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|
# Process this file with autoconf to produce a configure script.
AC_INIT([libatomic_ops],[7.2alpha7])
AC_CANONICAL_TARGET([])
AC_CONFIG_SRCDIR(src/atomic_ops.c)
AM_INIT_AUTOMAKE
AC_PROG_RANLIB
AM_CONFIG_HEADER(src/config.h)
# Checks for programs.
AM_PROG_CC_C_O
AM_PROG_AS
# Checks for functions.
AC_FUNC_MMAP
# Checks for header files.
AC_HEADER_STDC
# AC_CHECK_HEADERS([ ])
# Determine PIC flag.
need_asm=false
PICFLAG=
AC_MSG_CHECKING(for PIC compiler flag)
if test "$GCC" = yes; then
case "$host" in
*-*-cygwin* | *-*-mingw*)
# Cygwin and Mingw[-w32/64] do not need -fPIC.
AC_MSG_RESULT("<none>")
;;
*)
AC_MSG_RESULT(-fPIC)
PICFLAG=-fPIC
AC_MSG_CHECKING(whether gcc -fPIC causes __PIC__ definition)
# Workaround: at least GCC 3.4.6 (Solaris) does not define this macro.
old_CFLAGS="$CFLAGS"
CFLAGS="$PICFLAG $CFLAGS"
AC_TRY_COMPILE([],[
#ifndef __PIC__
# error
#endif
], [ac_cv_pic_macro=yes], [ac_cv_pic_macro=no])
CFLAGS="$old_CFLAGS"
AC_MSG_RESULT($ac_cv_pic_macro)
AS_IF([test "$ac_cv_pic_macro" = yes], [],
[PICFLAG="-D__PIC__=1 $PICFLAG"])
;;
esac
else
case "$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="$CFLAGS -DNDEBUG"
AC_SUBST(PICFLAG)
AC_SUBST(DEFS)
AH_TEMPLATE([_PTHREADS], [Indicates the use of pthreads (NetBSD).])
THREADDLLIBS=
have_pthreads=true
## Libraries needed to support threads.
AC_CHECK_LIB(pthread, pthread_self, THREADDLLIBS="-lpthread",,)
AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads.])
case "$host" in
*-*-netbsd*)
AC_DEFINE(_PTHREADS)
;;
*-*-openbsd* | *-*-kfreebsd*-gnu | *-*-dgux*)
THREADDLLIBS=-pthread
;;
*-*-cygwin* | *-*-darwin*)
THREADDLLIBS=
;;
*-*-mingw*)
THREADDLLIBS=
have_pthreads=false
;;
esac
AC_SUBST(THREADDLLIBS)
AM_CONDITIONAL(HAVE_PTHREAD_H, test x$have_pthreads = xtrue)
AM_CONDITIONAL(NEED_ASM, test x$need_asm = xtrue)
AC_CONFIG_FILES([Makefile pkgconfig/atomic_ops.pc \
pkgconfig/atomic_ops-uninstalled.pc doc/Makefile src/Makefile \
src/atomic_ops/Makefile src/atomic_ops/sysdeps/Makefile tests/Makefile])
AC_CONFIG_COMMANDS([default],[[]],[[
PICFLAG="${PICFLAG}"
CC="${CC}"
DEFS="${DEFS}"
]])
AC_OUTPUT
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