-AC_PREREQ(2.59)
-AC_INIT([userspace-rcu],[0.12.0],[mathieu dot desnoyers at efficios dot com], [], [http://liburcu.org/])
-
+dnl SPDX-License-Identifier: LGPL-2.1-only
+dnl
+dnl Copyright (C) 2021 EfficiOS, Inc.
+dnl
+dnl Process this file with autoconf to produce a configure script.
+
+# Project version information
+m4_define([urcu_version_major], [0])
+m4_define([urcu_version_minor], [12])
+m4_define([urcu_version_patch], [0])
+m4_define([urcu_version_dev_stage], [])
+m4_define([urcu_version], urcu_version_major[.]urcu_version_minor[.]urcu_version_patch[]urcu_version_dev_stage)
+
+# Library version information of "liburcu"
# Following the numbering scheme proposed by libtool for the library version
# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
-AC_SUBST([URCU_LIBRARY_VERSION], [7:0:1])
+m4_define([urcu_lib_version_current], [7])
+m4_define([urcu_lib_version_revision], [0])
+m4_define([urcu_lib_version_age], [1])
+m4_define([urcu_lib_version], urcu_lib_version_current[:]urcu_lib_version_revision[:]urcu_lib_version_age)
+
+
+## ##
+## Autoconf base setup ##
+## ##
+
+AC_PREREQ([2.69])
+AC_INIT([userspace-rcu],[urcu_version],[mathieu dot desnoyers at efficios dot com],[],[http://liburcu.org/])
AC_CONFIG_HEADERS([include/config.h include/urcu/config.h])
AC_CONFIG_AUX_DIR([config])
AC_CANONICAL_TARGET
AC_CANONICAL_HOST
-AM_INIT_AUTOMAKE([1.12 foreign dist-bzip2 no-dist-gzip nostdinc])
+
+## ##
+## Automake base setup ##
+## ##
+
+AM_INIT_AUTOMAKE([1.12 foreign dist-bzip2 no-dist-gzip nostdinc -Wall -Wno-portability -Werror])
AM_MAINTAINER_MODE([enable])
-# Enable silent rules if available (Introduced in AM 1.11)
-m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+# Enable silent rules by default
+AM_SILENT_RULES([yes])
+
+
+## ##
+## OS and Arch specific defaults ##
+## ##
+
+AS_CASE([$host],
+ [*-cygwin*], [LT_NO_UNDEFINED="-no-undefined"]
+)
+
+
+## ##
+## C compiler checks ##
+## ##
+
+# Choose the C compiler
+AC_PROG_CC
+# AC_PROG_CC_STDC was merged in AC_PROG_CC in autoconf 2.70
+m4_version_prereq([2.70], [], [AC_PROG_CC_STDC])
+
+# Make sure the C compiler supports C99
+AS_IF([test "$ac_cv_prog_cc_c99" = "no"], [AC_MSG_ERROR([The compiler does not support C99])])
+
+# Enable available system extensions and LFS support
+AC_USE_SYSTEM_EXTENSIONS
+AC_SYS_LARGEFILE
+
+# Make sure the C compiler supports __attribute__
+AX_C___ATTRIBUTE__
+AS_IF([test "x$ax_cv___attribute__" != "xyes"],
+ [AC_MSG_ERROR([The compiler does not support __attribute__ extensions])])
+
+# Make sure we have pthread support
+AX_PTHREAD([], [AC_MSG_ERROR([Could not configure pthread support])])
+
+# Make sure the C compiler supports weak symbols
+AX_SYS_WEAK_ALIAS
+AS_IF([test "x$ax_cv_sys_weak_alias" = "xno"],
+ [AC_MSG_ERROR([Your platform doesn't support weak symbols.])])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_C_INLINE
+AC_C_TYPEOF
+AC_TYPE_INT32_T
+AC_TYPE_PID_T
+AC_TYPE_SIZE_T
+AC_TYPE_SSIZE_T
+AC_TYPE_UINT16_T
+AC_TYPE_UINT32_T
+AC_TYPE_UINT64_T
+AC_TYPE_UINT8_T
+
+
+## ##
+## Header checks ##
+## ##
+
+AC_HEADER_STDBOOL
+AC_CHECK_HEADERS([ \
+ limits.h \
+ stddef.h \
+ sys/param.h \
+ sys/time.h \
+])
+
+
+## ##
+## Programs checks ##
+## ##
+
+AC_PROG_AWK
+AC_PROG_GREP
+AC_PROG_MAKE_SET
+AC_CHECK_PROGS(NPROC, [nproc gnproc])
+AC_CHECK_PROG(GETCONF, [getconf])
+AS_IF([test "x$NPROC" != "x"],
+ [NPROC_CMD=$NPROC],
+ [AS_IF([test "x$GETCONF" != "x"],
+ [NPROC_CMD="$GETCONF _NPROCESSORS_ONLN"],
+ [NPROC_CMD="echo 1"]
+ )]
+)
+AC_SUBST([NPROC_CMD], [$NPROC_CMD])
+
+# Initialize and configure libtool
+LT_INIT
-AC_REQUIRE_AUX_FILE([tap-driver.sh])
AH_TEMPLATE([CONFIG_RCU_SMP], [Enable SMP support. With SMP support enabled, uniprocessors are also supported. With SMP support disabled, UP systems work fine, but the behavior of SMP systems is undefined.])
AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.])
[def_compiler_tls=$enableval],
[def_compiler_tls="yes"])
-# Checks for C compiler
-AC_USE_SYSTEM_EXTENSIONS
-AC_PROG_CC
-AC_PROG_CC_STDC
-
AS_IF([test "x$def_compiler_tls" = "xyes"], AC_DEFINE([CONFIG_RCU_TLS], [1]), [:])
-# Checks for programs.
-AC_PROG_AWK
-AC_PROG_MAKE_SET
-AC_CHECK_PROGS(NPROC, [nproc gnproc])
-AC_CHECK_PROGS(GETCONF, [getconf])
-AS_IF([test "x$NPROC" != "x"],
- [NPROC_CMD=$NPROC],
- [AS_IF([test "x$GETCONF" != "x"],
- [NPROC_CMD="$GETCONF _NPROCESSORS_ONLN"],
- [NPROC_CMD="echo 1"]
- )]
-)
-AC_SUBST([NPROC_CMD], [$NPROC_CMD])
-
-LT_INIT
-
-# Checks for typedefs, structures, and compiler characteristics.
-AC_C_INLINE
-AC_TYPE_PID_T
-AC_TYPE_SIZE_T
-AC_TYPE_SSIZE_T
-AC_TYPE_UINT16_T
-AC_TYPE_INT32_T
-AC_TYPE_UINT32_T
-AC_TYPE_UINT64_T
-AC_TYPE_UINT8_T
-
-AX_C___ATTRIBUTE__
-AS_IF([test "x$ax_cv___attribute__" = "xyes"],
- [:],
- [AC_MSG_ERROR([The compiler does not support __attribute__ extensions])])
-
-AX_PTHREAD(,[AC_MSG_ERROR([Could not configure pthreads support])])
AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
# AC_FUNC_MALLOC causes problems when cross-compiling.
#AC_FUNC_MALLOC
-# Check for headers
-AC_HEADER_STDBOOL
-AC_CHECK_HEADERS([ \
- limits.h \
- stddef.h \
- sys/param.h \
- sys/time.h \
-])
-
-AS_CASE([$host],[*-cygwin*],
- [AM_CONDITIONAL(USE_CYGWIN, true)],
- [AM_CONDITIONAL(USE_CYGWIN, false)]
-)
-
-AS_IF([test "$host_cpu" = "armv7l"],[
- AM_CFLAGS="$AM_CFLAGS -mcpu=cortex-a9 -mtune=cortex-a9 -O1"
-])
-
# Search for clock_gettime
AC_SEARCH_LIBS([clock_gettime], [rt], [
AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1])
])
])
+## ##
+## Substitute variables for use in Makefile.am ##
+## ##
+
+# Library versions for libtool
+AC_SUBST([URCU_LIBRARY_VERSION], [urcu_lib_version])
+
+AC_SUBST(LT_NO_UNDEFINED)
+
AM_CPPFLAGS="-include config.h"
AC_SUBST(AM_CPPFLAGS)
projects / urcu.git / blobdiff