glib/configure.in

dnl ***********************************
dnl *** include special GLib macros ***
dnl ***********************************
builtin(include, acglib.m4)dnl

# require autoconf 2.13
AC_PREREQ(2.13)

# init autoconf (and check for presence of glist.c)
AC_INIT(glist.c)

# Save this value here, since automake will set cflags later
cflags_set=${CFLAGS+set}

# we rewrite this file
rm -f glibconfig-sysdefs.h

dnl we need to AC_DIVERT_PUSH/AC_DIVERT_POP these variable definitions so they
dnl are available for $ac_help expansion (don't we all *love* autoconf?)
AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
#
# The following version number definitions apply to GLib, GModule and GThread
# as a whole, so if changes occoured in any of them, they are all
# treated with the same interface and binary age.
#
# Making releases:
#   GLIB_MICRO_VERSION += 1;
#   GLIB_INTERFACE_AGE += 1;
#   GLIB_BINARY_AGE += 1;
# if any functions have been added, set GLIB_INTERFACE_AGE to 0.
# if backwards compatibility has been broken,
# set GLIB_BINARY_AGE _and_ GLIB_INTERFACE_AGE to 0.
#
GLIB_MAJOR_VERSION=1
GLIB_MINOR_VERSION=2
GLIB_MICRO_VERSION=2
GLIB_INTERFACE_AGE=2
GLIB_BINARY_AGE=2
GLIB_VERSION=$GLIB_MAJOR_VERSION.$GLIB_MINOR_VERSION.$GLIB_MICRO_VERSION
dnl
AC_DIVERT_POP()dnl

AC_SUBST(GLIB_MAJOR_VERSION)
AC_SUBST(GLIB_MINOR_VERSION)
AC_SUBST(GLIB_MICRO_VERSION)
AC_SUBST(GLIB_VERSION)

# libtool versioning
LT_RELEASE=$GLIB_MAJOR_VERSION.$GLIB_MINOR_VERSION
LT_CURRENT=`expr $GLIB_MICRO_VERSION - $GLIB_INTERFACE_AGE`
LT_REVISION=$GLIB_INTERFACE_AGE
LT_AGE=`expr $GLIB_BINARY_AGE - $GLIB_INTERFACE_AGE`
AC_SUBST(LT_RELEASE)
AC_SUBST(LT_CURRENT)
AC_SUBST(LT_REVISION)
AC_SUBST(LT_AGE)

VERSION=$GLIB_VERSION
PACKAGE=glib

AM_INIT_AUTOMAKE($PACKAGE, $VERSION, no-define)

# Specify a configuration file
AM_CONFIG_HEADER(config.h)

AC_DEFINE_UNQUOTED(GLIB_MAJOR_VERSION, $GLIB_MAJOR_VERSION)
AC_DEFINE_UNQUOTED(GLIB_MINOR_VERSION, $GLIB_MINOR_VERSION)
AC_DEFINE_UNQUOTED(GLIB_MICRO_VERSION, $GLIB_MICRO_VERSION)
AC_DEFINE_UNQUOTED(GLIB_INTERFACE_AGE, $GLIB_INTERFACE_AGE)
AC_DEFINE_UNQUOTED(GLIB_BINARY_AGE, $GLIB_BINARY_AGE)

dnl Initialize libtool
AM_PROG_LIBTOOL

dnl Initialize maintainer mode
AM_MAINTAINER_MODE

AC_CANONICAL_HOST

dnl figure debugging default, prior to $ac_help setup
dnl
AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
if test `expr $GLIB_MINOR_VERSION \% 2` = 1 ; then
	debug_default=yes
else
	debug_default=minimum
fi
AC_DIVERT_POP()dnl

dnl declare --enable-* args and collect ac_help strings
AC_ARG_ENABLE(debug, [  --enable-debug=[no/minimum/yes] turn on debugging [default=$debug_default]],,enable_debug=$debug_default)
AC_ARG_ENABLE(mem_check, [  --enable-mem-check      turn on malloc/free sanity checking [default=no]],,enable_mem_check=no)
AC_ARG_ENABLE(mem_profile, [  --enable-mem-profile    turn on malloc profiling atexit [default=no]],,enable_mem_profile=no)
AC_ARG_ENABLE(ansi, [  --enable-ansi           turn on strict ansi [default=no]],
		    , enable_ansi=no)
AC_ARG_ENABLE(threads, [  --enable-threads        turn on basic thread support [default=yes]
                          ([=no] will override --with-threads)],,enable_threads=yes)

if test "x$enable_threads" != "xyes"; then
  enable_threads=no
fi

AC_MSG_CHECKING(whether to enable memory checking)
if test "x$enable_mem_check" = "xyes"; then
  AC_DEFINE(ENABLE_MEM_CHECK, 1)
  AC_SUBST(ENABLE_MEM_CHECK)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi

AC_MSG_CHECKING(whether to enable memory profiling)
if test "x$enable_mem_profile" = "xyes"; then
  AC_DEFINE(ENABLE_MEM_PROFILE, 1)
  AC_SUBST(ENABLE_MEM_PROFILE)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi

if test "x$enable_debug" = "xyes"; then
  test "$cflags_set" = set || CFLAGS="$CFLAGS -g"
  GLIB_DEBUG_FLAGS="-DG_ENABLE_DEBUG"
else
  if test "x$enable_debug" = "xno"; then
    GLIB_DEBUG_FLAGS="-DG_DISABLE_ASSERT -DG_DISABLE_CHECKS"
  fi
fi

AC_DEFINE_UNQUOTED(G_COMPILED_WITH_DEBUGGING, "${enable_debug}")

