[sheepdog] [PATCH v2 1/3] modify configure.ac to build sheepdog on rhel5 environment

[Robin Dong]

From: Robin Dong <sanbai at taobao.com>

In our product machine we use rhel5 on 2.6.32-linux-kernel, but sheepdog can't build
on rhel5. It need some modification to do this.

1. old version autoconf does not support AM_SILENT_RULES() so replace it with check for shell.
2. use SIZEOF_SHORT/INT/LONG instead of AC_TYPE_INT16/32/64.
3. check header files such as sys/eventfd.h sys/signalfd.h etc.

Signed-off-by: Robin Dong <sanbai at taobao.com>
---
 Makefile.am  |    2 --
 configure.ac |   47 +++++++++++++++++++++++++++++++++--------------
 2 files changed, 33 insertions(+), 16 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 915ce54..81f4a09 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -11,8 +11,6 @@ MAINTAINERCLEANFILES	= Makefile.in aclocal.m4 configure depcomp	\
 			  autoheader automake autoconf config.status	\
 			  config.log
 
-dist_doc_DATA		= 
-
 sheepdogsysconfdir	= ${SHEEPDOGCONFDIR}
 
 sheepdogsysconf_DATA	= 
diff --git a/configure.ac b/configure.ac
index 83d90be..9e878f5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -16,8 +16,6 @@
 #
 
 # bootstrap / init
-AC_PREREQ([2.61])
-
 m4_define([sheepdog_version], [0.7.50])
 
 m4_define([git_version],
@@ -35,7 +33,19 @@ AC_CANONICAL_HOST
 
 AC_LANG([C])
 
-AM_SILENT_RULES([yes])
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES(yes)])
+
+if make --help 2>&1 | grep -q no-print-directory; then
+	AM_MAKEFLAGS="$AM_MAKEFLAGS --no-print-directory";
+fi
+
+if make --help 2>&1 | grep -q quiet; then
+	AM_MAKEFLAGS="$AM_MAKEFLAGS --quiet"
+fi
+
+if libtool --help 2>&1 | grep -q quiet; then
+	AM_LIBTOOLFLAGS="--quiet";
+fi
 
 m4_ifndef([PKG_PROG_PKG_CONFIG], AC_MSG_ERROR([pkg-config not found]))
 
@@ -96,19 +106,28 @@ AC_CHECK_HEADERS([urcu.h urcu/uatomic.h],,
 AC_C_CONST
 AC_TYPE_UID_T
 AC_C_INLINE
-AC_TYPE_INT16_T
-AC_TYPE_INT32_T
-AC_TYPE_INT64_T
-AC_TYPE_INT8_T
 AC_TYPE_SIZE_T
-AC_TYPE_SSIZE_T
 AC_HEADER_TIME
-AC_TYPE_UINT16_T
-AC_TYPE_UINT32_T
-AC_TYPE_UINT64_T
-AC_TYPE_UINT8_T
 AC_C_VOLATILE
 
+AC_CHECK_SIZEOF(short)
+AC_CHECK_SIZEOF(int)
+AC_CHECK_SIZEOF(long)
+AC_CHECK_SIZEOF(long long)
+SIZEOF_SHORT=$ac_cv_sizeof_short
+SIZEOF_INT=$ac_cv_sizeof_int
+SIZEOF_LONG=$ac_cv_sizeof_long
+SIZEOF_LONG_LONG=$ac_cv_sizeof_long_long
+AC_SUBST(SIZEOF_SHORT)
+AC_SUBST(SIZEOF_INT)
+AC_SUBST(SIZEOF_LONG)
+AC_SUBST(SIZEOF_LONG_LONG)
+
+# Checks for header files.
+AC_CHECK_HEADERS([sys/eventfd.h])
+AC_CHECK_HEADERS([sys/signalfd.h])
+AC_CHECK_HEADERS([sys/timerfd.h])
+
 # Checks for library functions.
 AC_FUNC_CLOSEDIR_VOID
 AC_FUNC_ERROR_AT_LINE
@@ -124,7 +143,7 @@ AC_FUNC_VPRINTF
 AC_CHECK_FUNCS([alarm alphasort atexit bzero dup2 endgrent endpwent fcntl \
 		getcwd getpeerucred getpeereid gettimeofday inet_ntoa memmove \
 		memset mkdir scandir select socket strcasecmp strchr strdup \
-		strerror strrchr strspn strstr])
+		strerror strrchr strspn strstr fallocate])
 
 AC_CONFIG_FILES([Makefile
 		dog/Makefile
@@ -431,7 +450,7 @@ AC_MSG_RESULT([  Features                 =${PACKAGE_FEATURES}])
 AC_MSG_RESULT([])
 AC_MSG_RESULT([$PACKAGE build info:])
 AC_MSG_RESULT([  Library SONAME           = ${SONAME}])
-LIB_MSG_RESULT(m4_shift(local_soname_list))dnl
+AC_MSG_RESULT(m4_shift(local_soname_list))
 AC_MSG_RESULT([  Default optimization     = ${OPT_CFLAGS}])
 AC_MSG_RESULT([  Default debug options    = ${GDB_CFLAGS}])
 AC_MSG_RESULT([  Extra compiler warnings  = ${EXTRA_WARNING}])
-- 
1.7.3.2