-AC_PREREQ(2.59)
-AC_INIT([userspace-rcu],[0.10.0-pre],[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], [15])
+m4_define([urcu_version_patch], [0])
+m4_define([urcu_version_dev_stage], [-pre])
+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], [5:0:1])
+m4_define([urcu_lib_version_current], [9])
+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([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])])
-
-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_HAVE_FENCE], [Defined when on a system that has memory fence instructions.])
-AH_TEMPLATE([CONFIG_RCU_HAVE_FUTEX], [Defined when on a system with futex support.])
-AH_TEMPLATE([CONFIG_RCU_COMPAT_ARCH], [Compatibility mode for i386 which lacks cmpxchg instruction.])
-AH_TEMPLATE([CONFIG_RCU_ARM_HAVE_DMB], [Use the dmb instruction if available for use on ARM.])
-AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.])
-AH_TEMPLATE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [clock_gettime() is detected.])
-AH_TEMPLATE([CONFIG_RCU_FORCE_SYS_MEMBARRIER], [Require the operating system to support the membarrier system call for default and bulletproof flavors.])
-AH_TEMPLATE([CONFIG_RCU_DEBUG], [Enable internal debugging self-checks. Introduce performance penalty.])
-
-# Allow requiring the operating system to support the membarrier system
-# call. Applies to default and bulletproof flavors.
-AC_ARG_ENABLE([sys-membarrier-fallback],
- AS_HELP_STRING([--disable-sys-membarrier-fallback], [Abort if sys-membarrier is needed but not available rather than using a fallback.]),
- [def_sys_membarrier_fallback=$enableval],
- [def_sys_membarrier_fallback="yes"])
-AS_IF([test "x$def_sys_membarrier_fallback" != "xyes"], [AC_DEFINE([CONFIG_RCU_FORCE_SYS_MEMBARRIER], [1])])
-
-# Allow overriding storage used for TLS variables.
-AC_ARG_ENABLE([compiler-tls],
- AS_HELP_STRING([--disable-compiler-tls], [Use pthread_getspecific() to emulate Thread Local Storage (TLS) variables.]),
- [def_compiler_tls=$enableval],
- [def_compiler_tls="yes"])
-
-# If not overridden, use ax_tls.m4 to check if TLS is available.
-AS_IF([test "x$def_compiler_tls" = "xyes"],
- [AX_TLS([def_tls_detect=$ac_cv_tls], [:])],
- [:])
-
-AS_IF([test "x$def_tls_detect" = "x"],
- [:],
- [AC_DEFINE_UNQUOTED([CONFIG_RCU_TLS], $def_tls_detect)])
-
-# Checks for C compiler
-AC_USE_SYSTEM_EXTENSIONS
-AC_PROG_CC
-AC_PROG_CC_STDC
+# Enable silent rules by default
+AM_SILENT_RULES([yes])
-# Checks for programs.
-AC_PROG_AWK
-AC_PROG_MAKE_SET
-AC_CHECK_PROGS(NPROC, [nproc gnproc])
-AC_CHECK_PROGS(GETCONF, [getconf])
-AS_IF([test "x$NPROC" != "x"],
- [NPROC_CMD=$NPROC],
- [AS_IF([test "x$GETCONF" != "x"],
- [NPROC_CMD="$GETCONF _NPROCESSORS_ONLN"],
- [NPROC_CMD="echo 1"]
- )]
+
+## ##
+## OS and Arch specific defaults ##
+## ##
+
+AS_CASE([$host],
+ [*-cygwin* | *-msys*], [LT_NO_UNDEFINED="-no-undefined"]
)
-AC_SUBST([NPROC_CMD], [$NPROC_CMD])
-LT_INIT
+
+## ##
+## C compiler checks ##
+## ##
+
+# Choose the C compiler
+AC_PROG_CC
+# AC_PROG_CC_STDC was merged in AC_PROG_CC in autoconf 2.70
+m4_version_prereq([2.70], [], [AC_PROG_CC_STDC])
+
+# Make sure the C compiler supports C99
+AS_IF([test "$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
+
+# Check if the selected C compiler supports atomic builtins
+AE_CC_ATOMIC_BUILTINS
+
+
+## ##
+## C++ compiler checks ##
+## ##
+
+# Require a C++11 compiler without GNU extensions (-std=c++11)
+AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory])
+
+# Make sure the C compiler supports __attribute__
+AX_C___ATTRIBUTE__
+AS_IF([test "x$ax_cv___attribute__" != "xyes"],
+ [AC_MSG_ERROR([The compiler does not support __attribute__ extensions])])
+
+# Make sure we have pthread support
+AX_PTHREAD([], [AC_MSG_ERROR([Could not configure pthread support])])
