fixed cacheing of some values (using code from Samba)

[rsync/rsync.git] / configure.in

dnl Process this file with autoconf to produce a configure script.
AC_INIT(byteorder.h)
AC_CONFIG_HEADER(config.h)

AC_CANONICAL_SYSTEM
AC_VALIDATE_CACHE_SYSTEM_TYPE

dnl Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL
AC_SUBST(SHELL)

AC_CHECK_PROG(HAVE_REMSH, remsh, 1, 0)
AC_DEFINE_UNQUOTED(HAVE_REMSH, $HAVE_REMSH)

AC_HEADER_DIRENT
AC_HEADER_TIME
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(sys/fcntl.h sys/select.h fcntl.h sys/time.h sys/unistd.h unistd.h utime.h grp.h)
AC_CHECK_HEADERS(compat.h sys/param.h ctype.h sys/wait.h sys/ioctl.h)
AC_CHECK_HEADERS(sys/filio.h string.h stdlib.h sys/socket.h sys/mode.h)
AC_CHECK_HEADERS(glob.h)

AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(short)

AC_C_INLINE

AC_TYPE_SIGNAL
AC_TYPE_UID_T
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_SIZE_T
AC_TYPE_PID_T
AC_STRUCT_ST_RDEV
AC_CHECK_TYPE(ino_t,unsigned)

AC_CACHE_CHECK([for errno in errno.h],samba_cv_errno, [
    AC_TRY_COMPILE([#include <errno.h>],[int i = errno],
	samba_cv_errno=yes,samba_cv_have_errno_decl=no)])
if test x"$samba_cv_errno" = x"yes"; then
   AC_DEFINE(HAVE_ERRNO_DECL)
fi

AC_FUNC_MEMCMP
AC_FUNC_UTIME_NULL
AC_CHECK_FUNCS(mmap munmap waitpid getcwd strdup strerror chown chmod mknod)
AC_CHECK_FUNCS(fchmod fstat strchr readlink link utime utimes strftime)
AC_CHECK_FUNCS(memmove getopt_long lchown vsnprintf snprintf setsid glob strpbrk)

echo $ac_n "checking for working fnmatch... $ac_c"
AC_TRY_RUN([#include <fnmatch.h>
main() { exit(fnmatch("*.o", "x.o", 0) == 0? 0: 1); }],
echo yes;AC_DEFINE(HAVE_FNMATCH), 
echo no)

AC_CACHE_CHECK([for long long],samba_cv_have_longlong,[
AC_TRY_RUN([#include <stdio.h>
main() { long long x = 1000000; x *= x; exit(((x/1000000) == 1000000)? 0: 1); }],
samba_cv_have_longlong=yes,samba_cv_have_longlong=no,samba_cv_have_longlong=cross)])
if test x"$samba_cv_have_longlong" = x"yes"; then
    AC_DEFINE(HAVE_LONGLONG)
fi

AC_CACHE_CHECK([for off64_t],samba_cv_HAVE_OFF64_T,[
AC_TRY_RUN([#include <stdio.h>
#include <sys/stat.h>
main() { struct stat64 st; off64_t s; if (sizeof(off_t) == sizeof(off64_t)) exit(1); exit((lstat64("/dev/null", &st)==0)?0:1); }],
samba_cv_HAVE_OFF64_T=yes,samba_cv_HAVE_OFF64_T=no,samba_cv_HAVE_OFF64_T=cross)])
if test x"$samba_cv_HAVE_OFF64_T" = x"yes"; then
    AC_DEFINE(HAVE_OFF64_T)
fi

echo $ac_n "checking for short ino_t ... $ac_c"
AC_TRY_RUN([#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
main() { if (sizeof(ino_t) < sizeof(unsigned int)) return 0; return 1; }],
echo yes;AC_DEFINE(HAVE_SHORT_INO_T), 
echo no)

AC_CACHE_CHECK([for unsigned char],samba_cv_HAVE_UNSIGNED_CHAR,[
AC_TRY_RUN([#include <stdio.h>
main() { char c; c=250; exit((c > 0)?0:1); }],
samba_cv_HAVE_UNSIGNED_CHAR=yes,samba_cv_HAVE_UNSIGNED_CHAR=no,samba_cv_HAVE_UNSIGNED_CHAR=cross)])
if test x"$samba_cv_HAVE_UNSIGNED_CHAR" = x"yes"; then
    AC_DEFINE(HAVE_UNSIGNED_CHAR)
fi

