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| author | Jeremy Kerr <jk@ozlabs.org> | 2006-12-07 16:56:27 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2006-12-07 17:28:36 +1100 |
| commit | 4d75f099fbb83303f67792fbdcd742cac6c9b3e1 (patch) | |
| tree | 84bd80c935b37cb98acf24d55c2dbfcd6e6a18f8 | |
| parent | 5095e87610c4b1f748d15a3840000c3bb8d2a191 (diff) | |
Add build system support for altivec
This change to the libtwin build system detects altivec support, and
sets cflags and a #define HAVE_ALTIVEC if found.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | Makefile.am | 2 | ||||
| -rw-r--r-- | configure.ac | 32 |
2 files changed, 33 insertions, 1 deletions
diff --git a/Makefile.am b/Makefile.am index 0adae5e..6b5cbfa 100644 --- a/Makefile.am +++ b/Makefile.am @@ -1,4 +1,4 @@ -AM_CFLAGS = @WARN_CFLAGS@ +AM_CFLAGS = @WARN_CFLAGS@ @ALTIVEC_CFLAGS@ EXTRA_PROGRAMS = diff --git a/configure.ac b/configure.ac index e5970a7..9f10821 100644 --- a/configure.ac +++ b/configure.ac @@ -107,6 +107,37 @@ fi AC_SUBST(FREETYPE_LIBS) AC_SUBST(FREETYPE_CFLAGS) +# Altivec support +AC_ARG_ENABLE(altivec, + AC_HELP_STRING([--enable-altivec], + [Enable altivec support (default=detect)]), + twin_altivec="$enableval") + +if test x$twin_altivec = x +then + AC_MSG_CHECKING([for altivec support]) + CFLAGS_save="$CFLAGS" + CFLAGS="$CFLAGS -maltivec" + AC_TRY_COMPILE([#include <altivec.h>], + [vector unsigned int v = vec_splat_u32(0)], + twin_altivec=yes, + twin_altivec=no) + CFLAGS="$CFLAGS_save" + AC_MSG_RESULT($twin_altivec) +fi + +ALTIVEC_CFLAGS="" +AH_TEMPLATE(HAVE_ALTIVEC, + [Define if the C compiler supports altivec extensions]) + +if test x$twin_altivec = xyes +then + AC_DEFINE([HAVE_ALTIVEC]) + ALTIVEC_CFLAGS="-maltivec" +fi +AC_SUBST(ALTIVEC_CFLAGS) + + # TWIN_DEP_*FLAGS define all flags required by dependencies of libtwin TWIN_DEP_LDFLAGS="$X_LIBS $PNG_LIBS -lm" TWIN_DEPCFLAGS="$X_CFLAGS $PNG_CFLAGS" @@ -124,6 +155,7 @@ AC_MSG_NOTICE([fbdev support: $twin_fb]) AC_MSG_NOTICE([png support: $twin_png]) AC_MSG_NOTICE([twin_ttf tool: $twin_ttf]) AC_MSG_NOTICE([linux mouse: $twin_mouse]) +AC_MSG_NOTICE([altivec: $twin_altivec]) AC_OUTPUT([Makefile libtwin.pc]) |