# Checks for typedefs, structures, and compiler characteristics.
AC_C_INLINE
+AC_C_TYPEOF
+AC_TYPE_INT32_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_TYPE_UINT16_T
-AC_TYPE_INT32_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_TYPE_UINT8_T
-AX_C___ATTRIBUTE__
-AS_IF([test "x$ax_cv___attribute__" = "xyes"],
- [:],
- [AC_MSG_ERROR([The compiler does not support __attribute__ extensions])])
+# Detect warning flags supported by the C compiler and append them to
+# WARN_CFLAGS.
+m4_define([WARN_FLAGS_LIST], [ dnl
+ -Wall dnl
+ -Wextra dnl
+ -Wmissing-prototypes dnl
+ -Wmissing-declarations dnl
+ -Wnull-dereference dnl
+ -Wundef dnl
+ -Wshadow dnl
+ -Wjump-misses-init dnl
+ -Wsuggest-attribute=format dnl
+ -Wtautological-constant-out-of-range-compare dnl
+ -Wnested-externs dnl
+ -Wwrite-strings dnl
+ -Wformat=2 dnl
+ -Wstrict-aliasing dnl
+ -Wmissing-noreturn dnl
+ -Winit-self dnl
+ -Wduplicated-cond dnl
+ -Wduplicated-branches dnl
+ -Wlogical-op dnl
+ dnl
+ dnl-Wredundant-decls dnl
+ -Wno-null-dereference dnl
+])
+
+# Pass -Werror as an extra flag during the test: this is needed to make the
+# -Wunknown-warning-option diagnostic fatal with clang.
+AC_LANG_PUSH([C])
+AX_APPEND_COMPILE_FLAGS([WARN_FLAGS_LIST], [WARN_CFLAGS], [-Werror])
+AC_LANG_POP([C])
+
+AC_LANG_PUSH([C++])
+AX_APPEND_COMPILE_FLAGS([WARN_FLAGS_LIST], [WARN_CXXFLAGS], [-Werror])
+AC_LANG_POP([C++])
+
+AE_IF_FEATURE_ENABLED([Werror], [WARN_CFLAGS="${WARN_CFLAGS} -Werror"])
+AE_IF_FEATURE_ENABLED([Werror], [WARN_CXXFLAGS="${WARN_CXXFLAGS} -Werror"])
+
+
+## ##
+## Header checks ##
+## ##
+
+AC_HEADER_STDBOOL
+AC_CHECK_HEADERS([ \
+ limits.h \
+ stddef.h \
+ sys/param.h \
+ sys/time.h \
+])
-AX_PTHREAD(,[AC_MSG_ERROR([Could not configure pthreads support])])
-AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
+## ##
+## Programs checks ##
+## ##
+
+AC_PROG_AWK
+AC_PROG_GREP
+AC_PROG_MAKE_SET
+AC_CHECK_PROGS(NPROC, [nproc gnproc])
+AC_CHECK_PROGS(GETCONF, [getconf])
+AC_CHECK_PROGS(TIME, [time])
+
+# Initialize and configure libtool
+LT_INIT
+
+
+## ##
+## Library checks ##
+## ##
# Checks for library functions.
AC_FUNC_MMAP
munmap \
rand_r \
sched_getcpu \
+ sched_setaffinity \
strerror \
strtoul \
sysconf \
# AC_FUNC_MALLOC causes problems when cross-compiling.
#AC_FUNC_MALLOC
-# Check for headers
-AC_HEADER_STDBOOL
-AC_CHECK_HEADERS([ \
- limits.h \
- stddef.h \
- sys/param.h \
- sys/time.h \
+# Search for clock_gettime() in -lrt
+AC_SEARCH_LIBS([clock_gettime], [rt], [
+ AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1], [clock_gettime() is detected.])
