-# configure.in --- xscreensaver, Copyright (c) 1997 Jamie Zawinski.
+# configure.in --- xscreensaver, Copyright (c) 1997-2000 Jamie Zawinski.
#
AC_INIT(driver/subprocs.c)
if test -n "$GCC"; then
AC_MSG_RESULT(Turning on gcc compiler warnings.)
CC="$CC -Wall -Wstrict-prototypes -Wnested-externs -Wno-format"
- AC_MSG_RESULT(Disabling C++ comments in ANSI C code.)
- CC="$CC -Wp,-lang-c89"
else
case "$host" in
*-irix5* |*-irix6.[0-3]* )
])
+###############################################################################
+#
+# Functions to figure out how to disable // comments in ANSI C code.
+#
+# (With recent gcc, this is done with "-std=c89". With older gcc, this
+# is done by passing "-lang-c89" to cpp, by passing "-Wp,-lang-c89" to
+# gcc. Old gcc doesn't support -std, and new gcc doesn't support -lang.
+# so much for compatibility!)
+#
+###############################################################################
+
+AC_DEFUN(AC_GCC_ACCEPTS_STD,
+ [if test -n "$GCC"; then
+ AC_CACHE_CHECK([whether gcc accepts -std],
+ ac_cv_gcc_accepts_std,
+ [if ( gcc -E -std=c89 - </dev/null 2>&1 >/dev/null | \
+ grep unrecognized >/dev/null ); then
+ ac_cv_gcc_accepts_std=no
+ else
+ ac_cv_gcc_accepts_std=yes
+ fi])
+ ac_gcc_accepts_std="$ac_cv_gcc_accepts_std"
+ fi
+])
+
+AC_DEFUN(AC_NO_CPLUSPLUS_COMMENTS_IN_C_CODE,
+ [if test -n "$GCC"; then
+ AC_GCC_ACCEPTS_STD
+ AC_MSG_RESULT(Disabling C++ comments in ANSI C code.)
+ #
+ # The reason that // comments are banned from xscreensaver is that gcc is
+ # basically the only compiler in the world that supports them in C code.
+ # All other vendors support them only in their C++ compilers, not in their
+ # ANSI C compilers. This means that it's a portability problem: every time
+ # these comments have snuck into the xscreensaver source code, I've gotten
+ # complaints about it the next day. So we turn off support for them in gcc
+ # as well to prevent them from accidentially slipping in.
+ #
+ if test "$ac_gcc_accepts_std" = yes ; then
+ #
+ # -std=c89 defines __STRICT_ANSI__, which we don't want.
+ # (That appears to be the only additional preprocessor symbol
+ # it defines, in addition to the syntax changes it makes.)
+ #
+ # -std=gnu89 is no good, because // comments were a GNU extension
+ # before they were in the ANSI C 99 spec... (gcc 2.96 permits //
+ # with -std=gnu89 but not with -std=c89.)
+ #
+ CC="$CC -std=c89 -U__STRICT_ANSI__"
+ else
+ # The old way:
+ CC="$CC -Wp,-lang-c89"
+ fi
+ fi
+])
+
+
###############################################################################
#
# Function to figure out how to create directory trees.
i.icmp_id = 0;
i.icmp_seq = 0;
si.sin_family = AF_INET;
- ip.ip_hl = 0;],
+ #if defined(__DECC) || defined(_IP_VHL)
+ ip.ip_vhl = 0;
+ #else
+ ip.ip_hl = 0;
+ #endif
+ ],
[ac_cv_have_icmp=yes],
[ac_cv_have_icmp=no])])
if test "$ac_cv_have_icmp" = yes ; then
# random compiler setup
AC_CANONICAL_HOST
AC_PROG_CC_ANSI
+AC_NO_CPLUSPLUS_COMMENTS_IN_C_CODE
AC_PROG_CPP
AC_C_CONST
AC_C_INLINE
# first check for dpms.h
AC_CHECK_X_HEADER(X11/extensions/dpms.h, [have_dpms=yes])
- # if that succeeded, then check for the -lXdpms
+ # if that succeeded, then check for the DPMS code in the libraries
if test "$have_dpms" = yes; then
+
+ # first look in -lXext (this is where it is with XFree86 4.0)
have_dpms=no
- AC_CHECK_X_LIB(Xdpms, DPMSInfo,
- [have_dpms=yes; SAVER_LIBS="$SAVER_LIBS -lXdpms"], [true],
- -lXext -lX11)
+ AC_CHECK_X_LIB(Xext, DPMSInfo, [have_dpms=yes], [true], -lXext -lX11)
+
+ # if that failed, look in -lXdpms (this is where it was in XFree86 3.x)
+ if test "$have_dpms" = no; then
+ AC_CHECK_X_LIB(Xdpms, DPMSInfo,
+ [have_dpms=yes; XDPMS_LIBS="-lXdpms"], [true],
+ -lXext -lX11)
