r600/sb: use safe math optimizations when TGSI contains precise operations

[mesa.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 4d9d9e5928012efd7591f7dd6f547ebf25073e33..f8bb131cb6329ff8c193a178df9151513258aa1c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -125,7 +125,10 @@ AC_PROG_GREP
 AC_PROG_NM
 AM_PROG_AS
 AX_CHECK_GNU_MAKE
-AC_CHECK_PROGS([PYTHON2], [python2.7 python2 python])
+AM_PATH_PYTHON([2.7],, [:])
+PYTHON2=$PYTHON
+AC_SUBST([PYTHON2])
+
 AC_PROG_SED
 AC_PROG_MKDIR_P
 
@@ -157,7 +160,7 @@ fi
 
 AX_CHECK_PYTHON_MAKO_MODULE($PYTHON_MAKO_REQUIRED)
 
-if test -z "$PYTHON2"; then
+if test "$PYTHON2" = ":"; then
     if test ! -f "$srcdir/src/util/format_srgb.c"; then
         AC_MSG_ERROR([Python not found - unable to generate sources])
     fi