336 lines
11 KiB
Plaintext
336 lines
11 KiB
Plaintext
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dnl This file is an input file used by the GNU "autoconf" program to
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dnl generate the file "configure", which is run during Tk installation
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dnl to configure the system for the local environment.
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AC_INIT(tk.h)
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# @(#) configure.in 1.17 95/06/27 21:54:20
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AC_PROG_INSTALL
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AC_PROG_RANLIB
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AC_PREFIX_PROGRAM(wish)
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CC=${CC-cc}
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AC_SUBST(CC)
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AC_HAVE_HEADERS(unistd.h limits.h)
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#--------------------------------------------------------------------
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# Include sys/select.h if it exists and if it supplies things
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# that appear to be useful and aren't already in sys/types.h.
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# This appears to be true only on the RS/6000 under AIX. Some
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# systems like OSF/1 have a sys/select.h that's of no use, and
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# other systems like SCO UNIX have a sys/select.h that's
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# pernicious. If "fd_set" isn't defined anywhere then set a
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# special flag.
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#--------------------------------------------------------------------
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AC_MSG_CHECKING([fd_set and sys/select])
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AC_TRY_COMPILE([#include <sys/types.h>],
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[fd_set readMask, writeMask;], tk_ok=yes, tk_ok=no)
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if test $tk_ok = no; then
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AC_HEADER_EGREP(fd_mask, sys/select.h, tk_ok=yes)
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if test $tk_ok = yes; then
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AC_DEFINE(HAVE_SYS_SELECT_H)
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fi
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fi
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AC_MSG_RESULT($tk_ok)
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if test $tk_ok = no; then
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AC_DEFINE(NO_FD_SET)
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fi
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#--------------------------------------------------------------------
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# Supply a substitute for stdlib.h if it doesn't define strtol,
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# strtoul, or strtod (which it doesn't in some versions of SunOS).
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#--------------------------------------------------------------------
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AC_MSG_CHECKING(stdlib.h)
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AC_HEADER_EGREP(strtol, stdlib.h, tk_ok=yes, tk_ok=no)
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AC_HEADER_EGREP(strtoul, stdlib.h, , tk_ok=no)
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AC_HEADER_EGREP(strtod, stdlib.h, , tk_ok=no)
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if test $tk_ok = no; then
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AC_DEFINE(NO_STDLIB_H)
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fi
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AC_MSG_RESULT($tk_ok)
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#--------------------------------------------------------------------
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# Check for various typedefs and provide substitutes if
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# they don't exist.
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#--------------------------------------------------------------------
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AC_MODE_T
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AC_PID_T
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AC_SIZE_T
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AC_UID_T
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#--------------------------------------------------------------------
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# Locate the X11 header files and the X11 library archive. Try
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# the ac_path_x macro first, but if it doesn't find the X stuff
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# (e.g. because there's no xmkmf program) then check through
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# a list of possible directories. Under some conditions the
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# autoconf macro will return an include directory that contains
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# no include files, so double-check its result just to be safe.
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#--------------------------------------------------------------------
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AC_PATH_X
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not_really_there=""
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if test "$no_x" = ""; then
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if test "$x_includes" = ""; then
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AC_TRY_CPP([#include <X11/XIntrinsic.h>], , not_really_there="yes")
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else
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if test ! -r $x_includes/X11/Intrinsic.h; then
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not_really_there="yes"
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fi
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fi
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fi
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if test "$no_x" = "yes" -o "$not_really_there" = "yes"; then
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echo checking for X11 header files
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XINCLUDES="# no special path needed"
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AC_TRY_CPP([#include <X11/Intrinsic.h>], , XINCLUDES="nope")
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if test "$XINCLUDES" = nope; then
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dirs="/usr/unsupported/include /usr/local/include /usr/X386/include /usr/include/X11R4 /usr/X11R5/include /usr/include/X11R5 /usr/openwin/include /usr/X11/include /usr/sww/include"
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for i in $dirs ; do
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if test -r $i/X11/Intrinsic.h; then
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XINCLUDES=" -I$i"
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fi
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done
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fi
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else
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if test "$x_includes" != ""; then
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XINCLUDES=-I$x_includes
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else
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XINCLUDES="# no special path needed"
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fi
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fi
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if test "$XINCLUDES" = nope; then
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echo "Warning: couldn't find any X11 include files."
