Require C99

4c39d94d · Mathis Rosenhauer · 4157870c · 4c39d94d · 4c39d94d
Commit 4c39d94d authored Aug 01, 2013 by Mathis Rosenhauer
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INSTALL INSTALL +17 -0

configure.ac configure.ac +1 -0

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--- a/INSTALL
+++ b/INSTALL
+============
+Installation
+============
+
 The most common installation procedure looks as follows.

 Unpack the tar archive and change into the unpacked directory.

  ./configure
  make check install
+
+
+=======================
+Intel compiler settings
+=======================
+
+The Intel compiler can improve performance by vectorizing certain
+parts of the code on x86 architectures.
+
+  ./configure CC=icc
+  make CFLAGS="-O3 -xCORE-AVX2"
+
+This assumes that you have a CPU which supports AVX2.
--- a/configure.ac
+++ b/configure.ac
@@ -12,6 +12,7 @@ AM_INIT_AUTOMAKE

 # Checks for programs.
 AC_PROG_CC
+AC_PROG_CC_C99

 # Checks for libraries.
 AC_CHECK_LIB([aec], [aec_decode])