[PATCH 1/7] Make XTrans FD passing support optional. Define only on Linux

[Keith Packard]

Until other operating systems have a libXtrans port for FD passing,
disable this on non-Linux systems.

Note that this define affects how libXtrans gets built into the X
server, which is why it need only define the symbol

Signed-off-by: Keith Packard <keithp at keithp.com>
---
 configure.ac             | 35 +++++++++++++++++++++++++++++++++++
 include/dix-config.h.in  |  3 +++
 include/xorg-config.h.in |  3 +++
 include/xorg-server.h.in |  3 +++
 4 files changed, 44 insertions(+)

diff --git a/configure.ac b/configure.ac
index 6925df8..12610e4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1118,6 +1118,41 @@ case "$DRI2,$HAVE_DRI2PROTO" in
 esac
 AM_CONDITIONAL(DRI2, test "x$DRI2" = xyes)
 
+AC_ARG_ENABLE(xtrans-send-fds,	AS_HELP_STRING([--disable-xtrans-send-fds], [Use Xtrans support for fd passing (default: auto)]), [XTRANS_SEND_FDS=$enableval], [XTRANS_SEND_FDS=auto])
+
+case "x$XTRANS_SEND_FDS" in
+xauto)
+	case "$host_os" in
+	linux*)
+		XTRANS_SEND_FDS=yes
+		;;
+	*)
+		XTRANS_SEND_FDS=no
+		;;
+	esac
+esac
+
+case "x$XTRANS_SEND_FDS" in
+xyes)
+	AC_DEFINE(XTRANS_SEND_FDS, 1, [Enable xtrans fd passing support])
+	;;
+esac
+
+case "$DRI3,$XTRANS_SEND_FDS" in
+	yes,yes | auto,yes)
+		;;
+	yes,no)
+		AC_MSG_ERROR([DRI3 requested, but xtrans fd passing support not found.])
+		DRI3=no
+		;;
+	no,*)
+		;;
+	*)
+		AC_MSG_NOTICE([DRI3 disabled because dri3proto not found.])
+		DRI3=no
+		;;
+esac
+
 PKG_CHECK_MODULES([DRI3PROTO], $DRI3PROTO,
                   [HAVE_DRI3PROTO=yes], [HAVE_DRI3PROTO=no])
 
diff --git a/include/dix-config.h.in b/include/dix-config.h.in
index 156383b..e4eea8d 100644
--- a/include/dix-config.h.in
+++ b/include/dix-config.h.in
@@ -452,4 +452,7 @@
 /* Have support for X shared memory fence library (xshmfence) */
 #undef HAVE_XSHMFENCE
 
+/* Use XTrans FD passing support */
+#undef XTRANS_SEND_FDS
+
 #endif /* _DIX_CONFIG_H_ */
diff --git a/include/xorg-config.h.in b/include/xorg-config.h.in
index e3444da..48bab49 100644
--- a/include/xorg-config.h.in
+++ b/include/xorg-config.h.in
@@ -148,4 +148,7 @@
 /* Have support for X shared memory fence library (xshmfence) */
 #undef HAVE_XSHMFENCE
 
+/* Use XTrans FD passing support */
+#undef XTRANS_SEND_FDS
+
 #endif /* _XORG_CONFIG_H_ */
diff --git a/include/xorg-server.h.in b/include/xorg-server.h.in
index 960817e..0c651bf 100644
--- a/include/xorg-server.h.in
+++ b/include/xorg-server.h.in
@@ -221,4 +221,7 @@
 /* Have support for X shared memory fence library (xshmfence) */
 #undef HAVE_XSHMFENCE
 
+/* Use XTrans FD passing support */
+#undef XTRANS_SEND_FDS
+
 #endif /* _XORG_SERVER_H_ */
-- 
1.8.4.2