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XINCLUDES="# no include files found"
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fi
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AC_SUBST(XINCLUDES)
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if test "$no_x" = yes; then
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XLIBSW=nope
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if test "$XLIBSW" = nope; then
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dirs="/usr/unsupported/lib /usr/local/lib /usr/X386/lib /usr/lib/X11R4 /usr/X11R5/lib /usr/lib/X11R5 /usr/openwin/lib /usr/X11/lib /usr/sww/X11/lib"
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for i in $dirs ; do
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if test -r $i/libX11.a; then
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XLIBSW="-L$i -lX11"
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fi
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done
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fi
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else
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if test "$x_libraries" = ""; then
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XLIBSW=-lX11
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else
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XLIBSW="-L$x_libraries -lX11"
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fi
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fi
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if test "$XLIBSW" = nope ; then
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AC_CHECK_LIB(Xwindow, XCreateWindow, XLIBSW=-lXwindow)
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fi
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if test "$XLIBSW" = nope ; then
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echo "Warning: couldn't find the X11 library archive. Using -lX11."
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XLIBSW=-lX11
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fi
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AC_SUBST(XLIBSW)
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#--------------------------------------------------------------------
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# Check for the existence of various libraries. The order here
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# is important, so that then end up in the right order in the
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# command line generated by make. The -lsocket and -lnsl libraries
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# require a couple of special tricks:
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# 1. Use "connect" and "accept" to check for -lsocket, and
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# "gethostbyname" to check for -lnsl.
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# 2. Use each function name only once: can't redo a check because
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# autoconf caches the results of the last check and won't redo it.
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# 3. Use -lnsl and -lsocket only if they supply procedures that
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# aren't already present in the normal libraries. This is because
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# IRIX 5.2 has libraries, but they aren't needed and they're
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# bogus: they goof up name resolution if used.
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# 4. On some SVR4 systems, can't use -lsocket without -lnsl too.
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# To get around this problem, check for both libraries together
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# if -lsocket doesn't work by itself.
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#--------------------------------------------------------------------
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AC_CHECK_LIB(Xbsd, main, [LIBS="$LIBS -lXbsd"])
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tk_checkBoth=0
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AC_CHECK_FUNC(connect, tk_checkSocket=0, tk_checkSocket=1)
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if test "$tk_checkSocket" = 1; then
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AC_CHECK_LIB(socket, main, LIBS="$LIBS -lsocket", tk_checkBoth=1)
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fi
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if test "$tk_checkBoth" = 1; then
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tk_oldLibs=$LIBS
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LIBS="$LIBS -lsocket -lnsl"
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AC_CHECK_FUNC(accept, tk_checkNsl=0, [LIBS=$tk_oldLibs])
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fi
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AC_CHECK_FUNC(gethostbyname, , AC_CHECK_LIB(nsl, main, [LIBS="$LIBS -lnsl"]))
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#--------------------------------------------------------------------
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# One more check related to the X libraries. The standard releases
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# of Ultrix don't support the "xauth" mechanism, so send won't work
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# unless TK_NO_SECURITY is defined. However, there are usually copies
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# of the MIT X server available as well, which do support xauth.
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# Check for the MIT stuff and use it if it exists.
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#
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# Note: can't use ac_check_lib macro (at least, not in Autoconf 2.1)
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# because it can't deal with the "-" in the library name.
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#--------------------------------------------------------------------
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if test -d /usr/include/mit ; then
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AC_MSG_CHECKING([MIT X libraries])
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tk_oldCFlags=$CFLAGS
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CFLAGS="$CFLAGS -I/usr/include/mit"
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tk_oldLibs=$LIBS
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LIBS="$LIBS -lX11-mit"
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AC_TRY_LINK([
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#include <X11/Xlib.h>
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], [
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XOpenDisplay(0);
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], [
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AC_MSG_RESULT(yes)
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XLIBSW="-lX11-mit"
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XINCLUDES="-I/usr/include/mit"
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], AC_MSG_RESULT(no))
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CFLAGS=$tk_oldCFlags
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LIBS=$tk_oldLibs
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fi
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#--------------------------------------------------------------------
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# Figure out how to find out whether a FILE structure contains
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# buffered readable data. Some known names for the count field:
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# _cnt: Most UNIX systems
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# __cnt: HPUX
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# _r: BSD
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# readCount: Sprite
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# Or, in GNU libc there are two fields, _gptr and _egptr, which
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# have to be compared.
