Config.in: update BR2_OPTIMIZE_FAST prompt and help text

Update label as suggested by Stéphane Veyret, as -Ofast is potentially
dangerous, and may break packages.

Fixes:

 - https://bugs.buildroot.org/show_bug.cgi?id=13046

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

diff --git a/Config.in b/Config.in
index 0104d1319e0d21997876a8155bcee98989fa946b..e35a78fb71ba6024b5be4529d88bcc39bbc69b7c 100644 (file)
--- a/Config.in
+++ b/Config.in
@@ -521,13 +521,14 @@ config BR2_OPTIMIZE_S
          This is the default.
 
 config BR2_OPTIMIZE_FAST
-       bool "optimize for fast"
+       bool "optimize for fast (may break packages!)"
        depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
        help
          Optimize for fast. Disregard strict standards
          compliance. -Ofast enables all -O3 optimizations. It also
          enables optimizations that are not valid for all
-         standard-compliant programs. It turns on -ffast-math and the
+         standard-compliant programs, so be careful, as it may break
+         some packages. It turns on -ffast-math and the
          Fortran-specific -fstack-arrays, unless -fmax-stack-var-size
          is specified, and -fno-protect-parens.