1 files changed, 27 insertions, 0 deletions

diff --git a/ac/check-type.m4 b/ac/check-type.m4
new file mode 100644
index 0000000..e65ea03
--- /dev/null
+++ b/ac/check-type.m4
@@ -0,0 +1,27 @@
+dnl SYLPHEED_CHECK_TYPE(TYPE, DEFAULT [, INCLUDES, COMMENT])
+dnl
+dnl Like AC_CHECK_TYPE, but in addition to `sys/types.h', `stdlib.h' and
+dnl `stddef.h' checks files included by INCLUDES, which should be a
+dnl series of #include statements.  If TYPE is not defined, define it
+dnl to DEFAULT.
+dnl
+AC_DEFUN([SYLPHEED_CHECK_TYPE],
+[AC_REQUIRE([AC_HEADER_STDC])dnl
+AC_MSG_CHECKING(for $1)
+AC_CACHE_VAL(sylpheed_cv_type_$1,
+[AC_TRY_COMPILE([
+#include <sys/types.h>
+#if STDC_HEADERS
+#include <stdlib.h>
+#include <stddef.h>
+#endif
+$3
+], [
+#undef $1
+int a = sizeof($1);
+], sylpheed_cv_type_$1=yes, sylpheed_cv_type_$1=no)])dnl
+AC_MSG_RESULT($sylpheed_cv_type_$1)
+if test $sylpheed_cv_type_$1 = no; then
+  AC_DEFINE($1, $2, $4)
+fi
+])