don't set -Wmissing-noreturn on Windows because libtool

diff --git a/configure.ac b/configure.ac
index 01df09db9800f74b478db3247feec12b5f16448e..cabd87bfdb8f48c0e7b6414c61a7e42662a22e87 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -254,7 +254,13 @@ test_gcc_flag() {
 # If using GCC specify some additional parameters
 if test "x$GCC" = "xyes" ; then
 
-    DESIRED_FLAGS="-Wall -W -Wextra -pedantic -pipe -Wformat -Wold-style-definition -Wdeclaration-after-statement -Wfloat-equal -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-noreturn -Wshadow -Wendif-labels -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -fdiagnostics-show-option -Wno-cast-qual -fno-strict-aliasing"
+    DESIRED_FLAGS="-Wall -W -Wextra -pedantic -pipe -Wformat -Wold-style-definition -Wdeclaration-after-statement -Wfloat-equal -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wshadow -Wendif-labels -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -fdiagnostics-show-option -Wno-cast-qual -fno-strict-aliasing"
+
+    # when compiling for MingW, -Wmissing-noreturn is triggered a bunch of
+    # times from autogenerated libtool wrappers, so leave it out on Windows.
+    if test "x$ac_cv_have_decl__WIN32" != "xyes" ; then
+        DESIRED_FLAGS="$DESIRED_FLAGS -Wmissing-noreturn"
+    fi
 
     for flag in $DESIRED_FLAGS ; do
         AC_MSG_CHECKING([whether $CC accepts $flag])