_c_helper_fieldaccess_expr: remove handling for empty sep

[free-sw/xcb/libxcb] / m4 / xcb.m4

diff --git a/m4/xcb.m4 b/m4/xcb.m4
index ad24bc2..a43082a 100644 (file)
--- a/m4/xcb.m4
+++ b/m4/xcb.m4
@@ -31,95 +31,6 @@ extern void f(int);
 CFLAGS=${save_CFLAGS}
 ])
 
-dnl Configure script for doxygen
-dnl Vincent Torri 2006-05-11
-dnl
-dnl XCB_CHECK_DOXYGEN([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
-dnl Test for the doxygen program, and define BUILD_DOCS and DOXYGEN.
-dnl
-AC_DEFUN([XCB_CHECK_DOXYGEN],
-[
-DOXYGEN="doxygen"
-
-dnl
-dnl Disable the build of the documentation
-dnl
-AC_ARG_ENABLE(
-   [build_docs],
-   AC_HELP_STRING(
-      [--disable-build-docs],
-      [Disable the build of the documentation]),
-   [if test x"$enableval" != x"yes" ; then
-       enable_build_docs="no"
-    else
-       enable_build_docs="yes"
-    fi],
-   [enable_build_docs="yes"])
-
-if test "$enable_build_docs" = "no" ; then
-    BUILD_DOCS=no
-else
-dnl
-dnl Get the prefix where doxygen is installed.
-dnl
-AC_ARG_WITH(
-   [doxygen],
-   AC_HELP_STRING(
-      [--with-doxygen=FILE],
-      [doxygen program to use (eg /usr/bin/doxygen)]),
-   dnl
-   dnl Check the given doxygen program.
-   dnl
-   [DOXYGEN=${withval}
-    AC_CHECK_PROG(
-       [BUILD_DOCS],
-       [${DOXYGEN}],
-       [yes],
-       [no])
-    if test $BUILD_DOCS = no; then
-       echo "WARNING:"
-       echo "The doxygen program you specified:"
-       echo "$DOXYGEN"
-       echo "was not found.  Please check the path and make sure "
-       echo "the program exists and is executable."
-       AC_MSG_WARN(
-          [Warning: no doxygen detected. Documentation will not be built])
-    fi],
-   [AC_CHECK_PROG(
-       [BUILD_DOCS],
-       [${DOXYGEN}],
-       [yes],
-       [no])
-    if test ${BUILD_DOCS} = no; then
-       echo "WARNING:"
-       echo "The doxygen program was not found in your execute"
-       echo "You may have doxygen installed somewhere not covered by your path."
-       echo ""
-       echo "If this is the case make sure you have the packages installed, AND"
-       echo "that the doxygen program is in your execute path (see your"
-       echo "shell manual page on setting the \$PATH environment variable), OR"
-       echo "alternatively, specify the program to use with --with-doxygen."
-       AC_MSG_WARN(
-          [Warning: no doxygen detected. Documentation will not be built])
-    fi])
-    AC_PATH_PROG(DOT, dot, no)
-    if test "$DOT" = "no"; then
-        AC_MSG_WARN([Warning: no dot detected. Documentation will not be built])
-       BUILD_DOCS="no"
-    fi
-fi
-AC_MSG_CHECKING([whether documentation is built])
-AC_MSG_RESULT([${BUILD_DOCS}])
-
-dnl
-dnl Substitution
-dnl
-AC_SUBST([DOXYGEN])
-
-AM_CONDITIONAL(BUILD_DOCS, test "x$BUILD_DOCS" = "xyes")
-
-])
-
 dnl Detection and configuration of the visibility feature of gcc
 dnl Vincent Torri 2006-02-11
 dnl
@@ -127,15 +38,32 @@ dnl XCB_EXTENSION(name, default)
 dnl set the X extension
 dnl
 AC_DEFUN([XCB_EXTENSION],
-[
+[dnl
 pushdef([UP], translit([$1], [-a-z], [_A-Z]))dnl
 pushdef([DOWN], translit([$1], [A-Z], [a-z]))dnl
+dnl
+m4_if([$2], [yes], [m4_define([xcb_defopt], [yes])],
+      [$2], [no],  [m4_define([xcb_defopt], [no])],
+      m4_define([xcb_defopt], [auto]))dnl
 
 AC_ARG_ENABLE(DOWN,
-    [AS_HELP_STRING([--enable-[]DOWN], [Build XCB $1 Extension (default: $2)])],
+    [AS_HELP_STRING([--enable-[]DOWN],
+                    [Build XCB $1 Extension (default: ]xcb_defopt[)])],
     [BUILD_[]UP=$enableval],
-    [BUILD_[]UP=$2])
+    [BUILD_[]UP=xcb_defopt])
+dnl
+m4_if(xcb_defopt, [auto], [
+# This extension has a default value of "auto" and depends on the value of $2
+if test "x$BUILD_[]UP" = "xauto" ; then
+    BUILD_[]UP=$2
+fi
+if test "x$BUILD_[]UP" = "xyes" ; then
+    if test "x$2" = "xno" ; then
+      AC_MSG_ERROR([Extension []UP requested, but dependencies are not met])
+    fi
+fi])
 
+m4_undefine([xcb_defopt])dnl
 AM_CONDITIONAL(BUILD_[]UP, [test "x$BUILD_[]UP" = "xyes"])
 ])