])
-# Find arch type
-AS_CASE([$host_cpu],
- [k1om], [ARCHTYPE="x86"],
- [i386], [ARCHTYPE="x86" && SUBARCHTYPE="x86compat"],
- [i486], [ARCHTYPE="x86"],
- [i586], [ARCHTYPE="x86"],
- [i686], [ARCHTYPE="x86"],
- [amd64], [ARCHTYPE="x86"],
- [x86_64], [ARCHTYPE="x86"],
- [powerpc], [ARCHTYPE="ppc"],
- [ppc64], [ARCHTYPE="ppc"],
- [powerpc64], [ARCHTYPE="ppc"],
- [powerpc64le], [ARCHTYPE="ppc"],
- [ppc], [ARCHTYPE="ppc"],
- [s390], [ARCHTYPE="s390"],
- [s390x], [ARCHTYPE="s390"],
- [sparc], [ARCHTYPE="sparc64"],
- [sparc64], [ARCHTYPE="sparc64"],
- [alpha*], [ARCHTYPE="alpha"],
- [ia64], [ARCHTYPE="ia64"],
- [arm*], [ARCHTYPE="arm"],
- [aarch64*], [ARCHTYPE="aarch64"],
- [mips*], [ARCHTYPE="mips"],
- [nios2*], [ARCHTYPE="nios2"],
- [tile*], [ARCHTYPE="tile"],
- [hppa*], [ARCHTYPE="hppa"],
- [ARCHTYPE="unknown"]
-)
-AS_CASE([$host],[*-cygwin*],
- [AM_CONDITIONAL(USE_CYGWIN, true)],
- [AM_CONDITIONAL(USE_CYGWIN, false)]
-)
+## ##
+## Optional features selection ##
+## ##
+
+# Allow to fallback to FIXME if the membarrier syscall is unavailable on the
+# running kernel, when disabled, abort if the syscall is unavailable. Applies
+# to default and bulletproof flavors.
+# Enabled by default
+AE_FEATURE_DEFAULT_ENABLE
+AE_FEATURE([sys-membarrier-fallback], [Abort if sys-membarrier is needed but not available rather than using a fallback.])
-AC_SUBST(ARCHTYPE)
-AC_SUBST(SUBARCHTYPE)
+# Use compiler Thread Local Storage, when disabled use pthread_getspecific() to emulate TLS.
+# Enabled by default
+AE_FEATURE_DEFAULT_ENABLE
+AE_FEATURE([compiler-tls], [Use pthread_getspecific() to emulate Thread Local Storage (TLS) variables.])
-UATOMICSRC=include/urcu/uatomic/$ARCHTYPE.h
-ARCHSRC=include/urcu/arch/$ARCHTYPE.h
+# smp-support configure option
+# Enabled by default
+AE_FEATURE_DEFAULT_ENABLE
+AE_FEATURE([smp-support], [Disable SMP support. Warning: only use this on uniprocessor systems.])
-AS_IF([test "x$SUBARCHTYPE" = xx86compat],[
- AC_DEFINE([CONFIG_RCU_COMPAT_ARCH], [1])
+# RCU debugging option
+# Disabled by default
+AE_FEATURE_DEFAULT_DISABLE
+AE_FEATURE([rcu-debug], [Enable internal debugging self-checks. Introduces a performance penalty.])
+
+# rculfhash iterator debugging
+# Disabled by default
+AE_FEATURE_DEFAULT_DISABLE
+AE_FEATURE([cds-lfht-iter-debug], [Enable extra debugging checks for lock-free hash table iterator traversal. Alters the rculfhash ABI. Make sure to compile both library and application with matching configuration.])
+
+# Use compiler atomic builtins, when disabled use our legacy uatomic implementation.
+# Disabled by default
+AE_FEATURE_DEFAULT_DISABLE
+AE_FEATURE([compiler-atomic-builtins], [Enable the use of compiler atomic builtins.])
+
+# emit legacy memory barriers
+# Enable by default
+AE_FEATURE_DEFAULT_ENABLE
+AE_FEATURE([legacy-mb], [Disable legacy memory barriers.])
+
+# When given, add -Werror to WARN_CFLAGS and WARN_CXXFLAGS.
