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| author | Rich Felker <dalias@aerifal.cx> | 2013-08-01 17:12:23 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2013-08-01 17:12:23 -0400 |
| commit | 4a1f55e92fa74ee382909baa96302231f566b5e1 (patch) | |
| tree | 0b0cc0ee79ce1a859f1a62a3e0b79c8fde411450 /configure | |
| parent | 5db951ef80cae8b627f95b995811bf916c069757 (diff) | |
| download | musl-4a1f55e92fa74ee382909baa96302231f566b5e1.tar.gz musl-4a1f55e92fa74ee382909baa96302231f566b5e1.tar.xz musl-4a1f55e92fa74ee382909baa96302231f566b5e1.zip | |
work around gcc 4.8's generation of self-referential mem* functions at -O3
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/configure b/configure index 87207b62..1d734726 100755 --- a/configure +++ b/configure @@ -104,6 +104,7 @@ fi CFLAGS_C99FSE= CFLAGS_AUTO= +CFLAGS_MEMOPS= LDFLAGS_AUTO= OPTIMIZE_GLOBS= prefix=/usr/local/musl @@ -236,6 +237,14 @@ tryflag CFLAGS_C99FSE -fexcess-precision=standard \ || { test "$ARCH" = i386 && tryflag CFLAGS_C99FSE -ffloat-store ; } tryflag CFLAGS_C99FSE -frounding-math +# +# Check for options that may be needed to prevent the compiler from +# generating self-referential versions of memcpy,, memmove, memcmp, +# and memset. Really, we should add a check to determine if this +# option is sufficient, and if not, add a macro to cripple these +# functions with volatile... +# +tryflag CFLAGS_MEMOPS -fno-tree-loop-distribute-patterns # # If debugging is explicitly enabled, don't auto-enable optimizations @@ -403,6 +412,7 @@ syslibdir = $syslibdir CC = $CC CFLAGS= $CFLAGS_AUTO $CFLAGS CFLAGS_C99FSE = $CFLAGS_C99FSE +CFLAGS_MEMOPS = $CFLAGS_MEMOPS CPPFLAGS = $CPPFLAGS LDFLAGS = $LDFLAGS_AUTO $LDFLAGS CROSS_COMPILE = $CROSS_COMPILE |