[PATCH vkd3d v2 4/7] build: Make it possible to disable building the demos.

[Chip Davis]

Signed-off-by: Chip Davis <cdavis at codeweavers.com>
---

Notes:
    Try 2: Only enable demos if XCB is present.

 Makefile.am  |  4 ++++
 configure.ac | 11 ++++++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 4ee92a1..42ec9e7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -131,16 +131,20 @@ TESTS = $(vkd3d_tests) $(vkd3d_cross_tests)
 tests_d3d12_LDADD = $(LDADD) @PTHREAD_LIBS@
 tests_vkd3d_api_LDADD = libvkd3d.la @VULKAN_LIBS@
 
+if BUILD_DEMOS
 DEMOS_LDADD = $(LDADD) libvkd3d-shader.la @XCB_LIBS@ @VULKAN_LIBS@
 DEMOS_CFLAGS = $(AM_CFLAGS) @XCB_CFLAGS@
 noinst_PROGRAMS += $(vkd3d_demos)
+endif
 EXTRA_DIST += $(vkd3d_test_headers) $(vkd3d_demos_headers)
 
+if BUILD_DEMOS
 demos_gears_CFLAGS = $(DEMOS_CFLAGS)
 demos_gears_LDADD = $(DEMOS_LDADD) -lm
 
 demos_triangle_CFLAGS = $(DEMOS_CFLAGS)
 demos_triangle_LDADD = $(DEMOS_LDADD)
+endif
 
 VKD3D_V_WIDL = $(vkd3d_v_widl_ at AM_V@)
 vkd3d_v_widl_ = $(vkd3d_v_widl_ at AM_DEFAULT_V@)
diff --git a/configure.ac b/configure.ac
index 973105b..e4d0d24 100644
--- a/configure.ac
+++ b/configure.ac
@@ -85,7 +85,16 @@ AS_IF([test "x$with_spirv_tools" = "xyes"],
       [AC_DEFINE([HAVE_SPIRV_TOOLS], [1], [Define to 1 if you have SPIRV-Tools.])
       HAVE_SPIRV_TOOLS=yes])])
 
-PKG_CHECK_MODULES([XCB], [xcb xcb-keysyms])
+PKG_CHECK_MODULES([XCB], [xcb xcb-keysyms],
+				  [AC_DEFINE([HAVE_XCB], [1], [Define to 1 if you have libxcb.])
+				   HAVE_XCB=yes])
+
+AS_IF([test "x$HAVE_XCB" = xyes],
+      [enable_demos_default=yes],
+      [enable_demos_default=no])
+AC_ARG_ENABLE([demos], AS_HELP_STRING([--enable-demos], [Build demo programs]),,
+              [enable_demos=$enable_demos_default])
+AM_CONDITIONAL(BUILD_DEMOS, [test "x$enable_demos" != "xno"])
 
 dnl Check for functions
 VKD3D_CHECK_FUNC([HAVE_BUILTIN_CLZ], [__builtin_clz], [__builtin_clz(0)])
-- 
2.18.0