+# Disabled by default
+AE_FEATURE_DEFAULT_DISABLE
+AE_FEATURE([Werror],[Treat compiler warnings as errors.])
+
+## ##
+## Set defines for optional features conditionnals in the source code ##
+## ##
+
+AE_IF_FEATURE_DISABLED([sys-membarrier-fallback], [
+ AC_DEFINE([CONFIG_RCU_FORCE_SYS_MEMBARRIER], [1], [Require the operating system to support the membarrier system call for default and bulletproof flavors.])
])
-AS_IF([test "$host_cpu" = "armv7l"],[
- AM_CFLAGS="$AM_CFLAGS -mcpu=cortex-a9 -mtune=cortex-a9 -O1"
+AE_IF_FEATURE_ENABLED([compiler-tls], [
+ AC_DEFINE([CONFIG_RCU_TLS], [1], [Use compiler provided Thread Local Storage.])
])
-# ARM-specific checks
-AS_IF([test "x$ARCHTYPE" = "xarm"],[
- AC_MSG_CHECKING([for dmb instruction])
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
- int main()
- {
- asm volatile("dmb":::"memory");
- return 0;
- }
- ]])
- ],[
- AC_MSG_RESULT([yes])
- AC_DEFINE([CONFIG_RCU_ARM_HAVE_DMB], [1])
- ],[
- AC_MSG_RESULT([no])
- ])
+AE_IF_FEATURE_ENABLED([smp-support], [
+ AC_DEFINE([CONFIG_RCU_SMP], [1], [Enable SMP support. With SMP support enabled, uniprocessors are also supported. With SMP support disabled, UP systems work fine, but the behavior of SMP systems is undefined.])
])
-# Tile-specific checks
-AS_IF([echo "$host_cpu" | grep "^tile"],[
- AC_MSG_CHECKING([for Tile architecture type])
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
- #ifndef __tilegx__
- #error
- #endif
- ]])
- ],[
- AC_MSG_RESULT([ok])
- ],[
- AC_MSG_FAILURE([URCU has only been tested on the TileGx architecture. For other Tile* architectures, please run the tests first and report the results to the maintainer so that proper support can be added.])
- ])
+AE_IF_FEATURE_ENABLED([rcu-debug], [
+ AC_DEFINE([CONFIG_RCU_DEBUG], [1], [Enable internal debugging self-checks. Introduces a performance penalty.])
])
-# x86-specific checks
-AS_IF([test "x$ARCHTYPE" = "xx86"],[
- AC_MSG_CHECKING([if architecture really supports the mfence instruction])
- #For now, using lock; addl compatibility mode even for i686, because the
- #Pentium III is seen as a i686, but lacks mfence instruction.
- #Only using fence for x86_64.
- #
- #k1om is the name for the Intel MIC family (Xeon Phi). It is an x86_64
- #variant but lacks fence instructions.
- AS_IF([test "x$host_cpu" != "xi386" -a "x$host_cpu" != "xi486" -a "x$host_cpu" != "xi586" -a "x$host_cpu" != "xi686" -a "x$host_vendor" != "xk1om" -a "x$host_cpu" != "xk1om"],[
- AC_MSG_RESULT([yes])
- AC_DEFINE([CONFIG_RCU_HAVE_FENCE], [1])
- config_rcu_have_fence=yes
- ],[
- AC_MSG_RESULT([no])
- config_rcu_have_fence=no
- ])
+AE_IF_FEATURE_ENABLED([cds-lfht-iter-debug], [
+ AC_DEFINE([CONFIG_CDS_LFHT_ITER_DEBUG], [1], [Enable extra debugging checks for lock-free hash table iterator traversal. Alters the rculfhash ABI. Make sure to compile both library and application with matching configuration.])
])
-# Check if sys_futex() is available
-AC_MSG_CHECKING([for sys_futex()])
-AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
- #include <sys/syscall.h>
- #ifndef __NR_futex
- #error "futexes not available"
- #endif
- ]])
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE([CONFIG_RCU_HAVE_FUTEX], [1])
- compat_futex_test=0
-],[
- AC_MSG_RESULT([no])
- compat_futex_test=1
+AE_IF_FEATURE_ENABLED([compiler-atomic-builtins], [
+ AC_DEFINE([CONFIG_RCU_USE_ATOMIC_BUILTINS], [1], [Use compiler atomic builtins.])