# Checks for programs.
AC_PROG_CC
AM_PROG_CC_STDC
AC_PROG_INSTALL

changequote(,)dnl
if test "x$GCC" = "xyes"; then
  case " $CFLAGS " in
  *[\ \	]-Wall[\ \	]*) ;;
  *) CFLAGS="$CFLAGS -Wall" ;;
  esac

  if test "x$enable_ansi" = "xyes"; then
    case " $CFLAGS " in
    *[\ \	]-ansi[\ \	]*) ;;
    *) CFLAGS="$CFLAGS -ansi" ;;
    esac

    case " $CFLAGS " in
    *[\ \	]-pedantic[\ \	]*) ;;
    *) CFLAGS="$CFLAGS -pedantic" ;;
    esac
  fi
fi
changequote([,])dnl

dnl DU4 native cc currently needs -std1 for ANSI mode (instead of K&R)
AC_MSG_CHECKING([for extra flags to get ANSI library prototypes])
glib_save_LIBS=$LIBS
LIBS="$LIBS -lm"
AC_TRY_RUN([#include <math.h>
             int main (void) { return (log(1) != log(1.)); }],
     AC_MSG_RESULT(none needed),
     glib_save_CFLAGS=$CFLAGS
     CFLAGS="$CFLAGS -std1"
     AC_TRY_RUN([#include <math.h>
                 int main (void) { return (log(1) != log(1.)); }],
         AC_MSG_RESULT(-std1),
         AC_MSG_RESULT()
         CFLAGS=$glib_save_CFLAGS
         AC_MSG_WARN(
                [No ANSI prototypes found in library. (-std1 didn't work.)])
     )
)
LIBS=$glib_save_LIBS

dnl NeXTStep cc seems to need this
AC_MSG_CHECKING([for extra flags for POSIX compliance])
AC_TRY_COMPILE([#include <dirent.h>], [DIR *dir;],
  AC_MSG_RESULT(none needed),
  glib_save_CFLAGS=$CFLAGS
  CFLAGS="$CFLAGS -posix"
  AC_TRY_COMPILE([#include <dirent.h>], [DIR *dir;],
    AC_MSG_RESULT(-posix),
    AC_MSG_RESULT()
    CFLAGS=$glib_save_CFLAGS
    AC_MSG_WARN([Could not determine POSIX flag. (-posix didn't work.)])))

# Checks for header files.
AC_HEADER_STDC

# Checks for library functions.
AC_FUNC_VPRINTF

AC_CHECK_FUNCS(atexit on_exit)

AC_CHECK_SIZEOF(char)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(long long)

dnl long doubles were not used, and a portability problem
dnl AC_C_LONG_DOUBLE
AC_C_CONST

dnl AC_C_INLINE is useless to us since it bails out too early, we need to
dnl truely know which ones of `inline', `__inline' and `__inline__' are
dnl actually supported.
AC_MSG_CHECKING(for __inline)
AC_CACHE_VAL(glib_cv_has__inline,[
        AC_TRY_RUN([
	__inline int foo () { return 0; }
	int main () { return foo (); }
       	],
	glib_cv_has__inline=yes
        ,
	glib_cv_has__inline=no
        ,)
])
AC_MSG_RESULT($glib_cv_has__inline)
case x$glib_cv_has__inline in
xyes) AC_DEFINE(G_HAVE___INLINE)
esac
AC_MSG_CHECKING(for __inline__)
AC_CACHE_VAL(glib_cv_has__inline__,[
        AC_TRY_RUN([
	__inline__ int foo () { return 0; }
	int main () { return foo (); }
       	],
	glib_cv_has__inline__=yes
        ,
	glib_cv_has__inline__=no
        ,)
])
AC_MSG_RESULT($glib_cv_has__inline__)
case x$glib_cv_has__inline__ in
xyes) AC_DEFINE(G_HAVE___INLINE__)
esac
AC_MSG_CHECKING(for inline)
AC_CACHE_VAL(glib_cv_hasinline,[
        AC_TRY_RUN([
	inline int foo () { return 0; }
	int main () { return foo (); }
       	],
	glib_cv_hasinline=yes
        ,
	glib_cv_hasinline=no
        ,)
])
AC_MSG_RESULT($glib_cv_hasinline)
case x$glib_cv_hasinline in
xyes) AC_DEFINE(G_HAVE_INLINE)
esac

dnl for bytesex stuff
AC_C_BIGENDIAN

dnl header file checks
AC_CHECK_HEADERS(float.h, AC_DEFINE(HAVE_FLOAT_H))
AC_CHECK_HEADERS(limits.h, AC_DEFINE(HAVE_LIMITS_H))
AC_CHECK_HEADERS(pwd.h, AC_DEFINE(HAVE_PWD_H))
AC_CHECK_HEADERS(sys/param.h, AC_DEFINE(HAVE_SYS_PARAM_H))
AC_CHECK_HEADERS(sys/poll.h, AC_DEFINE(HAVE_SYS_POLL_H))
AC_CHECK_HEADERS(sys/select.h, AC_DEFINE(HAVE_SYS_SELECT_H))
AC_CHECK_HEADERS(sys/time.h, AC_DEFINE(HAVE_SYS_TIME_H))
AC_CHECK_HEADERS(sys/times.h, AC_DEFINE(HAVE_SYS_TIMES_H))
AC_CHECK_HEADERS(unistd.h, AC_DEFINE(HAVE_UNISTD_H))
AC_CHECK_HEADERS(values.h, AC_DEFINE(HAVE_VALUES_H))

# Check for some functions
AC_CHECK_FUNCS(lstat strerror strsignal memmove vsnprintf strcasecmp strncasecmp poll)

# Check for sys_errlist
AC_MSG_CHECKING(for sys_errlist)
AC_TRY_LINK(, [
extern char *sys_errlist[];
extern int sys_nerr;
sys_errlist[sys_nerr-1][0] = 0;
], glib_ok=yes, glib_ok=no)
AC_MSG_RESULT($glib_ok)
if test $glib_ok = no; then
    AC_DEFINE(NO_SYS_ERRLIST)
fi

# Check for sys_siglist
AC_MSG_CHECKING(for sys_siglist)
AC_TRY_LINK(, [
extern char *sys_siglist[];
strlen (sys_siglist[0]);
], glib_ok=yes, glib_ok=no)
AC_MSG_RESULT($glib_ok)
if test $glib_ok = no; then
    AC_DEFINE(NO_SYS_SIGLIST)
fi

