From 47ad9afcf38d91059dd23dc2e6f6c2d9d4c3ad80 Mon Sep 17 00:00:00 2001
From: Alexander Barton <alex@barton.de>
Date: Tue, 11 Sep 2012 14:32:17 +0200
Subject: [PATCH] configure.in: Update checks for required and optional
 features

Update checks for required and optional header files, data types,
and functions.
---
 configure.in | 42 +++++++++++++++++++++++-------------------
 1 file changed, 23 insertions(+), 19 deletions(-)

diff --git a/configure.in b/configure.in
index 0f0cac02..c7265964 100644
--- a/configure.in
+++ b/configure.in
@@ -107,25 +107,17 @@ AC_HEADER_STDC
 AC_HEADER_SYS_WAIT
 AC_HEADER_TIME
 
+# Required header files
 AC_CHECK_HEADERS([ \
-	ctype.h errno.h fcntl.h netdb.h netinet/in.h netinet/in_systm.h \
-	stdlib.h string.h strings.h sys/socket.h sys/time.h unistd.h \
+	fcntl.h inttypes.h netdb.h netinet/in.h netinet/in_systm.h stdlib.h \
+	string.h strings.h sys/socket.h sys/time.h unistd.h \
 	],,AC_MSG_ERROR([required C header missing!]))
 
+# Optional header files
 AC_CHECK_HEADERS([ \
-	arpa/inet.h ctype.h malloc.h netinet/ip.h stdbool.h stddef.h varargs.h \
-	],[],[],[[
-	#ifdef HAVE_SYS_TYPES_H
-		#include <sys/types.h>
-	#endif
-	#ifdef HAVE_SYS_SOCKET_H
-		#include <sys/socket.h>
-	#endif
-	#ifdef HAVE_NETINET_IN_H
-		#include <netinet/in.h>
-	#endif
-	]]
-)
+	arpa/inet.h malloc.h netinet/ip.h stdbool.h stddef.h stdint.h \
+	varargs.h \
+	])
 
 # -- Datatypes --
 
@@ -142,8 +134,14 @@ AC_TRY_COMPILE([
 	AC_MSG_RESULT(no)
 ])
 
+AC_TYPE_PID_T
 AC_TYPE_SIGNAL
 AC_TYPE_SIZE_T
+AC_TYPE_SSIZE_T
+AC_TYPE_UID_T
+AC_TYPE_UINT16_T
+AC_TYPE_UINT32_T
+AC_TYPE_UINT8_T
 
 AC_CHECK_MEMBER([struct sockaddr_in.sin_len], AC_DEFINE(HAVE_sockaddr_in_len),,
  [#include <arpa/inet.h>])
@@ -159,16 +157,22 @@ AC_CHECK_LIB(socket,bind)
 # -- Functions --
 
 AC_FUNC_FORK
+AC_FUNC_MALLOC
+AC_FUNC_REALLOC
 AC_FUNC_STRFTIME
 
+# Required functions
 AC_CHECK_FUNCS([ \
-	bind gethostbyaddr gethostbyname gethostname inet_ntoa \
-	setsid setsockopt socket strcasecmp waitpid],,
+	alarm dup2 endpwent gethostbyaddr gethostbyname gethostname \
+	gettimeofday inet_ntoa memmove memset setsid socket strcasecmp \
+	strchr strcspn strerror strncasecmp strrchr strspn strstr \
+	],,
 	AC_MSG_ERROR([required function missing!]))
 
+# Optional functions
 AC_CHECK_FUNCS([ \
-	gai_strerror getaddrinfo getnameinfo inet_aton sigaction \
-	sigprocmask snprintf vsnprintf strdup strlcpy strlcat strtok_r])
+	gai_strerror getaddrinfo getnameinfo inet_aton sigaction sigprocmask \
+	snprintf vsnprintf strdup strlcpy strlcat strtok_r waitpid])
 
 # -- Configuration options --
 
-- 
2.39.2