])
-# Search for clock_gettime
-AC_SEARCH_LIBS([clock_gettime], [rt], [
- AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1])
- config_rcu_have_clock_gettime=yes
-], [])
+AE_IF_FEATURE_ENABLED([legacy-mb], [
+ AC_DEFINE([CONFIG_RCU_EMIT_LEGACY_MB], [1], [Emit legacy memory barriers that were documented in the APIs.])
+])
-AM_CONDITIONAL([COMPAT_FUTEX], [test "x$compat_futex_test" = "x1"])
-AM_CONDITIONAL([COMPAT_ARCH], [test "x$SUBARCHTYPE" = "xx86compat"])
-AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
+## ##
+## Set automake variables for optional feature conditionnals in Makefile.am ##
+## ##
-# smp-support configure option
-AC_ARG_ENABLE([smp-support],
- AS_HELP_STRING([--disable-smp-support], [Disable SMP support. Warning: only use this on uniprocessor systems. [default=enabled]]),
- [def_smp_support=$enableval],
- [def_smp_support="yes"])
-AS_IF([test "x$def_smp_support" = "xyes"], [AC_DEFINE([CONFIG_RCU_SMP], [1])])
+# Building the examples requires the shared libraries to be enabled
+AM_CONDITIONAL([ENABLE_EXAMPLES], AE_IS_FEATURE_ENABLED([shared]))
-# RCU debugging option
-AC_ARG_ENABLE([rcu-debug],
- AS_HELP_STRING([--enable-rcu-debug], [Enable internal debugging
- self-checks. Introduce performance penalty.]))
-AS_IF([test "x$enable_rcu_debug" = "xyes"], [
- AC_DEFINE([CONFIG_RCU_DEBUG], [1])
-])
-# From the sched_setaffinity(2)'s man page:
-# ~~~~
-# The CPU affinity system calls were introduced in Linux kernel 2.5.8.
-# The library interfaces were introduced in glibc 2.3. Initially, the
-# glibc interfaces included a cpusetsize argument. In glibc 2.3.3,
-# the cpuset size argument was removed, but this argument was
-# restored in glibc 2.3.4.
-# ~~~~
-
-# In addition to that, some vendors ported the system call to 2.4
-# kernels.
-
-# Furthermore, when the function first appeared, the MASK argument was
-# an unsigned long pointer, while later it was made into a cpu_set_t
-# pointer. Systems that have the cpu_set_t version also should have
-# the CPU_ZERO, CPU_SET, etc. macros.
-
-# All this mess means we have to cater for at least 3 different
-# sched_setaffinity prototypes:
-
-# ~~~~
-# int sched_setaffinity (pid_t pid, unsigned int len, unsigned long *mask);
-# int sched_setaffinity (pid_t __pid, size_t __cpusetsize, const cpu_set_t *__cpuset);
-# int sched_setaffinity (pid_t __pid, const cpu_set_t *__mask);
-# ~~~~
-
-AC_CHECK_TYPES([cpu_set_t],
- [have_cpu_set_t="yes"],
- [have_cpu_set_t="no"],
- [#include <sched.h>])
-
-# Confirm that we have CPU_ZERO, and it actually works.
-AC_MSG_CHECKING([whether CPU_ZERO works])
-AH_TEMPLATE([HAVE_CPU_ZERO], [Defined to 1 if we have CPU_ZERO and it works])
-AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
- #include <sched.h>
- int main()
- {
- cpu_set_t foo; CPU_ZERO(&foo);
- return 0;
- }
- ]])
-],[
- AC_DEFINE(HAVE_CPU_ZERO, 1)
- AC_MSG_RESULT([yes])
-],[
- AC_MSG_RESULT([no])
-])
+## ##
+## Check for optional features dependencies ##
+## ##
-# Confirm that we have CPU_SET, and it actually works.
