[PULL 14/14] opengl: build opengl helper code modular

[Gerd Hoffmann <kraxel@redhat.com>]

Removes opengl dependency from core qemu.  The number of shared
libraries for qemu-system-x86_64 goes down from 66 to 60 on my system.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20201019075224.14803-15-kraxel@redhat.com
---
 util/module.c  | 7 +++++++
 ui/meson.build | 8 +++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/util/module.c b/util/module.c
index 21237dcc24df..fe3b82dd4d37 100644
--- a/util/module.c
+++ b/util/module.c
@@ -181,6 +181,13 @@ static const struct {
     { "hw-display-qxl", "ui-spice-core" },
     { "ui-spice-app",   "ui-spice-core" },
     { "ui-spice-app",   "chardev-spice" },
+
+#ifdef CONFIG_OPENGL
+    { "ui-egl-headless", "ui-opengl"    },
+    { "ui-gtk",          "ui-opengl"    },
+    { "ui-sdl",          "ui-opengl"    },
+    { "ui-spice-core",   "ui-opengl"    },
+#endif
 };
 #endif
 
diff --git a/ui/meson.build b/ui/meson.build
index 537e5e067358..5d4906c023b9 100644
--- a/ui/meson.build
+++ b/ui/meson.build
@@ -33,7 +33,6 @@ vnc_ss.add(zlib, png, jpeg)
 vnc_ss.add(when: sasl, if_true: files('vnc-auth-sasl.c'))
 softmmu_ss.add_all(when: vnc, if_true: vnc_ss)
 softmmu_ss.add(when: vnc, if_false: files('vnc-stubs.c'))
-softmmu_ss.add(when: [opengl, 'CONFIG_OPENGL'], if_true: files('shader.c', 'console-gl.c', 'egl-helpers.c', 'egl-context.c'))
 specific_ss.add(when: ['CONFIG_SOFTMMU'], if_true: opengl)
 
 ui_modules = {}
@@ -44,6 +43,13 @@ if curses.found()
   ui_modules += {'curses' : curses_ss}
 endif
 
+if config_host.has_key('CONFIG_OPENGL')
+  opengl_ss = ss.source_set()
+  opengl_ss.add(when: [opengl, pixman, 'CONFIG_OPENGL'],
+               if_true: files('shader.c', 'console-gl.c', 'egl-helpers.c', 'egl-context.c'))
+  ui_modules += {'opengl' : opengl_ss}
+endif
+
 if config_host.has_key('CONFIG_OPENGL_DMABUF')
   egl_headless_ss = ss.source_set()
   egl_headless_ss.add(when: [opengl, pixman, 'CONFIG_OPENGL_DMABUF'],
-- 
2.27.0