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build: tms470: work around glibc math.h problems

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The glibc definitions of INFINITY and NAN do not work with the
tms470 compiler, nor do our usual fallbacks.

Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard 2012-10-13 03:16:13 +01:00
parent 5ab432fa35
commit b6f8d635f2
2 changed files with 8 additions and 0 deletions
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7
compat/tms470/math.h Normal file
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@ -0,0 +1,7 @@
#include_next <math.h>
#undef INFINITY
#undef NAN
#define INFINITY (*(const float*)((const unsigned []){ 0x7f800000 }))
#define NAN (*(const float*)((const unsigned []){ 0x7fc00000 }))

1
configure vendored
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@ -2911,6 +2911,7 @@ test -n "$libc_type" && enable $libc_type
# hacks for compiler/libc/os combinations
if enabled_all tms470 glibc; then
CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
add_cppflags -D__USER_LABEL_PREFIX__=
add_cppflags -D__builtin_memset=memset
add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED