gistfile1.txt

diff --git a/configure b/configure
index f137cf1..13b04f0 100755
--- a/configure
+++ b/configure
@@ -6275,9 +6275,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
+#include <stdlib.h>
 #include <sys/types.h>
 #include <regex.h>
-main() {
+int main() {
 	regex_t patbuf;
 	exit (regcomp (&patbuf, "/hello/", 0) != 0);
 }
diff --git a/configure.ac b/configure.ac
index 7fc81d4..46a29d0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -447,6 +447,7 @@ if test no != "$with_posix_regex"; then
 	AC_CHECK_FUNCS(regcomp)
 	AC_MSG_CHECKING(if regcomp works)
 	AC_TRY_RUN([
+#include <stdlib.h>
 #include <sys/types.h>
 #include <regex.h>
 main() {