Fixes unused argument warnings in config.log.

The test programs used for some of the configure checks use dummy
main() functions which ignore argc and argv.  Adding void casts keeps
these from giving warnings in config.log.

TESTED:
Build still works, and relevant warnings in config.log are gone.

1 files changed, 4 insertions, 0 deletions

diff --git a/SConstruct b/SConstruct
index 6e6caf96..9a1eb799 100644
--- a/SConstruct
+++ b/SConstruct
@@ -570,6 +570,7 @@ def CheckCompilerOption(context, option):
     context.env.Append(CFLAGS=option)
     ret = context.TryLink("""
         int main(int argc, char **argv) {
+            (void) argc; (void) argv;
             return 0;
         }
     """, '.c')
@@ -587,6 +588,7 @@ def CheckHeaderDefines(context, file, define):
         #error %s is not defined
         #endif
         int main(int argc, char **argv) {
+            (void) argc; (void) argv;
             return 0;
         }
     """ % (file, define, define), '.c')
@@ -601,6 +603,7 @@ def CheckCompilerDefines(context, define):
         #error %s is not defined
         #endif
         int main(int argc, char **argv) {
+            (void) argc; (void) argv;
             return 0;
         }
     """ % (define, define), '.c')
@@ -617,6 +620,7 @@ def CheckC11(context):
         #error Not C11
         #endif
         int main(int argc, char **argv) {
+            (void) argc; (void) argv;
             return 0;
         }
     """, '.c')