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# Process this file with autoconf to produce a configure script.
AC_INIT([libatomic_ops],[7.2alpha7])
AC_PREREQ(2.64)
AC_CANONICAL_TARGET([])
AC_CONFIG_SRCDIR(src/atomic_ops.c)
AC_CONFIG_MACRO_DIR([m4])
AM_INIT_AUTOMAKE([foreign dist-bzip2 nostdinc])
AM_MAINTAINER_MODE
AM_CONFIG_HEADER(src/config.h)
# Checks for programs.
AM_PROG_CC_C_O
AM_PROG_AS
LT_INIT([disable-shared])
# Checks for functions.
AC_FUNC_MMAP
# Determine PIC flag, adjust default CFLAGS
need_asm=false
PICFLAG=
AC_MSG_CHECKING(Determining PIC compiler flag)
if test "$GCC" = yes; then
AC_MSG_RESULT(-fPIC)
PICFLAG=-fPIC
case "$host" in
*-*-solaris*)
# Workaround: at least GCC 3.4.6 does not define this macro.
CFLAGS="$CFLAGS -D__PIC__=1"
;;
esac
# Output all warnings.
CFLAGS="$CFLAGS -Wall -Wextra"
else
case "$host" in
*-*-hpux*)
AC_MSG_RESULT("+Z")
PICFLAG="+Z"
CFLAGS="$CFLAGS +O2 -mt"
;;
*-*-solaris*)
AC_MSG_RESULT(-Kpic)
PICFLAG=-Kpic
CFLAGS="$CFLAGS -O"
need_asm=true
;;
*-*-linux*)
AC_MSG_RESULT(-fPIC)
PICFLAG=-fPIC
# Any Linux compiler had better be gcc compatible.
;;
*)
AC_MSG_RESULT("<none>")
;;
esac
fi
CFLAGS="$CFLAGS -DNDEBUG"
AC_SUBST(PICFLAG)
AC_SUBST(DEFS)
AH_TEMPLATE([_PTHREADS], [Indicates the use of pthreads (NetBSD).])
THREADDLLIBS=
## Libraries needed to support threads.
AC_CHECK_LIB(pthread, pthread_self, THREADDLLIBS="-lpthread",,)
AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads.])
case "$host" in
*-*-netbsd*)
AC_DEFINE(_PTHREADS)
;;
*-*-openbsd* | *-*-kfreebsd*-gnu | *-*-dgux*)
THREADDLLIBS=-pthread
;;
*-*-cygwin* | *-*-darwin*)
THREADDLLIBS=
;;
esac
AC_SUBST(THREADDLLIBS)
AM_CONDITIONAL(NEED_ASM, test x$need_asm = xtrue)
AC_CONFIG_FILES([Makefile atomic_ops.pc doc/Makefile src/Makefile \
tests/Makefile])
AC_CONFIG_COMMANDS([default],[[]],[[
PICFLAG="${PICFLAG}"
CC="${CC}"
DEFS="${DEFS}"
]])
AC_OUTPUT
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