# Check for sys_siglist decl (see Tue Jan 19 00:44:24 1999 in changelog)
AC_MSG_CHECKING(for sys_siglist declaration)
AC_TRY_COMPILE([#include <signal.h>], [
strlen (sys_siglist[0]);
], glib_ok=yes, glib_ok=no)
AC_MSG_RESULT($glib_ok)
if test $glib_ok = no; then
    AC_DEFINE(NO_SYS_SIGLIST_DECL)
fi

# Check if <sys/select.h> needs to be included for fd_set
AC_MSG_CHECKING([for fd_set])
AC_TRY_COMPILE([#include <sys/types.h>],
        [fd_set readMask, writeMask;], gtk_ok=yes, gtk_ok=no)
if test $gtk_ok = yes; then
    AC_MSG_RESULT([yes, found in sys/types.h])
else
    AC_HEADER_EGREP(fd_mask, sys/select.h, gtk_ok=yes)
    if test $gtk_ok = yes; then
        AC_DEFINE(HAVE_SYS_SELECT_H)
        AC_MSG_RESULT([yes, found in sys/select.h])
    else
	AC_DEFINE(NO_FD_SET)
	AC_MSG_RESULT(no)
    fi
fi

# These are used only in GDK (gdki18n.h)
# This stuff is here only so that we can define these
# things in glibconfig.h. If gtk+ started using an installed
# gdkconfig.h file, then the definitions would belong there.

# Check for wchar.h

AC_MSG_CHECKING(for wchar.h)
AC_TRY_CPP([#include <wchar.h>], glib_wchar_h=yes, glib_wchar_h=no)
if test $glib_wchar_h = yes; then
   AC_DEFINE(HAVE_WCHAR_H)
fi
AC_MSG_RESULT($glib_wchar_h)

# Check for wctype.h (for iswalnum)

AC_MSG_CHECKING(for wctype.h)
AC_TRY_CPP([#include <wctype.h>], glib_wctype_h=yes, glib_wctype_h=no)
if test $glib_wctype_h = yes; then
   AC_DEFINE(HAVE_WCTYPE_H)
fi
AC_MSG_RESULT($glib_wctype_h)

oLIBS="$LIBS"
# in Solaris 2.5, `iswalnum' is in -lw
AC_CHECK_FUNC(iswalnum,,[AC_CHECK_LIB(w,iswalnum)])

# The following is necessary for Linux libc-5.4.38
AC_MSG_CHECKING(if iswalnum() and friends are properly defined)
AC_TRY_LINK([#include <stdlib.h>],[
#if (defined(HAVE_WCTYPE_H) || defined(HAVE_WCHAR_H))
#  ifdef HAVE_WCTYPE_H
#    include <wctype.h>
#  else
#    ifdef HAVE_WCHAR_H
#      include <wchar.h>
#    endif
#  endif
#else
#  define iswalnum(c) ((wchar_t)(c) <= 0xFF && isalnum(c))
#endif
iswalnum((wchar_t) 0);
], glib_working_wctype=yes, glib_working_wctype=no)
LIBS="$oLIBS"

if test $glib_working_wctype = no; then
   AC_DEFINE(HAVE_BROKEN_WCTYPE)
fi
AC_MSG_RESULT($glib_working_wctype)

dnl *** check for sane realloc() ***
AC_MSG_CHECKING(whether realloc (NULL,) will work)
AC_CACHE_VAL(glib_cv_sane_realloc,[
	AC_TRY_RUN([
	#include <stdlib.h>
	int main() {
	  return realloc (0, sizeof (int)) == 0;
	}],
	glib_cv_sane_realloc=yes
	AC_DEFINE(REALLOC_0_WORKS)
	,
	glib_cv_sane_realloc=no
	,)
])
AC_MSG_RESULT($glib_cv_sane_realloc)


dnl **********************
dnl *** va_copy checks ***
dnl **********************
dnl we currently check for all three va_copy possibilities, so we get
dnl all results in config.log for bug reports.
AC_MSG_CHECKING(for an implementation of va_copy())
AC_CACHE_VAL(glib_cv_va_copy,[
	AC_TRY_RUN([
	#include <stdarg.h>
	void f (int i, ...) {
	va_list args1, args2;
	va_start (args1, i);
	va_copy (args2, args1);
	if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
	  exit (1);
	va_end (args1); va_end (args2);
	}
	int main() {
	  f (0, 42);
	  return 0;
	}],
	glib_cv_va_copy=yes
	,
	glib_cv_va_copy=no
	,)
])
AC_MSG_RESULT($glib_cv_va_copy)
AC_MSG_CHECKING(for an implementation of __va_copy())
AC_CACHE_VAL(glib_cv___va_copy,[
	AC_TRY_RUN([
	#include <stdarg.h>
	void f (int i, ...) {
	va_list args1, args2;
	va_start (args1, i);
	__va_copy (args2, args1);
	if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
	  exit (1);
	va_end (args1); va_end (args2);
	}
	int main() {
	  f (0, 42);
	  return 0;
	}],
	glib_cv___va_copy=yes
	,
	glib_cv___va_copy=no
	,)
])
AC_MSG_RESULT($glib_cv___va_copy)
AC_MSG_CHECKING(whether va_lists can be copied by value)
AC_CACHE_VAL(glib_cv_va_val_copy,[
	AC_TRY_RUN([
	#include <stdarg.h>
	void f (int i, ...) {
	va_list args1, args2;
	va_start (args1, i);
	args2 = args1;
	if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
	  exit (1);
	va_end (args1); va_end (args2);
	}
	int main() {
	  f (0, 42);
	  return 0;
	}],
	glib_cv_va_val_copy=yes
	,
	glib_cv_va_val_copy=no
	,)
])
if test "x$glib_cv_va_copy" = "xyes"; then
  AC_DEFINE(G_VA_COPY, va_copy)
else if test "x$glib_cv___va_copy" = "xyes"; then
  AC_DEFINE(G_VA_COPY, __va_copy)
fi
fi
if test "x$glib_cv_va_val_copy" = "xno"; then
  AC_DEFINE(G_VA_COPY_AS_ARRAY)
fi
AC_MSG_RESULT($glib_cv_va_val_copy)


