1 files changed, 21 insertions, 0 deletions
diff --git a/aclocal.m4 b/aclocal.m4
new file mode 100644
index 0000000..2a636dd
--- /dev/null
+++ b/aclocal.m4
@@ -0,0 +1,21 @@
+AC_DEFUN(ZEPHYR_FUNC_REGCOMP,
+[AC_MSG_CHECKING(for working regcomp)
+AC_CACHE_VAL(zephyr_cv_func_regcomp,
+[AC_TRY_RUN([
+#include <sys/types.h>
+#include <regex.h>
+int main()
+{
+    regex_t reg;
+    int retval;
+    char errbuf[512];
+
+    retval = regcomp(&reg, "[Ff]rom:", REG_EXTENDED | REG_NOSUB);
+    exit(retval != 0);
+}
+], zephyr_cv_func_regcomp=yes, zephyr_cv_func_regcomp=no,
+   zephyr_cv_func_regcomp=no)])dnl
+AC_MSG_RESULT($zephyr_cv_func_regcomp)
+if test $zephyr_cv_func_regcomp = yes; then
+  AC_DEFINE(HAVE_REGCOMP)
+fi])