maint: the compiler is not always named gcc

https://bugzilla.redhat.com/show_bug.cgi?id=994589 complained that
even when using a cross-compiler not named 'gcc', the configure
output confusingly referred to gcc.

* m4/virt-compile-warnings.m4 (LIBVIRT_COMPILE_WARNINGS): Use a
more generic statement in configure output.

Signed-off-by: Eric Blake <eblake@redhat.com>

diff --git a/m4/virt-compile-warnings.m4 b/m4/virt-compile-warnings.m4
index 8731b7073f4691d1c9fd762dcc5c6ddb84f9fbcd..6bf797fab78f08b4fbd86e62197356c06f70339b 100644 (file)
--- a/m4/virt-compile-warnings.m4
+++ b/m4/virt-compile-warnings.m4
@@ -62,7 +62,7 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
 
     # gcc 4.2 treats attribute(format) as an implicit attribute(nonnull),
     # which triggers spurious warnings for our usage
-    AC_CACHE_CHECK([whether gcc -Wformat allows NULL strings],
+    AC_CACHE_CHECK([whether the C compiler's -Wformat allows NULL strings],
       [lv_cv_gcc_wformat_null_works], [
       save_CFLAGS=$CFLAGS
       CFLAGS='-Wunknown-pragmas -Werror -Wformat'
@@ -101,7 +101,7 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
 
     dnl Check whether strchr(s, char variable) causes a bogus compile
     dnl warning, which is the case with GCC < 4.6 on some glibc
-    AC_CACHE_CHECK([whether GCC -Wlogical-op gives bogus warnings],
+    AC_CACHE_CHECK([whether the C compiler's -Wlogical-op gives bogus warnings],
       [lv_cv_gcc_wlogical_op_broken], [
       save_CFLAGS="$CFLAGS"
       CFLAGS="-O2 -Wlogical-op -Werror"