[PATCH 3/4] build: Add x86 architecture type detection

Detect x86 SSE availability for architecture specific convolutional decoding. Use the GNU autoconf macro AX_EXT to provide built time detection and set the following definitions. http://www.gnu.org/software/autoconf-archive/ax_ext.html HAVE_SSE3 HAVE_SSE4_1 AX_EXT is generally packaged with autoconf-archive and requires the following macro files. ax_check_compile_flag.m4 ax_ext.m4 ax_gcc_x86_avx_xgetbv.m4 ax_gcc_x86_cpuid.m4 Set -march=native for automatic compile flag setting. Combined, this allows automatic detection on x86 and pass-through support for non-x86 platforms (e.g. ARM). Signed-off-by: Thomas Tsou <tom(a)tsou.cc> --- configure.ac | 1 + src/Makefile.am | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/configure.ac b/configure.ac index eaaab50..4b0c572 100644 --- a/configure.ac +++ b/configure.ac @@ -179,6 +179,7 @@ then AC_DEFINE([PANIC_INFLOOP],[1],[Use infinite loop on panic rather than fprintf/abort]) fi +AX_EXT AC_OUTPUT( libosmocore.pc diff --git a/src/Makefile.am b/src/Makefile.am index 0ecf4b0..c0b78a8 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -2,7 +2,7 @@ # Please read Chapter 6 "Library interface versions" of the libtool documentation before making any modification LIBVERSION=4:0:0 -AM_CFLAGS = -Wall $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)/include +AM_CFLAGS = -Wall $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)/include -march=native lib_LTLIBRARIES = libosmocore.la -- 1.9.0