meson: build libEGL

This is based heavily on Daniel Stone's work for the same, rebased on
master and with a number of TODO's fixed.

This does not implement glvnd (which is coming in a later patch)

Meson builds egl slightly differently than autotools, namely it doesn't
build an intermediate shared library. It doesn't do this because meson
doesn't have problems with the name of the library being dynamically
generated, so the glvnd and non-glvnd code can follow the same path.

v2: - Don't reuse variable (Eric E.)

Signed-off-by: Dylan Baker <dylanx.c.baker@intel.com>
Tested-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
diff --git a/src/egl/meson.build b/src/egl/meson.build
new file mode 100644
index 0000000..ade6810
--- /dev/null
+++ b/src/egl/meson.build
@@ -0,0 +1,144 @@
+# Copyright © 2017 Intel Corporation
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+c_args_for_egl = []
+link_for_egl = []
+deps_for_egl = []
+incs_for_egl = []
+files_egl = files(
+  'main/eglapi.c',
+  'main/eglapi.h',
+  'main/eglarray.c',
+  'main/eglarray.h',
+  'main/eglconfig.c',
+  'main/eglconfig.h',
+  'main/eglcontext.c',
+  'main/eglcontext.h',
+  'main/eglcurrent.c',
+  'main/eglcurrent.h',
+  'main/egldefines.h',
+  'main/egldisplay.c',
+  'main/egldisplay.h',
+  'main/egldriver.c',
+  'main/egldriver.h',
+  'main/eglfallbacks.c',
+  'main/eglglobals.c',
+  'main/eglglobals.h',
+  'main/eglimage.c',
+  'main/eglimage.h',
+  'main/egllog.c',
+  'main/egllog.h',
+  'main/eglsurface.c',
+  'main/eglsurface.h',
+  'main/eglsync.c',
+  'main/eglsync.h',
+  'main/eglentrypoint.h',
+  'main/egltypedefs.h',
+  'drivers/dri2/egl_dri2.c',
+  'drivers/dri2/egl_dri2.h',
+  'drivers/dri2/egl_dri2_fallbacks.h',
+)
+
+linux_dmabuf_unstable_v1_protocol_c = custom_target(
+  'linux-dmabuf-unstable-v1-protocol.c',
+  input : wayland_dmabuf_xml,
+  output : 'linux-dmabuf-unstable-v1-protocol.c',
+  command : [prog_wl_scanner, 'code', '@INPUT@', '@OUTPUT@'],
+)
+
+linux_dmabuf_unstable_v1_client_protocol_h = custom_target(
+  'linux-dmabuf-unstable-v1-client-protocol.h',
+  input : wayland_dmabuf_xml,
+  output : 'linux-dmabuf-unstable-v1-client-protocol.h',
+  command : [prog_wl_scanner, 'client-header', '@INPUT@', '@OUTPUT@'],
+)
+
+if with_platform_x11
+  files_egl += files('drivers/dri2/platform_x11.c')
+  if with_dri3
+    files_egl += files('drivers/dri2/platform_x11_dri3.c')
+    link_for_egl += libloader_dri3_helper
+  endif
+  deps_for_egl += [dep_xcb_dri2, dep_xcb_xfixes]
+endif
+if with_platform_drm
+  files_egl += files('drivers/dri2/platform_drm.c')
+  link_for_egl += libgbm
+  incs_for_egl += include_directories('../gbm/main')
+endif
+if with_platform_surfaceless
+  files_egl += files('drivers/dri2/platform_surfaceless.c')
+endif
+if with_platform_wayland
+  deps_for_egl += [dep_wayland_client, dep_wayland_server]
+  link_for_egl += libwayland_drm
+  files_egl += files('drivers/dri2/platform_wayland.c')
+  files_egl += [
+    linux_dmabuf_unstable_v1_protocol_c,
+    linux_dmabuf_unstable_v1_client_protocol_h,
+    wayland_drm_client_protocol_h,
+  ]
+  incs_for_egl += include_directories(
+    'wayland/wayland-egl', 'wayland/wayland-drm',
+  )
+endif
+# TODO: android
+
+# TODO: glvnd
+
+if cc.has_function('mincore')
+  c_args_for_egl += '-DHAVE_MINCORE'
+endif
+
+libegl = shared_library(
+  'EGL',
+  files_egl,
+  c_args : [
+    c_vis_args,
+    c_args_for_egl,
+    '-DDEFAULT_DRIVER_DIR="@0@"'.format(dri_driver_dir),
+    '-D_EGL_BUILT_IN_DRIVER_DRI2',
+    '-D_EGL_NATIVE_PLATFORM=_EGL_PLATFORM_@0@'.format(egl_native_platform.to_upper()),
+  ],
+  include_directories : [
+    incs_for_egl, inc_include, inc_src, inc_loader, inc_gbm,
+    include_directories('main'),
+  ],
+  link_with : [link_for_egl, libloader, libxmlconfig, libglapi, libmesa_util],
+  link_args : [ld_args_bsymbolic, ld_args_gc_sections],
+  dependencies : [deps_for_egl, dep_dl, dep_libdrm, dep_clock, dep_thread],
+  install : true,
+  version : '1.0.0',
+)
+
+pkg.generate(
+  name : 'egl',
+  description : 'Mesa EGL Library',
+  version : meson.project_version(),
+  libraries : libegl,
+  libraries_private: gl_priv_libs,
+  requires_private : gl_priv_reqs,
+  extra_cflags : gl_pkgconfig_c_flags,
+)
+
+if with_tests
+  test('egl-symbols-check', find_program('egl-symbols-check'))
+  test('egl-entrypoint-check', find_program('egl-entrypoint-check'))
+endif