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configure: test for -msse2

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+ add a WEBP_HAVE_SSE2 to dsp.h

not all 32-bit toolchain configurations will have sse2 enabled by
default

Change-Id: I7c675e511581f93cf55c79f960fa7efa2df4987e
This commit is contained in:
James Zern
2014-06-07 19:44:08 -07:00
parent b9d2efc629
commit 6e61a3a905
3 changed files with 29 additions and 8 deletions
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6
configure.ac
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@ -67,6 +67,12 @@ AS_IF([test -n "$AVX2_FLAGS"], [
[Set to 1 if AVX2 is supported])])
AC_SUBST([AVX2_FLAGS])
TEST_AND_ADD_CFLAGS([SSE2_FLAGS], [-msse2])
AS_IF([test -n "$SSE2_FLAGS"], [
AC_DEFINE(WEBP_HAVE_SSE2, [1],
[Set to 1 if SSE2 is supported])])
AC_SUBST([SSE2_FLAGS])
dnl === CLEAR_LIBVARS([var_pfx])
dnl === Clears <var_pfx>_{INCLUDES,LIBS}.
AC_DEFUN([CLEAR_LIBVARS], [$1_INCLUDES=""; $1_LIBS=""])