+ fi
fi
+
# if that succeeded, then we've really got it.
if test "$have_dpms" = yes; then
AC_DEFINE(HAVE_DPMS_EXTENSION)
gtk_path="$gnome_dir:$gtk_path"
fi
- AC_PATH_PROGS(glib_config, glib-config,, $gtk_path)
- AC_PATH_PROGS(gtk_config, gtk-config,, $gtk_path)
+ AC_PATH_PROGS(glib_config, glib12-config glib-config,, $gtk_path)
+ AC_PATH_PROGS(gtk_config, gtk12-config gtk-config,, $gtk_path)
if test "$with_gnome" = yes; then
AC_PATH_PROGS(gnome_config, gnome-config,, $gtk_path)
if test "$have_gtk" = yes; then
AC_CACHE_CHECK([Gtk version number], ac_cv_gtk_version_string,
- [ac_cv_gtk_version_string=`$glib_config --version`])
+ [ac_cv_gtk_version_string=`$gtk_config --version`])
ac_gtk_version_string=$ac_cv_gtk_version_string
# M4 sucks!!
changequote(X,Y)
AC_MSG_CHECKING(for Gnome capplet includes)
AC_CACHE_VAL(ac_cv_gnome_config_cflags,
[if ( $gnome_config --cflags $gnome_config_libs 2>&1 >/dev/null | \
- grep -q Unknown ) ; then
+ grep Unknown >/dev/null ) ; then
ac_cv_gnome_config_cflags=''
else
ac_cv_gnome_config_cflags=`$gnome_config --cflags $gnome_config_libs`
AC_MSG_CHECKING(for Gnome capplet libs)
AC_CACHE_VAL(ac_cv_gnome_config_libs,
[if ( $gnome_config --libs $gnome_config_libs 2>&1 >/dev/null |
- grep -q Unknown ) ; then
+ grep Unknown >/dev/null ) ; then
ac_cv_gnome_config_libs=''
else
ac_cv_gnome_config_libs=`$gnome_config --libs $gnome_config_libs`
#
AC_CACHE_CHECK([whether GL is really MesaGL], ac_cv_have_mesa_gl,
[ac_cv_have_mesa_gl=no
- AC_EGREP_X_HEADER(Mesa, GL/glx.h, [ac_cv_have_mesa_gl=yes])
+ AC_EGREP_X_HEADER(Mesa|MESA, GL/glx.h, [ac_cv_have_mesa_gl=yes])
])
ac_have_mesa_gl=$ac_cv_have_mesa_gl
#line __oline__ "configure"
#include "confdefs.h"
#include <GL/gl.h>
+#ifndef MESA_MAJOR_VERSION
+# include <GL/xmesa.h>
+# define MESA_MAJOR_VERSION XMESA_MAJOR_VERSION
+# define MESA_MINOR_VERSION XMESA_MINOR_VERSION
+#endif
configure: MESA_MAJOR_VERSION MESA_MINOR_VERSION
EOF
#
AC_CHECK_X_LIB($gl_lib_1, glBindTexture, [AC_DEFINE(HAVE_GLBINDTEXTURE)],
[true], $GL_LIBS -lX11 -lXext -lm)
-
-
- # Check whether the `xscreensaver' executable should link against GL.
- # See comments in utils/visual-gl.c for why this is sometimes necessary.
- #
- AC_MSG_CHECKING(whether drastic GL measures must be taken)
- case "$host" in
- *-sgi*)
- AC_MSG_RESULT([yes -- hello, SGI.])
- AC_DEFINE(DAEMON_USE_GL)
- SAVER_GL_SRCS='$(UTILS_SRC)/visual-gl.c'
- SAVER_GL_OBJS='$(UTILS_BIN)/visual-gl.o'
- SAVER_GL_LIBS="$GL_LIBS"
- ;;
- *)
- AC_MSG_RESULT([no -- non-SGI.])
- SAVER_GL_SRCS=''
- SAVER_GL_OBJS=''
- SAVER_GL_LIBS=''
- ;;
- esac
-
fi
elif test "$with_gl" != no; then
AC_SUBST(XPM_LIBS)
AC_SUBST(GL_LIBS)
AC_SUBST(GLE_LIBS)
+AC_SUBST(XDPMS_LIBS)
AC_SUBST(PASSWD_LIBS)
AC_SUBST(INSTALL_SETUID)
AC_SUBST(INSTALL_DIRS)
warnpre
if test "$warning" = long ; then echo '' ; fi
warning=yes
- echo "$warn_prefix $@"
+ rest="$@"
+ echo "$warn_prefix $rest"
}
warnL() {
warnpre
warning=yes
if test "$was" != no ; then echo '' ; fi
- echo "$warn_prefix $@"
+ rest="$@"
+ echo "$warn_prefix $rest"
}
warn2() {
- echo " $@"
+ rest="$@"
+ echo " $rest"
warning=long
}
projects / xscreensaver / blobdiff