# Process this file with autoconf to produce a configure script.
-AC_INIT([userspace-rcu],[0.6.7],[mathieu dot desnoyers at efficios dot com])
+AC_INIT([userspace-rcu],[0.8.0],[mathieu dot desnoyers at efficios dot com])
# 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], [1:0:0])
+AC_SUBST([URCU_LIBRARY_VERSION], [3:0:0])
AC_CONFIG_AUX_DIR([config])
AC_CONFIG_MACRO_DIR([config])
AM_INIT_AUTOMAKE([foreign dist-bzip2 no-dist-gzip])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+m4_include([config/ax_tls.m4])
+
AC_CONFIG_SRCDIR([urcu.h])
AC_CONFIG_HEADERS([config.h urcu/config.h])
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.])
+
+# 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], $def_tls_detect)])
# Checks for programs.
AC_PROG_CC
# Checks for library functions.
AC_FUNC_MALLOC
AC_FUNC_MMAP
-AC_CHECK_FUNCS([bzero gettimeofday munmap sched_getcpu strtoul sysconf])
+AC_CHECK_FUNCS([bzero gettimeofday munmap sched_getcpu strtoul sysconf gettid])
# Find arch type
AS_CASE([$host_cpu],
[ppc], [ARCHTYPE="ppc"],
[s390], [ARCHTYPE="s390"],
[s390x], [ARCHTYPE="s390"],
+ [sparc], [ARCHTYPE="sparc64"],
[sparc64], [ARCHTYPE="sparc64"],
[alpha*], [ARCHTYPE="alpha"],
[ia64], [ARCHTYPE="gcc"],
[arm*], [ARCHTYPE="arm"],
+ [mips*], [ARCHTYPE="mips"],
+ [tile*], [ARCHTYPE="gcc"],
[ARCHTYPE="unknown"]
)
+AS_CASE([$host],[*-*-linux-androideabi],
+ [AM_CONDITIONAL(TARGET_IS_ANDROID, true)],
+ [AM_CONDITIONAL(TARGET_IS_ANDROID, false)]
+)
+
AC_SUBST(ARCHTYPE)
AC_SUBST(SUBARCHTYPE)
# ARM-specific checks
AS_IF([test "x$ARCHTYPE" = "xarm"],[
AC_MSG_CHECKING([for dmb instruction])
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]], [[asm volatile("dmb":::"memory");]])],[
+ 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])
],[
])
])
+# Tile-specific checks
+AS_IF([echo "$host_cpu" | grep "^tile"],[
+ AC_MSG_CHECKING([for Tile architecture type])
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+ #ifndef __tilegx__
+ #error
+ #endif
+ ]])
+ ],[
+ AC_MSG_RESULT([ok])
+ ],[
+ AC_MSG_FAILURE([URCU has only been tested on the TileGx architecture. For other Tile* architectures, please run the tests first and report the results to the maintainer so that proper support can be added.])
+ ])
+])
+
# x86-specific checks
AS_IF([test "x$ARCHTYPE" = "xx86"],[
AC_MSG_CHECKING([if architecture really supports the mfence instruction])
AC_MSG_CHECKING([for sys_futex()])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <sys/syscall.h>
- ]],[[
#ifndef __NR_futex
#error "futexes not available"
#endif
compat_futex_test=1
])
+# Check for pthread
+AC_CHECK_LIB([pthread], [pthread_create],
+ [AM_CONDITIONAL(LIBC_INCLUDES_PTHREAD, false)],
+ [AC_CHECK_LIB([c], [pthread_create],
+ [AM_CONDITIONAL(LIBC_INCLUDES_PTHREAD, true)],
+ [AC_MSG_ERROR([Cannot find libpthread. Use [LDFLAGS]=-Ldir to specify its location.])]
+ )]
+)
+
AM_CONDITIONAL([COMPAT_FUTEX], [test "x$compat_futex_test" = "x1"])
AM_CONDITIONAL([COMPAT_ARCH], [test "x$SUBARCHTYPE" = "xx86compat"])
+AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
# smp-support configure option
AC_ARG_ENABLE([smp-support],
saved_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS -D_GNU_SOURCE"
+AC_CHECK_TYPES([cpu_set_t],
+ [have_cpu_set_t="yes"],
+ [have_cpu_set_t="no"],
+ [#include <sched.h>])
+
+# Confirm that we have CPU_ZERO, and it actually works.
+AC_MSG_CHECKING([whether CPU_ZERO works])
+AH_TEMPLATE([HAVE_CPU_ZERO], [Defined to 1 if we have CPU_ZERO and it works])
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+ #define _GNU_SOURCE
+ #include <sched.h>
+ int main()
+ {
+ cpu_set_t foo; CPU_ZERO(&foo);
+ return 0;
+ }
+ ]])
+],[
+ AC_DEFINE(HAVE_CPU_ZERO, 1)
+ AC_MSG_RESULT([yes])
+],[
+ AC_MSG_RESULT([no])
+])
+
+# Confirm that we have CPU_SET, and it actually works.
+AC_MSG_CHECKING([whether CPU_SET works])
+AH_TEMPLATE([HAVE_CPU_SET], [Defined to 1 if we have CPU_SET and it works])
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+ #define _GNU_SOURCE
+ #include <sched.h>
+ int main()
+ {
+ cpu_set_t foo, mask; CPU_SET(0, &foo);
+ return 0;
+ }
+ ]])
+],[
+ AC_DEFINE(HAVE_CPU_SET, 1)
+ AC_MSG_RESULT([yes])
+],[
+ AC_MSG_RESULT([no])
+])
+
# First check if the function is available at all.
AC_CHECK_FUNCS([sched_setaffinity],[
# Okay, we have it. Check if also have cpu_set_t. If we don't,
# version with 2 or 3 arguments. In that case, CPU_ZERO, etc.,
# should also be present, but we confirm nonetheless.
- AC_CHECK_TYPES([cpu_set_t],[
- # We do have it. Confirm that we have CPU_ZERO, and it actually works.
- AC_MSG_CHECKING([whether CPU_ZERO works])
- AH_TEMPLATE([HAVE_CPU_ZERO], [Defined to 1 if we have CPU_ZERO and it works])
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
- #define _GNU_SOURCE
- #include <sched.h>
- ]],[[
- cpu_set_t foo; CPU_ZERO (&foo);
- ]])
- ],[
- # Works!
- AC_DEFINE(HAVE_CPU_ZERO, 1)
- AC_MSG_RESULT([yes])
- ],[
- AC_MSG_RESULT([no])
- ])
-
+ AS_IF([test "x$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>
- ]],[[
- cpu_set_t foo;
- sched_setaffinity (0, sizeof (foo), &foo);
+ 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,
+ 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)
- ],
- [#include <sched.h>])
+ ])
])
CFLAGS=$saved_CFLAGS
])
AC_CONFIG_FILES([
Makefile
+ doc/Makefile
+ doc/examples/Makefile
tests/Makefile
+ tests/common/Makefile
+ tests/unit/Makefile
+ tests/benchmark/Makefile
+ tests/regression/Makefile
liburcu.pc
liburcu-bp.pc
liburcu-cds.pc
],[
AS_ECHO("SMP support disabled.")
])
+
+AS_IF([test "x$def_tls_detect" = "x"],[
+ AS_ECHO("Thread Local Storage (TLS): pthread_getspecific().")
+],[
+ AS_ECHO("Thread Local Storage (TLS): $def_tls_detect.")
+])
projects / urcu.git / blobdiff