check for regex.h; resolves bug #2337486

2 files changed, 4 insertions, 1 deletions

diff --git a/configure.in b/configure.in
index 969c515..c03e258 100644
--- a/configure.in
+++ b/configure.in
@@ -84,7 +84,8 @@ fi
 AC_FUNC_ALLOCA
 AC_HEADER_STDC
 AC_HEADER_SYS_WAIT
-AC_CHECK_HEADERS([inttypes.h libintl.h limits.h locale.h malloc.h netinet/in.h stddef.h stdlib.h string.h strings.h unistd.h])
+AC_CHECK_HEADERS([inttypes.h libintl.h limits.h locale.h malloc.h
+netinet/in.h stddef.h stdlib.h string.h strings.h unistd.h regex.h])
 AC_CHECK_LIB(m, log10)
 
 # The test test-pthread uses libpthread, so we check for it here, but
diff --git a/flexdef.h b/flexdef.h
index d038952..7282711 100644
--- a/flexdef.h
+++ b/flexdef.h
@@ -91,7 +91,9 @@ char *alloca ();
 #define true 1
 #define false 0
 #endif
+#ifdef HAVE_REGEX_H
 #include <regex.h>
+#endif
 #include "flexint.h"
 
 /* We use gettext. So, when we write strings which should be translated, we mark them with _() */