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
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