AC_TYPE_UINT8_T
-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.])
-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. Introduces a performance penalty.])
-AH_TEMPLATE([CONFIG_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.])
+## ##
+## Header checks ##
+## ##
-# 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])])
+AC_HEADER_STDBOOL
+AC_CHECK_HEADERS([ \
+ limits.h \
+ stddef.h \
+ sys/param.h \
+ sys/time.h \
+])
-# 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=$enableval],
- [def_compiler_tls="yes"])
-AS_IF([test "x$def_compiler_tls" = "xyes"], AC_DEFINE([CONFIG_RCU_TLS], [1]), [:])
+## ##
+## Programs checks ##
+## ##
-# Checks for programs.
AC_PROG_AWK
+AC_PROG_GREP
AC_PROG_MAKE_SET
AC_CHECK_PROGS(NPROC, [nproc gnproc])
-AC_CHECK_PROGS(GETCONF, [getconf])
+AC_CHECK_PROG(GETCONF, [getconf])
AS_IF([test "x$NPROC" != "x"],
[NPROC_CMD=$NPROC],
[AS_IF([test "x$GETCONF" != "x"],
)
AC_SUBST([NPROC_CMD], [$NPROC_CMD])
+# Initialize and configure libtool
LT_INIT
-AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
+
+## ##
+## Library checks ##
+## ##
# Checks for library functions.
AC_FUNC_MMAP
# AC_FUNC_MALLOC causes problems when cross-compiling.
#AC_FUNC_MALLOC
-# Check for headers
-AC_HEADER_STDBOOL
-AC_CHECK_HEADERS([ \
- limits.h \
- stddef.h \
- sys/param.h \
- sys/time.h \
+# Search for clock_gettime() in -lrt
+AC_SEARCH_LIBS([clock_gettime], [rt], [
+ AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1], [clock_gettime() is detected.])
])
-# Search for clock_gettime
-AC_SEARCH_LIBS([clock_gettime], [rt], [
- AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1])
- config_rcu_have_clock_gettime=yes
-], [])
+
+
+AH_TEMPLATE([CONFIG_RCU_SMP], [Enable SMP support. With SMP support enabled, uniprocessors are also supported. With SMP support disabled, UP systems work fine, but the behavior of SMP systems is undefined.])
+AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.])
+AH_TEMPLATE([CONFIG_RCU_FORCE_SYS_MEMBARRIER], [Require the operating system to support the membarrier system call for default and bulletproof flavors.])
+AH_TEMPLATE([CONFIG_RCU_DEBUG], [Enable internal debugging self-checks. Introduces a performance penalty.])
+AH_TEMPLATE([CONFIG_CDS_LFHT_ITER_DEBUG], [Enable extra debugging checks for lock-free hash table iterator traversal. Alters the rculfhash ABI. Make sure to compile both library and application with matching configuration.])
+
+# Allow requiring the operating system to support the membarrier system
+# call. Applies to default and bulletproof flavors.
+AC_ARG_ENABLE([sys-membarrier-fallback],
+ AS_HELP_STRING([--disable-sys-membarrier-fallback], [Abort if sys-membarrier is needed but not available rather than using a fallback.]),
+ [def_sys_membarrier_fallback=$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"])
+
+AS_IF([test "x$def_compiler_tls" = "xyes"], AC_DEFINE([CONFIG_RCU_TLS], [1]), [:])
+
+
+AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
PPRINT_PROP_STRING([Thread Local Storage (TLS)], [$value])
# clock_gettime() available
-test "x$config_rcu_have_clock_gettime" = "xyes" && value=1 || value=0
+test "x$ac_cv_search_function_clock_gettime" != "xno" && value=1 || value=0
PPRINT_PROP_BOOL([clock_gettime()], $value)
# Require membarrier