diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 82c5009e3e8..12136261347 100644 --- a/configure.ac +++ b/configure.ac @@ -633,6 +633,13 @@ if test "$with_llvm" = yes ; then PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-fexcess-precision=standard]) PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANGXX, BITCODE_CXXFLAGS, [-fexcess-precision=standard]) + # Ideally bitcode should perhaps match $CC's use, or not, of outline atomic + # functions, but for now we err on the side of suppressing them in bitcode, + # because we can't assume they're available at runtime. This affects aarch64 + # builds using the basic armv8-a ISA without LSE support. + PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANG, BITCODE_CFLAGS, [-mno-outline-atomics]) + PGAC_PROG_VARCXX_VARFLAGS_OPT(CLANG, BITCODE_CXXFLAGS, [-mno-outline-atomics]) + NOT_THE_CFLAGS="" PGAC_PROG_VARCC_VARFLAGS_OPT(CLANG, NOT_THE_CFLAGS, [-Wunused-command-line-argument]) if test -n "$NOT_THE_CFLAGS"; then |