AC_CACHE_CHECK([for broken readdir],samba_cv_HAVE_BROKEN_READDIR,[
AC_TRY_RUN([#include <sys/types.h>
#include <dirent.h>
main() { struct dirent *di; DIR *d = opendir("."); di = readdir(d);
if (di && di->d_name[-2] == '.' && di->d_name[-1] == 0 &&
di->d_name[0] == 0) exit(0); exit(1);} ],
samba_cv_HAVE_BROKEN_READDIR=yes,samba_cv_HAVE_BROKEN_READDIR=no,samba_cv_HAVE_BROKEN_READDIR=cross)])
if test x"$samba_cv_HAVE_BROKEN_READDIR" = x"yes"; then
    AC_DEFINE(HAVE_BROKEN_READDIR)
fi

AC_CACHE_CHECK([for utimbuf],samba_cv_HAVE_UTIMBUF,[
AC_TRY_COMPILE([#include <sys/types.h>
#include <utime.h>],
[struct utimbuf tbuf;  tbuf.actime = 0; tbuf.modtime = 1; exit(utime("foo.c",&tbuf));],
samba_cv_HAVE_UTIMBUF=yes,samba_cv_HAVE_UTIMBUF=no,samba_cv_HAVE_UTIMBUF=cross)])
if test x"$samba_cv_HAVE_UTIMBUF" = x"yes"; then
    AC_DEFINE(HAVE_UTIMBUF)
fi

# The following test taken from the cvs sources
# If we can't find connect, try looking in -lsocket, -lnsl, and -linet.
# The Irix 5 libc.so has connect and gethostbyname, but Irix 5 also has
# libsocket.so which has a bad implementation of gethostbyname (it
# only looks in /etc/hosts), so we only look for -lsocket if we need
# it.
AC_CHECK_FUNCS(connect)
if test x"$ac_cv_func_connect" = x"no"; then
    case "$LIBS" in
    *-lnsl*) ;;
    *) AC_CHECK_LIB(nsl_s, printf) ;;
    esac
    case "$LIBS" in
    *-lnsl*) ;;
    *) AC_CHECK_LIB(nsl, printf) ;;
    esac
    case "$LIBS" in
    *-lsocket*) ;;
    *) AC_CHECK_LIB(socket, connect) ;;
    esac
    case "$LIBS" in
    *-linet*) ;;
    *) AC_CHECK_LIB(inet, connect) ;;
    esac
    dnl We can't just call AC_CHECK_FUNCS(connect) here, because the value
    dnl has been cached.
    if test x"$ac_cv_lib_socket_connect" = x"yes" || 
       test x"$ac_cv_lib_inet_connect" = x"yes"; then
        # ac_cv_func_connect=yes
        # don't!  it would cause AC_CHECK_FUNC to succeed next time configure is run
        AC_DEFINE(HAVE_CONNECT)
    fi
fi

#
# The following test was mostly taken from the tcl/tk plus patches
#
echo $ac_n "checking whether -c -o works ... $ac_c"
rm -rf conftest*
cat > conftest.$ac_ext <<EOF
int main() { return 0; }
EOF
${CC-cc} -c -o conftest..o conftest.$ac_ext
if test -f conftest..o; then
    OBJ_SAVE="#"
    OBJ_RESTORE="#"
    CC_SHOBJ_FLAG='-o $@'
    echo yes
else
    OBJ_SAVE='	@b=`basename $@ .o`;rm -f $$b.o.sav;if test -f $$b.o; then mv $$b.o $$b.o.sav;fi;'
    OBJ_RESTORE='	@b=`basename $@ .o`;if test "$$b.o" != "$@"; then mv $$b.o $@; if test -f $$b.o.sav; then mv $$b.o.sav $$b.o; fi; fi'
    CC_SHOBJ_FLAG=""
    echo no
fi
rm -rf conftest*
AC_SUBST(OBJ_SAVE)
AC_SUBST(OBJ_RESTORE)
AC_SUBST(CC_SHOBJ_FLAG)


AC_OUTPUT(Makefile lib/dummy zlib/dummy)