dnl ***********************
dnl *** g_module checks ***
dnl ***********************
G_MODULE_LIBS=
G_MODULE_LDFLAGS=
dnl G_MODULE_IMPL= don't reset, so cmd-line can override
G_MODULE_NEED_USCORE=0
G_MODULE_HAVE_DLERROR=0
dnl *** dlopen() and dlsym() in system libraries
if test -z "$G_MODULE_IMPL"; then
	AC_CHECK_FUNC(dlopen,
		AC_CHECK_FUNC(dlsym,
			G_MODULE_IMPL=G_MODULE_IMPL_DL
		,)
	,)
fi
dnl *** dlopen() and dlsym() in libdl
if test -z "$G_MODULE_IMPL"; then
	AC_CHECK_LIB(dl, dlopen,
		AC_CHECK_LIB(dl, dlsym,
			G_MODULE_LIBS=-ldl
			G_MODULE_IMPL=G_MODULE_IMPL_DL
		,)
	,)
fi
dnl *** shl_load() in libdld (HP-UX)
if test -z "$G_MODULE_IMPL"; then
        AC_MSG_CHECKING(how to export all symbols)
        SAVED_LDFLAGS=$LDFLAGS
        LDFLAGS="$LDFLAGS -Wl,-E"
        AC_TRY_LINK(,[ return 0; ],
                [ G_MODULE_LDFLAGS="-Wl,-E" ],[
                LDFLAGS="$SAVED_LDFLAGS -bexpall"
                AC_TRY_LINK(,[ return 0; ],
                        G_MODULE_LDFLAGS="-bexpall",
                        G_MODULE_LDFLAGS="none"
                )
        ])
        LDFLAGS=$SAVED_LDFLAGS
        AC_MSG_RESULT($G_MODULE_LDFLAGS)
        if test "x$G_MODULE_LDFLAGS" = "xnone"; then
                G_MODULE_LDFLAGS=
        fi
	AC_CHECK_LIB(dld, shl_load,
		G_MODULE_LIBS=-ldld
		G_MODULE_IMPL=G_MODULE_IMPL_DLD
	,)
fi
dnl *** additional checks for G_MODULE_IMPL_DL
if test "$G_MODULE_IMPL" = "G_MODULE_IMPL_DL"; then
	case "$host_os" in
	  linux*)
	    G_MODULE_LDFLAGS='-rdynamic'
	    ;;
	esac
	LIBS_orig="$LIBS"
	LDFLAGS_orig="$LDFLAGS"
	LIBS="$LIBS $G_MODULE_LIBS"
	LDFLAGS="$LDFLAGS $G_MODULE_LDFLAGS"
dnl *** check whether we need preceeding underscores
	AC_MSG_CHECKING(for preceeding underscore in symbols)
	AC_CACHE_VAL(glib_cv_uscore,[
		AC_TRY_RUN([
		#include <dlfcn.h>
                int glib_underscore_test (void) { return 42; }
		int main() {
		  void *f1 = (void*)0, *f2 = (void*)0, *handle;
		  handle = dlopen ((void*)0, 0);
		  if (handle) {
		    f1 = dlsym (handle, "glib_underscore_test");
		    f2 = dlsym (handle, "_glib_underscore_test");
		  } return (!f2 || f1);
		}],
			glib_cv_uscore=yes,
			glib_cv_uscore=no,
		)
		rm -f plugin.c plugin.o plugin.lo
	])
	AC_MSG_RESULT($glib_cv_uscore)
	if test "x$glib_cv_uscore" = "xyes"; then
  		G_MODULE_NEED_USCORE=1
	else
  		G_MODULE_NEED_USCORE=0
	fi

	LDFLAGS="$LDFLAGS_orig"
dnl *** check for having dlerror()
	AC_CHECK_FUNC(dlerror,
		G_MODULE_HAVE_DLERROR=1,
		G_MODULE_HAVE_DLERROR=0)
	LIBS="$LIBS_orig"
fi
dnl *** done, have e got an implementation?
if test -z "$G_MODULE_IMPL"; then
	G_MODULE_IMPL=0
fi
AC_SUBST(G_MODULE_IMPL)
AC_SUBST(G_MODULE_LIBS)
AC_SUBST(G_MODULE_LDFLAGS)
AC_SUBST(G_MODULE_HAVE_DLERROR)
AC_SUBST(G_MODULE_NEED_USCORE)
AC_SUBST(GLIB_DEBUG_FLAGS)


dnl ***********************
dnl *** g_thread checks ***
dnl ***********************

AC_ARG_WITH(threads, [  --with-threads=[none/posix/solaris/nspr] specify a thread implementation to use],
	if test "x$with_threads" = x; then
		want_threads=yes
	else
		want_threads=$with_threads
	fi,
	want_threads=yes)
if test "x$enable_threads" = "xno"; then
        want_threads=no
fi
if test "x$want_threads" = "xnone"; then
	want_threads=no
fi

dnl error and warning message
dnl *************************

THREAD_NO_IMPLEMENTATION="You do not have any known thread system on your
                computer. glib will not be thread safe on your computer."

FLAG_DOES_NOT_WORK="I can't find the MACRO, that enables thread safety on your
                platform (normaly it's "_REENTRANT"). I'll not use any flag on
                compilation now, but then your programs might not work.
                Please provide information on how it is done on your system."

LIBS_NOT_FOUND_1="I can't find the libraries for the thread implementation
		"

LIBS_NOT_FOUND_2=". Please choose another thread implementation or
		provide information on your thread implementation.
		You can also run 'configure --disable-threads' 
		to compile without thread support."

FUNC_NO_GETPWUID_R="the 'g_get_(user_name|real_name|home_dir|tmp_dir)'
		functions will not be MT-safe during their first call because
		there is no working 'getpwuid_r' on your system."

