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| author | Rich Felker <dalias@aerifal.cx> | 2016-02-17 13:53:54 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2016-02-17 13:53:54 -0500 |
| commit | 80fbaac4cd1930e9545a5d36bf46ae49011d2ce8 (patch) | |
| tree | 834e6c4e1f4ae6ae8262f0918b15370329197ca2 /configure | |
| parent | cf115059ba0ecd611008c89c78c37b62f8e6d6af (diff) | |
| download | musl-80fbaac4cd1930e9545a5d36bf46ae49011d2ce8.tar.gz musl-80fbaac4cd1930e9545a5d36bf46ae49011d2ce8.tar.bz2 musl-80fbaac4cd1930e9545a5d36bf46ae49011d2ce8.tar.xz musl-80fbaac4cd1930e9545a5d36bf46ae49011d2ce8.zip | |
make configure attempt to catch broken floating point CFLAGS/defaults
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -655,6 +655,16 @@ printf "no\n" fail "$0: error: unsupported long double type" fi +# +# Some build systems globally pass in broken CFLAGS like -ffast-math +# for all packages. On recent GCC we can detect this and error out +# early rather than producing a seriously-broken math library. +# +if trycppif "__FAST_MATH__ || (defined(__GCC_IEC_559) && __GCC_IEC_559==0)" \ + "$CFLAGS_C99FSE $CPPFLAGS $CFLAGS" ; then +fail "$0: error: compiler has broken floating point; check CFLAGS" +fi + printf "creating config.mak... " cmdline=$(quote "$0") |