blob: 5bf68b39ee6f40a02bdf78038871a0a0286d47bb [file] [log] [blame]
Brad Bishopd7bf8c12018-02-25 22:55:05 -05001From cbcff58ed670c8edc0be1004384cbe0fd07d8d26 Mon Sep 17 00:00:00 2001
2From: Khem Raj <raj.khem@gmail.com>
3Date: Wed, 5 Jul 2017 18:49:21 -0700
4Subject: [PATCH 1/2] check for available arm optimizations
5
6Taken From
7http://sources.debian.net/src/mpeg2dec/0.5.1-7/debian/patches/65_arm-test-with-compiler.patch/
8
9Upstream-Status: Pending
10
11Signed-off-by: Khem Raj <raj.khem@gmail.com>
12---
13 configure.ac | 12 ++++++++----
14 1 file changed, 8 insertions(+), 4 deletions(-)
15
16diff --git a/configure.ac b/configure.ac
17index 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--
542.13.2
55