FUNC_NO_LOCALTIME_R="the 'g_date_set_time' function will not be MT-safe
		because there is no 'localtime_r' on your system."

dnl determination of thread implementation
dnl ***************************************

have_threads=none
if test "x$want_threads" = xyes || test "x$want_threads" = xsolaris; then
       	case $host in
               	*-*-solaris*)
              	AC_CHECK_LIB(thread, cond_init, have_threads=solaris)
		;;
	esac
fi
if test "x$want_threads" = xyes || test "x$want_threads" = xposix; then
        if test "x$have_threads" = xnone; then
                AC_CHECK_HEADER(pthread.h, have_threads=posix)
        fi
fi
if test "x$want_threads" = xyes || test "x$want_threads" = xnspr; then
        if test "x$have_threads" = xnone; then
		AC_CHECK_LIB(nspr21, PRP_NewNakedCondVar, have_threads=nspr)
	fi
fi

AC_MSG_CHECKING(for thread implementation)

if test "x$have_threads" = xnone && test "x$want_threads" != xno; then
	AC_MSG_RESULT(none available)
        AC_MSG_WARN($THREAD_NO_IMPLEMENTATION)
else
	AC_MSG_RESULT($have_threads)
fi


dnl determination of G_THREAD_LIBS
dnl ******************************

G_THREAD_LIBS=
G_THREAD_CFLAGS=

mutex_has_default=no
case $have_threads in
        posix)
		G_THREAD_LIBS=error
		AC_CHECK_LIB(pthread, pthread_attr_init,
			     G_THREAD_LIBS="-lpthread")
		if test "x$G_THREAD_LIBS" = xerror; then
                	AC_CHECK_LIB(pthreads, pthread_attr_init,
			     	G_THREAD_LIBS="-lpthreads")
		fi
		if test "x$G_THREAD_LIBS" = xerror; then
                	AC_CHECK_LIB(c_r, pthread_attr_init,
			     	G_THREAD_LIBS="-lc_r")
		fi
		if test "x$G_THREAD_LIBS" = xerror; then
			AC_CHECK_FUNC(pthread_attr_init, G_THREAD_LIBS="")
		fi
		dnl ********** DG/UX ************
        	if test "x$G_THREAD_LIBS" = xerror; then
                	AC_CHECK_LIB(thread, __d10_pthread_attr_init,
				G_THREAD_LIBS="-lthread"
				G_THREAD_CFLAGS="-D_POSIX4A_DRAFT10_SOURCE")
        	fi
		dnl ********* HPUX 11 ***********
        	if test "x$G_THREAD_LIBS" = xerror; then
                	AC_CHECK_LIB(pthread, __pthread_attr_init_system,
				G_THREAD_LIBS="-lpthread")
        	fi
                mutex_has_default=yes
                mutex_default_type='pthread_mutex_t'
                mutex_default_init='PTHREAD_MUTEX_INITIALIZER'
                mutex_header_file='pthread.h'
		g_threads_impl="POSIX"
                ;;
        solaris)
		G_THREAD_LIBS=error
                AC_CHECK_LIB(thread, cond_init, G_THREAD_LIBS="-lthread")
                mutex_has_default=yes
                mutex_default_type='mutex_t'
		mutex_default_init="DEFAULTMUTEX"
                mutex_header_file='thread.h'
		g_threads_impl="SOLARIS"
                ;;
	nspr)
		AC_CHECK_LIB(nspr21, PRP_NewNakedCondVar,
			     G_THREAD_LIBS="-lnspr21")
		g_threads_impl="NSPR"
		;;
        none)
		g_threads_impl="NONE"
                ;;
        *)
		g_threads_impl="NONE"
		G_THREAD_LIBS=error
                ;;
esac

if test "x$G_THREAD_LIBS" = xerror; then
        AC_MSG_ERROR($LIBS_NOT_FOUND_1$have_threads$LIBS_NOT_FOUND_2)
fi

AC_MSG_CHECKING(necessary linker options)
AC_MSG_RESULT($G_THREAD_LIBS)

dnl determination of G_THREAD_CFLAGS
dnl ********************************

if test x"$have_threads" != xnone; then
G_THREAD_CFLAGS="$G_THREAD_CFLAGS -D_REENTRANT" # good default guess

    case $host in
	*-aix*)
		G_THREAD_CFLAGS="$G_THREAD_CFLAGS -D_THREAD_SAFE"
		if test x"$GCC" = xyes; then
            	        G_THREAD_CFLAGS="$G_THREAD_CFLAGS -mthreads"
		fi
		;;
	*-freebsd2.2*)
		G_THREAD_CFLAGS="$G_THREAD_CFLAGS -D_THREAD_SAFE"

		# FreeBSD 2.2.x shiped with gcc 2.7.2.x, which doesn't support
		# -mthreads flag.
		;;
    esac

    # if we are not finding the ctime_r function, then we probably are
    # not using the proper multithread flag
    # Note: Digital UNIX 4.0d #defines ctime_r to _Pctime_r for gcc.
    old_CPPFLAGS=$CPPFLAGS
    CPPFLAGS="$CPPFLAGS $G_THREAD_CFLAGS"
    AC_EGREP_HEADER([[^a-zA-Z_](_P)?ctime_r[^a-zA-Z_]], time.h, ,
    G_THREAD_CFLAGS=
    AC_MSG_WARN($FLAG_DOES_NOT_WORK))
    CPPFLAGS=$old_CPPFLAGS

    AC_MSG_CHECKING(necessary compiler options)

