# Enable silent rules by default
AM_SILENT_RULES([yes])
-AC_REQUIRE_AUX_FILE([tap-driver.sh])
+
+## ##
+## 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
+
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=$enableval],
[def_compiler_tls="yes"])
-# Checks for C compiler
-AC_USE_SYSTEM_EXTENSIONS
-AC_PROG_CC
-# AC_PROG_CC_STDC was merged in AC_PROG_CC in autoconf 2.70
-m4_version_prereq([2.70], [], [AC_PROG_CC_STDC])
AS_IF([test "x$def_compiler_tls" = "xyes"], AC_DEFINE([CONFIG_RCU_TLS], [1]), [:])
# Checks for programs.
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 $PTHREAD_CFLAGS"
# Checks for library functions.
sys/time.h \
])
-AS_CASE([$host],[*-cygwin*],
- [AM_CONDITIONAL(USE_CYGWIN, true)],
- [AM_CONDITIONAL(USE_CYGWIN, false)]
-)
-
# Search for clock_gettime
AC_SEARCH_LIBS([clock_gettime], [rt], [
AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1])
# 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)