diff options
Diffstat (limited to 'libxcb/m4')
| -rw-r--r-- | libxcb/m4/xcb.m4 | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/libxcb/m4/xcb.m4 b/libxcb/m4/xcb.m4 index 32e852dd5..a43082a8e 100644 --- a/libxcb/m4/xcb.m4 +++ b/libxcb/m4/xcb.m4 @@ -38,15 +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"]) ]) |