    AC_MSG_RESULT($G_THREAD_CFLAGS)
else
    G_THREAD_CFLAGS=
fi

dnl check for mt safe function variants
dnl ***********************************

if test x"$have_threads" != xnone; then
	glib_save_LIBS="$LIBS"
	glib_save_CFLAGS="$CFLAGS"
	# we are not doing the following for now, as this might require glib 
	# to always be linked with the thread libs on some platforms. 
	# LIBS="$LIBS $G_THREAD_LIBS"
	CFLAGS="$CFLAGS $G_THREAD_CFLAGS"
	AC_CHECK_FUNCS(localtime_r rand_r)
	if test "$ac_cv_header_pwd_h" = "yes"; then
		AC_MSG_CHECKING([for getpwuid_r])
	 	AC_CACHE_VAL(ac_cv_func_getpwuid_r,
			[AC_TRY_RUN([#include <errno.h>
				int main () { char buffer[10000], *pointer; 
				char getpwuid_r (long, void*, void*,
					int, void*);
				int error;
				errno = 0;
				error = getpwuid_r (0, &buffer, &buffer, 
					sizeof (buffer), &pointer);
				return errno == ENOSYS || error == ENOSYS;}],
				[ac_cv_func_getpwuid_r=yes],
				[ac_cv_func_getpwuid_r=no])])
		if test "$ac_cv_func_getpwuid_r" = yes; then
			AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_GETPWUID_R)
		else
			AC_MSG_RESULT(no)
		fi
		if test "$ac_cv_func_getpwuid_r" = "yes"; then
			AC_MSG_CHECKING(whether getpwuid_r is posix like)
			# getpwuid_r(0, NULL, NULL, 0) is the signature on
			# solaris, if that is not found, the prog below won't 
			# compile, then the posix signature is assumed as 
			# the default.
			AC_TRY_COMPILE([#include <pwd.h>],
				[getpwuid_r(0, NULL, NULL, 0);],
				[AC_MSG_RESULT(no)],
				[AC_MSG_RESULT(yes)
				AC_DEFINE(HAVE_GETPWUID_R_POSIX)])
		fi
	fi
	if test x"$have_threads" = xposix; then
		LIBS="$LIBS $G_THREAD_LIBS"
		AC_MSG_CHECKING(whether pthread_getspecific is posix like)
		# PCThreads has pthread_getspecific(pthread_key_t, void **);
		AC_TRY_COMPILE([#include <pthread.h>],
			[pthread_getspecific(0,NULL);],
			[AC_MSG_RESULT(no)],
			[AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_PTHREAD_GETSPECIFIC_POSIX)])
		AC_MSG_CHECKING(whether pthread_mutex_trylock is posix like)
		# DCE Threads return 1 as success, posix 0. what a mess.
		AC_TRY_RUN([#include <pthread.h>
			int main () { 
			pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
			return !pthread_mutex_trylock (&mutex); }],
			[AC_MSG_RESULT(no)],
			[AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_PTHREAD_MUTEX_TRYLOCK_POSIX)])
		AC_MSG_CHECKING(whether pthread_cond_timedwait is posix like)
		# DCE Threads return -1 as failure, posix ETIMEDOUT.
		AC_TRY_RUN([#include <pthread.h>
			int main () { 
			pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
			pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
			struct timeval tval;
			struct timespec tspec;
			gettimeofday (&tval, NULL);
			tspec.tv_sec = tval.tv_sec;
			tspec.tv_nsec = 0;
			return pthread_cond_timedwait (&cond,&mutex,&tspec) 
				!= -1;}],
			[AC_MSG_RESULT(no)],
			[AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_PTHREAD_COND_TIMEDWAIT_POSIX)])
	fi
	LIBS="$glib_save_LIBS"
	CFLAGS="$glib_save_CFLAGS"
fi

if test "x$enable_threads" = "xyes"; then
	if test "$ac_cv_func_getpwuid_r" != "yes"; then
		AC_MSG_WARN($FUNC_NO_GETPWUID_R)
	fi
	if test "$ac_cv_func_localtime_r" != "yes"; then
		AC_MSG_WARN($FUNC_NO_LOCALTIME_R)
	fi
fi

AC_DEFINE_UNQUOTED(G_THREAD_SOURCE,"gthread-$have_threads.c")
AC_SUBST(G_THREAD_CFLAGS)
AC_SUBST(G_THREAD_LIBS)

CFLAGS="$CFLAGS $G_THREAD_CFLAGS"

dnl **********************************************
dnl *** GDefaultMutex setup and initialization ***
dnl **********************************************
dnl
dnl if mutex_has_default = yes, we also got
dnl mutex_default_type, mutex_default_init and mutex_header_file
GLIB_IF_VAR_EQ(mutex_has_default, yes,
	GLIB_SIZEOF([#include <$mutex_header_file>],
                    $mutex_default_type,
                    gmutex,
                    )
	GLIB_BYTE_CONTENTS([#include <$mutex_header_file>],
			   $mutex_default_type,
			   gmutex,
			   $glib_cv_sizeof_gmutex,
			   $mutex_default_init)
	,
)


dnl ****************************************
dnl *** GLib POLL* compatibility defines ***
dnl ****************************************
GLIB_SYSDEFS(
[#include <sys/types.h>
#include <sys/poll.h>],
	POLLIN:1 POLLOUT:4 POLLPRI:2 POLLERR:8 POLLHUP:16 POLLNVAL:32,
	glibconfig-sysdefs.h,
	=)


dnl ******************************
dnl *** output the whole stuff ***
dnl ******************************

AC_OUTPUT_COMMANDS([

## Generate `glibconfig.h' in two cases
## 1. `config.status' is run either explicitly, or via configure.
##     Esp. not when it is run in `Makefile' to generate makefiles and
##     config.h
## 2. CONFIG_OTHER is set explicitly
##
## Case 1 is difficult.  We know that `automake' sets one of
## CONFIG_FILES or CONFIG_HEADERS to empty.  This heuristic works
## only when AM_CONFIG_HEADER is set, however.

if test -n "${CONFIG_FILES}" && test -n "${CONFIG_HEADERS}"; then
  # Both CONFIG_FILES and CONFIG_HEADERS are non-empty ==> Case 1
  CONFIG_OTHER=${CONFIG_OTHER:-glibconfig.h}
fi
case "$CONFIG_OTHER" in
*glibconfig.h*)
	echo creating glibconfig.h
	outfile=glibconfig.h-tmp
	cat > $outfile <<\_______EOF
/* glibconfig.h
 *
 * This is a generated file.  Please modify `configure.in'
 */

#ifndef GLIBCONFIG_H
#define GLIBCONFIG_H

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

_______EOF

	if test x$glib_limits_h = xyes; then
	  echo '#include <limits.h>' >> $outfile
	fi
	if test x$glib_float_h = xyes; then
	  echo '#include <float.h>' >> $outfile
	fi
	if test x$glib_values_h = xyes; then
	  echo '#include <values.h>' >> $outfile
	fi
	if test x$g_mutex_header_file != x; then
	  echo '#include <'"$g_mutex_header_file"'>' >> $outfile
	fi
	if test x$glib_sys_poll_h = xyes; then
	  echo '#define GLIB_HAVE_SYS_POLL_H' >> $outfile
	fi

	cat >> $outfile <<_______EOF

#define G_MINFLOAT	$glib_mf
#define G_MAXFLOAT	$glib_Mf
#define G_MINDOUBLE	$glib_md
#define G_MAXDOUBLE	$glib_Md
#define G_MINSHORT	$glib_ms
#define G_MAXSHORT	$glib_Ms
#define G_MININT	$glib_mi
#define G_MAXINT	$glib_Mi
#define G_MINLONG	$glib_ml
#define G_MAXLONG	$glib_Ml

