Signed-off-by: Christophe CURIS <[email protected]>
---
configure.ac | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/configure.ac b/configure.ac
index 40f76fb..c5d3167 100644
--- a/configure.ac
+++ b/configure.ac
@@ -153,6 +153,11 @@ AS_IF([test "x$debug" = "xyes"],
dnl too complicated to maintain
AX_CFLAGS_GCC_OPTION([-Wdisabled-optimization])
dnl
+ dnl Because of C's type promotion, the compiler has to generate
+ dnl less optimal code when a double constant is used in a
+ dnl float expression
+ AX_CFLAGS_GCC_OPTION([-Wdouble-promotion])
+ dnl
dnl Floating-point comparison is not a good idea
AX_CFLAGS_GCC_OPTION([-Wfloat-equal])
dnl
--
2.1.4
--
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