autoconf: Report the compiler options in the summary
Report the compiler flags and macros that will be used in the build.
This just provides a quick way to see what configure has silently been
doing.
diff --git a/configure.ac b/configure.ac
index 6330cf8..94d84ec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -804,6 +804,18 @@
echo " Demos: $program_dirs"
fi
+dnl Compiler options
+# cleanup the CFLAGS/CXXFLAGS/DEFINES vars
+cflags=`echo $CFLAGS $OPT_FLAGS $PIC_FLAGS $ARCH_FLAGS | \
+ $SED 's/^ *//;s/ */ /;s/ *$//'`
+cxxflags=`echo $CXXFLAGS $OPT_FLAGS $PIC_FLAGS $ARCH_FLAGS | \
+ $SED 's/^ *//;s/ */ /;s/ *$//'`
+defines=`echo $DEFINES $ASM_FLAGS | $SED 's/^ *//;s/ */ /;s/ *$//'`
+echo ""
+echo " CFLAGS: $cflags"
+echo " CXXFLAGS: $cxxflags"
+echo " Macros: $defines"
+
echo ""
echo " Run 'make' to build Mesa"
echo ""