_______EOF


	### this should always be true in a modern C/C++ compiler
	cat >>$outfile <<_______EOF
typedef signed char gint8;
typedef unsigned char guint8;
_______EOF


	if test -n "$gint16"; then
	  cat >>$outfile <<_______EOF
typedef signed $gint16 gint16;
typedef unsigned $gint16 guint16;
_______EOF
	fi


	if test -n "$gint32"; then
	  cat >>$outfile <<_______EOF
typedef signed $gint32 gint32;
typedef unsigned $gint32 guint32;
_______EOF
	fi


	if test -n "$gint64"; then
	  cat >>$outfile <<_______EOF
${glib_warning_guard}#define G_HAVE_GINT64 1

${glib_extension}typedef signed $gint64 gint64;
${glib_extension}typedef unsigned $gint64 guint64;

#define G_GINT64_CONSTANT(val)	$gint64_constant
_______EOF
	fi


	if test -z "$glib_unknown_void_p"; then
	  cat >>$outfile <<_______EOF

#define GPOINTER_TO_INT(p)	((gint)  ${glib_gpi_cast} (p))
#define GPOINTER_TO_UINT(p)	((guint) ${glib_gpui_cast} (p))

#define GINT_TO_POINTER(i)	((gpointer) ${glib_gpi_cast} (i))
#define GUINT_TO_POINTER(u)	((gpointer) ${glib_gpui_cast} (u))
_______EOF
	else
	  echo '#error SIZEOF_VOID_P unknown - This should never happen' >>$outfile
	fi



	cat >>$outfile <<_______EOF
$glib_atexit
$glib_memmove
$glib_defines

$glib_vacopy

#ifdef	__cplusplus
#define	G_HAVE_INLINE	1
#else	/* !__cplusplus */
$glib_inline
#endif	/* !__cplusplus */
_______EOF

	echo >>$outfile
	if test x$g_mutex_has_default = xyes; then
		cat >>$outfile <<_______EOF
$g_enable_threads_def G_THREADS_ENABLED
#define G_THREADS_IMPL_$g_threads_impl_def
typedef struct _GStaticMutex GStaticMutex;
struct _GStaticMutex
{
  struct _GMutex *runtime_mutex;
  union {
    char   pad[$g_mutex_sizeof];
    double dummy_double;
    void  *dummy_pointer;
    long   dummy_long;
  } aligned_pad_u;
};
#define	G_STATIC_MUTEX_INIT	{ NULL, { { $g_mutex_contents} } }
#define	g_static_mutex_get_mutex(mutex) \
  (g_thread_use_default_impl ? ((GMutex*) &((mutex)->aligned_pad_u)) : \
   g_static_mutex_get_mutex_impl (&((mutex)->runtime_mutex)))
_______EOF
	else
		cat >>$outfile <<_______EOF
$g_enable_threads_def G_THREADS_ENABLED
#define G_THREADS_IMPL_$g_threads_impl_def
typedef struct _GMutex* GStaticMutex;
#define G_STATIC_MUTEX_INIT NULL
#define g_static_mutex_get_mutex(mutex) (g_static_mutex_get_mutex_impl (mutex))
_______EOF
	fi

	echo >>$outfile
	g_bit_sizes="16 32"
	if test -n "$gint64"; then
	  g_bit_sizes="$g_bit_sizes 64"
	fi
	for bits in $g_bit_sizes; do
	  cat >>$outfile <<_______EOF
#define GINT${bits}_TO_${g_bs_native}(val)	((gint${bits}) (val))
#define GUINT${bits}_TO_${g_bs_native}(val)	((guint${bits}) (val))
#define GINT${bits}_TO_${g_bs_alien}(val)	((gint${bits}) GUINT${bits}_SWAP_LE_BE (val))
#define GUINT${bits}_TO_${g_bs_alien}(val)	(GUINT${bits}_SWAP_LE_BE (val))
_______EOF
	done

	cat >>$outfile <<_______EOF
#define GLONG_TO_LE(val)	((glong) GINT${glongbits}_TO_LE (val))
#define GULONG_TO_LE(val)	((gulong) GUINT${glongbits}_TO_LE (val))
#define GLONG_TO_BE(val)	((glong) GINT${glongbits}_TO_BE (val))
#define GULONG_TO_BE(val)	((gulong) GUINT${glongbits}_TO_BE (val))
#define GINT_TO_LE(val)		((gint) GINT${gintbits}_TO_LE (val))
#define GUINT_TO_LE(val)	((guint) GUINT${gintbits}_TO_LE (val))
#define GINT_TO_BE(val)		((gint) GINT${gintbits}_TO_BE (val))
#define GUINT_TO_BE(val)	((guint) GUINT${gintbits}_TO_BE (val))
#define G_BYTE_ORDER $g_byte_order

_______EOF

	if test -r glibconfig-sysdefs.h; then
	  cat glibconfig-sysdefs.h >>$outfile
	fi


	cat >>$outfile <<_______EOF

$glib_wc


#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* GLIBCONFIG_H */
_______EOF


	if cmp -s $outfile glibconfig.h; then
	  echo glibconfig.h is unchanged
	  rm -f $outfile
	else
	  mv $outfile glibconfig.h
	fi ;;
esac
],[

# Note that if two cases are the same, case goes with the first one.
# Note also that this is inside an AC_OUTPUT_COMMAND.  We do not depend
# on variable expansion in case labels.  Look at the generated config.status
# for a hint.

