build: avoid new warnings from gcc 4.5.0 20090517

* configure.ac: Add an explicit -Wno-logical-op,
now that not listing -Wlogical-op is insufficient.

diff --git a/configure.ac b/configure.ac
index b738d4a..68a940c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -99,6 +99,11 @@ if test "$gl_gcc_warnings" = yes; then
   gl_WARN_ADD([-Wno-sign-compare])     # Too many warnings for now
   gl_WARN_ADD([-Wno-pointer-sign])     # Too many warnings for now
   gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
+
+  # In spite of excluding -Wlogical-op above, it is enabled, as of
+  # gcc 4.5.0 20090517, and it provokes warnings in cat.c, dd.c, truncate.c
+  gl_WARN_ADD([-Wno-logical-op])
+
   gl_WARN_ADD([-fdiagnostics-show-option])
 
   AC_SUBST([WARN_CFLAGS])