diff options
| -rwxr-xr-x | configure | 14 | ||||
| -rw-r--r-- | src/math/arm/fabsf.c | 2 | ||||
| -rw-r--r-- | src/math/arm/sqrtf.c | 2 |
3 files changed, 16 insertions, 2 deletions
diff --git a/configure b/configure index 0e365856..5a92ea01 100755 --- a/configure +++ b/configure @@ -588,6 +588,20 @@ fi if test "$ARCH" = "arm" ; then trycppif __ARMEB__ "$t" && SUBARCH=${SUBARCH}eb trycppif __ARM_PCS_VFP "$t" && SUBARCH=${SUBARCH}hf +# Versions of clang up until at least 3.8 have the wrong constraint codes +# for floating point operands to inline asm. Detect this so the affected +# source files can just disable the asm. +if test "$cc_family" = clang ; then +printf "checking whether clang's vfp asm constraints work... " +echo 'float f(float x) { __asm__("":"+t"(x)); return x; }' > "$tmpc" +if $CC $CFLAGS_C99FSE $CPPFLAGS $CFLAGS -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then +printf "yes\n" +else +printf "no\n" +CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_VFP_ASM" +CFLAGS_AUTO="${CFLAGS_AUTO# }" +fi +fi fi if test "$ARCH" = "aarch64" ; then diff --git a/src/math/arm/fabsf.c b/src/math/arm/fabsf.c index 28153a61..4a217c98 100644 --- a/src/math/arm/fabsf.c +++ b/src/math/arm/fabsf.c @@ -1,6 +1,6 @@ #include <math.h> -#if __ARM_PCS_VFP +#if __ARM_PCS_VFP && !BROKEN_VFP_ASM float fabsf(float x) { diff --git a/src/math/arm/sqrtf.c b/src/math/arm/sqrtf.c index 98858ecd..32693293 100644 --- a/src/math/arm/sqrtf.c +++ b/src/math/arm/sqrtf.c @@ -1,6 +1,6 @@ #include <math.h> -#if __ARM_PCS_VFP || (__VFP_FP__ && !__SOFTFP__) +#if (__ARM_PCS_VFP || (__VFP_FP__ && !__SOFTFP__)) && !BROKEN_VFP_ASM float sqrtf(float x) { |