case xyes in
x$ac_cv_header_float_h)
  glib_float_h=yes
  glib_mf=FLT_MIN glib_Mf=FLT_MAX
  glib_md=DBL_MIN glib_Md=DBL_MAX
  ;;
x$ac_cv_header_values_h)
  glib_values_h=yes
  glib_mf=MINFLOAT  glib_Mf=MAXFLOAT
  glib_md=MINDOUBLE glib_Md=MAXDOUBLE
  ;;
esac

case xyes in
x$ac_cv_header_limits_h)
  glib_limits_h=yes
  glib_ms=SHRT_MIN glib_Ms=SHRT_MAX
  glib_mi=INT_MIN  glib_Mi=INT_MAX
  glib_ml=LONG_MIN glib_Ml=LONG_MAX
  ;;
x$ac_cv_header_values_h)
  glib_values_h=yes
  glib_ms=MINSHORT glib_Ms=MAXSHORT
  glib_mi=MININT   glib_Mi=MAXINT
  glib_ml=MINLONG  glib_Ml=MAXLONG
  ;;
esac

if test x$ac_cv_header_sys_poll_h = xyes ; then
  glib_sys_poll_h=yes
fi

case 2 in
$ac_cv_sizeof_short)		gint16=short;;
$ac_cv_sizeof_int)		gint16=int;;
esac
case 4 in
$ac_cv_sizeof_short)		gint32=short;;
$ac_cv_sizeof_int)		gint32=int;;
$ac_cv_sizeof_long)		gint32=long;;
esac
case 8 in
$ac_cv_sizeof_int)
  gint64=int
  glib_extension=
  glib_warning_guard=
  gint64_constant='(val)'
  ;;
$ac_cv_sizeof_long)
  gint64=long
  glib_extension=
  glib_warning_guard=
  gint64_constant='(val##L)'
  ;;
$ac_cv_sizeof_long_long)
  gint64='long long'
  glib_extension='G_GNUC_EXTENSION '
  glib_warning_guard="
#if defined (__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 8
#  define G_GNUC_EXTENSION __extension__
#else
#  define G_GNUC_EXTENSION
#endif

"
  gint64_constant='(G_GNUC_EXTENSION (val##LL))'
  ;;
esac

gintbits=`expr $ac_cv_sizeof_int \* 8`
glongbits=`expr $ac_cv_sizeof_long \* 8`


case $ac_cv_sizeof_void_p in
$ac_cv_sizeof_int)  	glib_gpi_cast=''        glib_gpui_cast=''         ;;
$ac_cv_sizeof_long) 	glib_gpi_cast='(glong)' glib_gpui_cast='(gulong)' ;;
*) 			glib_unknown_void_p=yes ;;
esac


case xyes in
x$ac_cv_func_atexit)
  glib_atexit="
#ifdef NeXT /* @#%@! NeXTStep */
# define g_ATEXIT(proc)	(!atexit (proc))
#else
# define g_ATEXIT(proc)	(atexit (proc))
#endif"
  ;;
x$ac_cv_func_on_exit)
  glib_atexit="
#define g_ATEXIT(proc)	(on_exit ((void (*)(int, void*))(proc), NULL))"
  ;;
esac

case xyes in
x$ac_cv_func_memmove)
  glib_memmove='
#define g_memmove(d,s,n) G_STMT_START { memmove ((d), (s), (n)); } G_STMT_END'
  ;;
*)
  glib_memmove="
/* We make the assumption that if memmove isn't available, then
 * bcopy will do the job. This isn't safe everywhere. (bcopy can't
 * necessarily handle overlapping copies) */
#define g_memmove(d,s,n) G_STMT_START { bcopy ((s), (d), (n)); } G_STMT_END"
  ;;
esac

glib_defines="
#define GLIB_MAJOR_VERSION $GLIB_MAJOR_VERSION
#define GLIB_MINOR_VERSION $GLIB_MINOR_VERSION
#define GLIB_MICRO_VERSION $GLIB_MICRO_VERSION
"

case xyes in
x$glib_cv_va_copy)	glib_vacopy='#define G_VA_COPY	va_copy' ;;
x$glib_cv___va_copy)	glib_vacopy='#define G_VA_COPY	__va_copy' ;;
*)			glib_vacopy=''
esac

if test x$glib_cv_va_val_copy = xno; then
  glib_vacopy="\$glib_vacopy
#define G_VA_COPY_AS_ARRAY 1"
fi

if test x$glib_cv_hasinline = xyes; then
    glib_inline='#define G_HAVE_INLINE 1'
fi
if test x$glib_cv_has__inline = xyes; then
    glib_inline="\$glib_inline
#define G_HAVE___INLINE 1"
fi
if test x$glib_cv_has__inline__ = xyes; then
    glib_inline="\$glib_inline
#define G_HAVE___INLINE__ 1"
fi

case xyes in
x$ac_cv_c_bigendian)
  g_byte_order=G_BIG_ENDIAN
  g_bs_native=BE
  g_bs_alien=LE
  ;;
*)
  g_byte_order=G_LITTLE_ENDIAN
  g_bs_native=LE
  g_bs_alien=BE
  ;;
esac

if test x$glib_wchar_h = xyes; then
  glib_wc='
#define G_HAVE_WCHAR_H 1'
fi
if test x$glib_wctype_h = xyes; then
  glib_wc="\$glib_wc
#define G_HAVE_WCTYPE_H 1"
fi
if test x$glib_working_wctype = xno; then
  glib_wc="\$glib_wc
#define G_HAVE_BROKEN_WCTYPE 1"
fi

case x$enable_threads in
xyes)	g_enable_threads_def="#define";;
*)	g_enable_threads_def="#undef ";;
esac

g_threads_impl_def=$g_threads_impl

g_mutex_has_default="$mutex_has_default"
g_mutex_sizeof="$glib_cv_sizeof_gmutex"
g_mutex_contents="$glib_cv_byte_contents_gmutex"
])

AC_OUTPUT([
glib.spec
glibconfig.h.win32
Makefile
glib-config
gmodule/gmoduleconf.h
gmodule/Makefile
gthread/Makefile
docs/Makefile
docs/glib-config.1
tests/Makefile
],[case "$CONFIG_FILES" in
*glib-config*)chmod +x glib-config;;
esac])