[Spice-devel] [PATCH] m4: WARN FLAGS: Drop -Wenum-compare

[Uri Lublin]

My RHEL-6 gcc (4.4.7) complains a lot about it:
   cc1: warning: command line option "-Wenum-compare" is
   valid for C++/ObjC++ but not for C

For older gcc version (e.g. 4.4.7), man gcc says
-Wenum-compare is "C++ and Objective-C++ only".

For newer gcc (e.g. 4.9.2), man gcc says
"In C this warning is enabled by -Wall."
---
 m4/spice-compile-warnings.m4 |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/m4/spice-compile-warnings.m4 b/m4/spice-compile-warnings.m4
index 31f2a9c..ee85429 100644
--- a/m4/spice-compile-warnings.m4
+++ b/m4/spice-compile-warnings.m4
@@ -23,6 +23,9 @@ AC_DEFUN([SPICE_COMPILE_WARNINGS],[
     dontwarn="$dontwarn -Wc++-compat"
     dontwarn="$dontwarn -Wabi"
     dontwarn="$dontwarn -Wdeprecated"
+    # For older gcc versions, -Wenum-compare is "C++ and Objective-C++ only"
+    # For newer gcc versions, -Wenum-compare is "enabled by -Wall"
+    dontwarn="$dontwarn -Wenum-compare"
     # Don't care about ancient C standard compat
     dontwarn="$dontwarn -Wtraditional"
     # Don't care about ancient C standard compat
-- 
1.7.1