems related to pr35887. Why is libstdc++ even
installing headers that depend on omp.h with --disable-libgomp?
