From bd244987b9175ae3edf7c5f7417340a0a37427a8 Mon Sep 17 00:00:00 2001
From: pjk <pjk>
Date: Wed, 28 Apr 2004 20:59:26 +0000
Subject: [PATCH] configure.ac: check for presence / add libgnugetopt to
 support   getopt_long on FreeBSD

algorithm.c, alloc.h: Wrap includes of alloca.h with #ifdef
  HAVE_ALLOCA_H.  Some platforms (FreeBSD for example) have alloca in
  stdlib.h... Autoconf detects this in AC_FUNC_ALLOCA
---
 configure.ac    | 1 +
 src/algorithm.c | 3 +++
 src/alloc.h     | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/configure.ac b/configure.ac
index 5015f73a..69ac564b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -30,6 +30,7 @@ AC_CHECK_LIB(gslcblas,main,,AC_MSG_ERROR([You must install libgslcblas]))
 AC_CHECK_LIB(gsl, gsl_cdf_chisq_Q,,
 	AC_MSG_ERROR([You must install libgsl version 1.4 or later]))
 
+AC_CHECK_LIB(gnugetopt,getopt_long)
 AC_CHECK_FUNC(getopt_long,,
 	AC_MSG_ERROR(`This application depends upon getopt_long'))
 
diff --git a/src/algorithm.c b/src/algorithm.c
index 89e813de..230b1437 100644
--- a/src/algorithm.c
+++ b/src/algorithm.c
@@ -511,7 +511,10 @@ lexicographical_compare_3way (const void *array1, size_t count1,
    Engineering a sort function; Jon Bentley and M. Douglas McIlroy;
    Software - Practice and Experience; Vol. 23 (11), 1249-1265, 1993.  */
 
+#ifdef HAVE_ALLOCA_H
 #include <alloca.h>
+#endif
+
 #include <limits.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/src/alloc.h b/src/alloc.h
index b1b34d0f..b44f0f38 100644
--- a/src/alloc.h
+++ b/src/alloc.h
@@ -30,7 +30,9 @@ char *xstrdup (const char *s);
 
 /* alloca() wrapper functions. */
 #if defined (HAVE_ALLOCA) || defined (C_ALLOCA)
+#ifdef HAVE_ALLOCA_H
 #include <alloca.h>
+#endif
 #define local_alloc(X) alloca (X)
 #define local_free(P) ((void) 0)
 #else
-- 
2.30.2