| Brad Bishop | d7bf8c1 | 2018-02-25 22:55:05 -0500 | [diff] [blame] | 1 | From cbcff58ed670c8edc0be1004384cbe0fd07d8d26 Mon Sep 17 00:00:00 2001 |
| 2 | From: Khem Raj <raj.khem@gmail.com> |
| 3 | Date: Wed, 5 Jul 2017 18:49:21 -0700 |
| 4 | Subject: [PATCH 1/2] check for available arm optimizations |
| 5 | |
| 6 | Taken From |
| 7 | http://sources.debian.net/src/mpeg2dec/0.5.1-7/debian/patches/65_arm-test-with-compiler.patch/ |
| 8 | |
| 9 | Upstream-Status: Pending |
| 10 | |
| 11 | Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| 12 | --- |
| 13 | configure.ac | 12 ++++++++---- |
| 14 | 1 file changed, 8 insertions(+), 4 deletions(-) |
| 15 | |
| 16 | diff --git a/configure.ac b/configure.ac |
| 17 | index acdcb1e..2c0a721 100644 |
| 18 | --- a/configure.ac |
| 19 | +++ b/configure.ac |
| 20 | @@ -59,7 +59,7 @@ elif test x"$GCC" = x"yes"; then |
| 21 | AC_TRY_CFLAGS([$TRY_CFLAGS $CFLAGS],[OPT_CFLAGS="$TRY_CFLAGS"]) |
| 22 | |
| 23 | dnl arch-specific flags |
| 24 | - arm_conditional=false |
| 25 | + build_arm_opt=false |
| 26 | case "$host" in |
| 27 | i?86-* | k?-* | x86_64-* | amd64-*) |
| 28 | AC_DEFINE([ARCH_X86],,[x86 architecture]) |
| 29 | @@ -102,8 +102,12 @@ elif test x"$GCC" = x"yes"; then |
| 30 | alpha*) |
| 31 | AC_DEFINE([ARCH_ALPHA],,[alpha architecture]);; |
| 32 | arm*) |
| 33 | - arm_conditional=: |
| 34 | - AC_DEFINE([ARCH_ARM],,[ARM architecture]);; |
| 35 | + AC_LANG(C) |
| 36 | + AC_COMPILE_IFELSE( |
| 37 | + [AC_LANG_SOURCE([[ |
| 38 | + void foo(void) { __asm__ volatile("pld [r1]"); }]])], |
| 39 | + build_arm_opt=true; AC_DEFINE([ARCH_ARM],,[ARM architecture]), |
| 40 | + build_arm_opt=false);; |
| 41 | esac |
| 42 | elif test x"$CC" = x"tendracc"; then |
| 43 | dnl TenDRA portability checking compiler |
| 44 | @@ -123,7 +127,7 @@ else |
| 45 | esac |
| 46 | fi |
| 47 | |
| 48 | -AM_CONDITIONAL(ARCH_ARM, ${arm_conditional}) |
| 49 | +AM_CONDITIONAL(ARCH_ARM, test x$build_arm_opt = xtrue) |
| 50 | |
| 51 | dnl Checks for libtool - this must be done after we set cflags |
| 52 | AC_LIBTOOL_WIN32_DLL |
| 53 | -- |
| 54 | 2.13.2 |
| 55 | |