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#--------------------------------------------------------------------
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AC_MSG_CHECKING([count field in FILE structures])
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AC_TRY_COMPILE([#include <stdio.h>],
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[FILE *f = stdin; f->_cnt = 0;], fcnt="_cnt", )
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if test "$fcnt" = ""; then
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AC_TRY_COMPILE([#include <stdio.h>],
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[FILE *f = stdin; f->__cnt = 0;], fcnt="__cnt", )
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fi
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if test "$fcnt" = ""; then
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AC_TRY_COMPILE([#include <stdio.h>],
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[FILE *f = stdin; f->_r = 0;], fcnt="_r", )
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fi
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if test "$fcnt" = ""; then
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AC_TRY_COMPILE([#include <stdio.h>],
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[FILE *f = stdin; f->readCount = 0;], fcnt="readCount", )
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fi
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if test "$fcnt" != ""; then
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AC_DEFINE_UNQUOTED(TK_FILE_COUNT, $fcnt)
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fi
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if test "$fcnt" = ""; then
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AC_TRY_COMPILE([#include <stdio.h>],
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[FILE *f = stdin; f->_gptr = f->egptr;],
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tk_ok=yes, tk_ok=no)
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if test $tk_ok = yes; then
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AC_DEFINE(TK_FILE_GPTR)
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fcnt="_gptr/_egptr"
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fi
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fi
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if test "$fcnt" = ""; then
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AC_TRY_COMPILE([#include <stdio.h>],
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[FILE *f = stdin; f->_IO_read_ptr = f->_IO_read_end;],
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tk_ok=yes, tk_ok=no)
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if test $tk_ok = yes; then
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AC_DEFINE(TK_FILE_READ_PTR)
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fcnt="_IO_read_ptr/_IO_read_end"
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fi
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fi
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if test "$fcnt" = ""; then
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AC_MSG_RESULT([not found; must supply TkReadDataPending procedure])
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else
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AC_MSG_RESULT("$fcnt")
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fi
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#--------------------------------------------------------------------
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# On a few very rare systems, all of the libm.a stuff is
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# already in libc.a. Set compiler flags accordingly.
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# Also, Linux requires the "ieee" library for math to
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# work right (and it must appear before "-lm").
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#--------------------------------------------------------------------
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MATH_LIBS=""
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AC_CHECK_FUNC(sin, , MATH_LIBS="-lm")
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AC_CHECK_LIB(ieee, main, [MATH_LIBS="-lieee $MATH_LIBS"])
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AC_SUBST(MATH_LIBS)
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#--------------------------------------------------------------------
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# If this system doesn't have a memmove procedure, use memcpy
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# instead.
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#--------------------------------------------------------------------
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AC_CHECK_FUNC(memmove, , [AC_DEFINE(memmove, memcpy)])
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#--------------------------------------------------------------------
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# Figure out whether "char" is unsigned. If so, set a
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# #define.
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#--------------------------------------------------------------------
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AC_MSG_CHECKING(type of "char")
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AC_TRY_RUN([
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int main()
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{
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char c;
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int i;
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c = 0377;
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i = c;
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if (i == -1) {
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exit(0);
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}
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exit(1);
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}], tk_signed=1, tk_signed=0)
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if test $tk_signed = 0; then
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AC_DEFINE(CHAR_UNSIGNED)
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AC_MSG_RESULT(unsigned)
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else
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AC_MSG_RESULT(signed)
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fi
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#--------------------------------------------------------------------
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# SGI systems don't use the BSD form of the gettimeofday function,
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# but they have a BSDgettimeofday function that can be used instead.
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#
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# Also, check for the existence of a gettimeofday declaration,
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# to tkPort.h can declare it if it isn't already declared.
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#--------------------------------------------------------------------
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AC_CHECK_FUNC(BSDgettimeofday, AC_DEFINE(HAVE_BSDGETTIMEOFDAY))
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AC_MSG_CHECKING([for gettimeofday declaration])
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AC_EGREP_HEADER(gettimeofday, sys/time.h, AC_MSG_RESULT(present), [
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AC_MSG_RESULT(missing)
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AC_DEFINE(GETTOD_NOT_DECLARED)
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])
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#--------------------------------------------------------------------
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# Under Solaris 2.4, strtod returns the wrong value for the
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# terminating character under some conditions. Check for this
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# and if the problem exists use a substitute procedure
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# "fixstrtod" (provided by Tcl) that corrects the error.
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#--------------------------------------------------------------------
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AC_CHECK_FUNC(strtod, tk_strtod=1, tk_strtod=0)
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if test "$tk_strtod" = 1; then
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AC_MSG_CHECKING([for Solaris 2.4 strtod bug])
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AC_TRY_RUN([
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extern double strtod();
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int main()
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{
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char *string = "NaN";
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char *term;
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strtod(string, &term);
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if ((term != string) && (term[-1] == 0)) {
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exit(1);
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}
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exit(0);
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}], AC_MSG_RESULT(ok), [
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AC_MSG_RESULT(buggy)
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AC_DEFINE(strtod, fixstrtod)
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])
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fi
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AC_OUTPUT(Makefile)
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