-AC_MSG_CHECKING([whether CPU_SET works])
-AH_TEMPLATE([HAVE_CPU_SET], [Defined to 1 if we have CPU_SET and it works])
-AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
- #include <sched.h>
- int main()
- {
- cpu_set_t foo, mask; CPU_SET(0, &foo);
- return 0;
- }
- ]])
-],[
- AC_DEFINE(HAVE_CPU_SET, 1)
- AC_MSG_RESULT([yes])
-],[
- AC_MSG_RESULT([no])
-])
-# First check if the function is available at all.
-AC_CHECK_FUNCS([sched_setaffinity],[
- # Okay, we have it. Check if also have cpu_set_t. If we don't,
- # then we have the first version using unsigned long, and no
- # CPU_ZERO, etc. macros. If we do have cpu_set_t, we may have the
- # version with 2 or 3 arguments. In that case, CPU_ZERO, etc.,
- # should also be present, but we confirm nonetheless.
-
- AS_IF([test "x$have_cpu_set_t" = "xyes"], [
- # We do have it.
- # Check how many arguments does sched_setaffinity take.
- # Should be 3 or 2.
- AC_MSG_CHECKING([how many arguments sched_setaffinity takes])
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
- #include <sched.h>
- int main()
- {
- cpu_set_t foo;
- sched_setaffinity(0, sizeof (foo), &foo);
- return 0;
- }
- ]])
- ],
- [sched_set_affinity_args=3],
- [sched_set_affinity_args=2])
- AC_DEFINE_UNQUOTED(SCHED_SETAFFINITY_ARGS,
- $sched_set_affinity_args,
- [Defined to sched_setaffinity's number of arguments.])
- AC_MSG_RESULT([$sched_set_affinity_args])
- ],[
- # No cpu_set_t, always 3 args.
- AC_DEFINE(SCHED_SETAFFINITY_ARGS, 3)
- ])
+AE_IF_FEATURE_ENABLED([compiler-atomic-builtins], [
+ AS_IF([test "x$ae_cv_cc_atomic_builtins" != xyes], [
+ AC_MSG_ERROR([The compiler does not support atomic builtins.])
+ ])
])
-AM_CPPFLAGS="-include config.h"
+## ##
+## Substitute variables for use in Makefile.am ##
+## ##
+
+# Library versions for libtool
+AC_SUBST([URCU_LIBRARY_VERSION], [urcu_lib_version])
+
+AC_SUBST(LT_NO_UNDEFINED)
+
+# The order in which the include folders are searched is important.
+# The top_builddir should always be searched first in the event that a build
+# time generated file is included.
+AM_CPPFLAGS="-I\$(top_builddir)/include -I\$(top_srcdir)/include -include config.h"
AC_SUBST(AM_CPPFLAGS)
-AM_CFLAGS="-Wall $AM_CFLAGS"
+AM_CFLAGS="$WARN_CFLAGS $PTHREAD_CFLAGS"
AC_SUBST(AM_CFLAGS)
-AC_CONFIG_LINKS([
- include/urcu/arch.h:$ARCHSRC
- include/urcu/uatomic.h:$UATOMICSRC
-])
+AM_CXXFLAGS="$WARN_CXXFLAGS $PTHREAD_CFLAGS"
+AC_SUBST(AM_CXXFLAGS)
+
+
+## ##
+## Output files generated by configure ##
+## ##
+
AC_CONFIG_FILES([
Makefile
doc/Makefile
doc/examples/Makefile
+ extras/Makefile
include/Makefile
src/Makefile
tests/Makefile
tests/unit/Makefile
tests/benchmark/Makefile
tests/regression/Makefile
- tests/regression/regression_tests
tests/utils/Makefile
src/liburcu.pc
src/liburcu-bp.pc
src/liburcu-cds.pc
src/liburcu-qsbr.pc
src/liburcu-mb.pc
- src/liburcu-signal.pc
+ src/liburcu-memb.pc
])
+
+AC_CONFIG_FILES([tests/utils/env.sh],[chmod +x tests/utils/env.sh])
