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fix detection of LIBCC for compiler-rt with clang 

Maintainer's note: at one point, -lcompiler_rt apparently worked, and
may still work and be preferable if one has manually installed the
library in a public lib directory. but with current versions of clang,
the full pathname to the library file is needed. the original patch
removed the -lcompiler_rt check; I have left it in place in case there
are users depending on it, and since, when it does work, it's
preferable so as not to code a dependency on the specific compiler
version and paths in config.mak.
This commit is contained in:
Matúš Olekšák 2018-02-21 12:03:04 -05:00 committed by Rich Felker
parent 6d6102427d
commit fcf24b9f38
1 changed files with 2 additions and 0 deletions
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2
configure vendored
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@ -598,6 +598,8 @@ tryldflag LDFLAGS_AUTO -Wl,-Bsymbolic-functions
# Find compiler runtime library # Find compiler runtime library
test -z "$LIBCC" && tryldflag LIBCC -lgcc && tryldflag LIBCC -lgcc_eh test -z "$LIBCC" && tryldflag LIBCC -lgcc && tryldflag LIBCC -lgcc_eh
test -z "$LIBCC" && tryldflag LIBCC -lcompiler_rt test -z "$LIBCC" && tryldflag LIBCC -lcompiler_rt
test -z "$LIBCC" && try_libcc=`$CC -print-libgcc-file-name 2>/dev/null` \
&& tryldflag LIBCC "$try_libcc"
test -z "$LIBCC" && try_libcc=`$CC -print-file-name=libpcc.a 2>/dev/null` \ test -z "$LIBCC" && try_libcc=`$CC -print-file-name=libpcc.a 2>/dev/null` \
&& tryldflag LIBCC "$try_libcc" && tryldflag LIBCC "$try_libcc"
printf "using compiler runtime libraries: %s\n" "$LIBCC" printf "using compiler runtime libraries: %s\n" "$LIBCC"