| From cbcff58ed670c8edc0be1004384cbe0fd07d8d26 Mon Sep 17 00:00:00 2001 |
| From: Khem Raj <raj.khem@gmail.com> |
| Date: Wed, 5 Jul 2017 18:49:21 -0700 |
| Subject: [PATCH 1/2] check for available arm optimizations |
| |
| Taken From |
| http://sources.debian.net/src/mpeg2dec/0.5.1-7/debian/patches/65_arm-test-with-compiler.patch/ |
| |
| Upstream-Status: Pending |
| |
| Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| --- |
| configure.ac | 12 ++++++++---- |
| 1 file changed, 8 insertions(+), 4 deletions(-) |
| |
| diff --git a/configure.ac b/configure.ac |
| index acdcb1e..2c0a721 100644 |
| --- a/configure.ac |
| +++ b/configure.ac |
| @@ -59,7 +59,7 @@ elif test x"$GCC" = x"yes"; then |
| AC_TRY_CFLAGS([$TRY_CFLAGS $CFLAGS],[OPT_CFLAGS="$TRY_CFLAGS"]) |
| |
| dnl arch-specific flags |
| - arm_conditional=false |
| + build_arm_opt=false |
| case "$host" in |
| i?86-* | k?-* | x86_64-* | amd64-*) |
| AC_DEFINE([ARCH_X86],,[x86 architecture]) |
| @@ -102,8 +102,12 @@ elif test x"$GCC" = x"yes"; then |
| alpha*) |
| AC_DEFINE([ARCH_ALPHA],,[alpha architecture]);; |
| arm*) |
| - arm_conditional=: |
| - AC_DEFINE([ARCH_ARM],,[ARM architecture]);; |
| + AC_LANG(C) |
| + AC_COMPILE_IFELSE( |
| + [AC_LANG_SOURCE([[ |
| + void foo(void) { __asm__ volatile("pld [r1]"); }]])], |
| + build_arm_opt=true; AC_DEFINE([ARCH_ARM],,[ARM architecture]), |
| + build_arm_opt=false);; |
| esac |
| elif test x"$CC" = x"tendracc"; then |
| dnl TenDRA portability checking compiler |
| @@ -123,7 +127,7 @@ else |
| esac |
| fi |
| |
| -AM_CONDITIONAL(ARCH_ARM, ${arm_conditional}) |
| +AM_CONDITIONAL(ARCH_ARM, test x$build_arm_opt = xtrue) |
| |
| dnl Checks for libtool - this must be done after we set cflags |
| AC_LIBTOOL_WIN32_DLL |
| -- |
| 2.13.2 |
| |