+
+
AC_OUTPUT
#
# Mini-report on what will be built.
#
-PPRINT_INIT
-PPRINT_SET_INDENT(1)
-PPRINT_SET_TS(38)
+AE_PPRINT_INIT
+AE_PPRINT_SET_INDENT(1)
+AE_PPRINT_SET_TS(38)
AS_ECHO
-AS_ECHO("${PPRINT_COLOR_BLDBLU}Userspace-RCU $PACKAGE_VERSION${PPRINT_COLOR_RST}")
+AS_ECHO("${AE_PPRINT_COLOR_BLDBLU}Userspace-RCU $PACKAGE_VERSION${AE_PPRINT_COLOR_RST}")
AS_ECHO
-PPRINT_SUBTITLE([Features])
+AE_PPRINT_SUBTITLE([Features])
-PPRINT_PROP_STRING([Target architecture], $host_cpu)
+AE_PPRINT_PROP_STRING([Target architecture], $host_cpu)
# SMP support enabled/disabled
-test "x$def_smp_support" = "xyes" && value=1 || value=0
-PPRINT_PROP_BOOL([SMP support], $value)
-
-# Memory fence support available
-test "x$config_rcu_have_fence" = "xyes" && value=1 || value=0
-PPRINT_PROP_BOOL([Memory fence instructions], $value)
-
-# Futex support available
-test "x$compat_futex_test" = "x0" && value=1 || value=0
-PPRINT_PROP_BOOL([Futex support], $value)
+AE_IS_FEATURE_ENABLED([smp-support]) && value=1 || value=0
+AE_PPRINT_PROP_BOOL([SMP support], $value)
# TLS
-test "x$def_tls_detect" = "x" && value="pthread_getspecific()" || value="$def_tls_detect"
-PPRINT_PROP_STRING([Thread Local Storage (TLS)], [$value])
+AE_IS_FEATURE_ENABLED([compiler-tls]) && value="compiler TLS" || value="pthread_getspecific()"
+AE_PPRINT_PROP_STRING([Thread Local Storage (TLS)], [$value])
# clock_gettime() available
-test "x$config_rcu_have_clock_gettime" = "xyes" && value=1 || value=0
-PPRINT_PROP_BOOL([clock_gettime()], $value)
+test "x$ac_cv_search_function_clock_gettime" != "xno" && value=1 || value=0
+AE_PPRINT_PROP_BOOL([clock_gettime()], $value)
# Require membarrier
-test "x$def_sys_membarrier_fallback" != "xyes" && value=1 || value=0
-PPRINT_PROP_BOOL([Require membarrier], $value)
+AE_IS_FEATURE_ENABLED([sys-membarrier-fallback]) && value=0 || value=1
+AE_PPRINT_PROP_BOOL([Require membarrier], $value)
# RCU debug enabled/disabled
-test "x$enable_rcu_debug" = "xyes" && value=1 || value=0
-PPRINT_PROP_BOOL([Internal debugging], $value)
+AE_IS_FEATURE_ENABLED([rcu-debug]) && value=1 || value=0
+AE_PPRINT_PROP_BOOL([Internal debugging], $value)
+
+# rculfhash iterator debug enabled/disabled
+AE_IS_FEATURE_ENABLED([cds-lfht-iter-debug]) && value=1 || value=0
+AE_PPRINT_PROP_BOOL([Lock-free HT iterator debugging], $value)
+
+AE_PPRINT_PROP_BOOL([Multi-flavor support], 1)
+
+# atomic builtins enabled/disabled
+AE_IS_FEATURE_ENABLED([compiler-atomic-builtins]) && value=1 || value=0
+AE_PPRINT_PROP_BOOL([Use compiler atomic builtins], $value)
+
+# legacy memory barriers
+AE_IS_FEATURE_ENABLED([legacy-mb]) && value=1 || value=0
+AE_PPRINT_PROP_BOOL([Emit legacy memory barriers], $value)
report_bindir="`eval eval echo $bindir`"
report_libdir="`eval eval echo $libdir`"
-# Print the bindir and libdir this `make install' will install into.
+# Print the bindir and libdir this 'make install' will install into.
AS_ECHO
-PPRINT_SUBTITLE([Install directories])
-PPRINT_PROP_STRING([Binaries], [$report_bindir])
-PPRINT_PROP_STRING([Libraries], [$report_libdir])
+AE_PPRINT_SUBTITLE([Install directories])
+AE_PPRINT_PROP_STRING([Binaries], [$report_bindir])
+AE_PPRINT_PROP_STRING([Libraries], [$report_libdir])
projects / urcu.git / blobdiff