[waffle] [PATCH 4/7] cmake: Add option waffle_has_surfaceless_egl

[Chad Versace]

This patch contains just the CMake changes for the new surfaceless_egl
platform. Code will come in the following patches.

Cc: Gurchetan Singh <gurchetansingh at chromium.org>
Cc: Haixia Shi <hshi at chromium.org>
---
 Options.cmake                                       |  3 +++
 cmake/Modules/WaffleDefineCompilerFlags.cmake       |  4 ++++
 cmake/Modules/WaffleDefineInternalOptions.cmake     |  3 ++-
 cmake/Modules/WafflePrintConfigurationSummary.cmake |  3 +++
 cmake/Modules/WaffleValidateOptions.cmake           | 15 ++++++++++++++-
 5 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/Options.cmake b/Options.cmake
index 4f097a0..699ec59 100644
--- a/Options.cmake
+++ b/Options.cmake
@@ -23,11 +23,14 @@ if(waffle_on_linux)
         set(gbm_default OFF)
     endif()
 
+    set(surfaceless_egl_default ${egl_FOUND})
+
     # On Linux, you must enable at least one of the below options.
     option(waffle_has_glx "Build support for GLX" ${glx_default})
     option(waffle_has_wayland "Build support for Wayland" ${wayland_default})
     option(waffle_has_x11_egl "Build support for X11/EGL" ${x11_egl_default})
     option(waffle_has_gbm "Build support for GBM" ${gbm_default})
+    option(waffle_has_surfaceless_egl "Build support for EGL_MESA_platform_surfaceless" ${surfaceless_egl_default})
     option(waffle_has_nacl "Build support for NaCl" OFF)
 
     # NaCl specific settings.
diff --git a/cmake/Modules/WaffleDefineCompilerFlags.cmake b/cmake/Modules/WaffleDefineCompilerFlags.cmake
index 7b67325..4eb4392 100644
--- a/cmake/Modules/WaffleDefineCompilerFlags.cmake
+++ b/cmake/Modules/WaffleDefineCompilerFlags.cmake
@@ -122,6 +122,10 @@ if(waffle_on_linux)
         add_definitions(-DWAFFLE_HAS_GBM)
     endif()
 
+    if(waffle_has_surfaceless_egl)
+        add_definitions(-DWAFFLE_HAS_SURFACELESS_EGL)
+    endif()
+
     if(waffle_has_tls)
         add_definitions(-DWAFFLE_HAS_TLS)
     endif()
diff --git a/cmake/Modules/WaffleDefineInternalOptions.cmake b/cmake/Modules/WaffleDefineInternalOptions.cmake
index 3ef7a25..b3a4f7b 100644
--- a/cmake/Modules/WaffleDefineInternalOptions.cmake
+++ b/cmake/Modules/WaffleDefineInternalOptions.cmake
@@ -1,4 +1,5 @@
-if(waffle_has_wayland OR waffle_has_x11_egl OR waffle_has_gbm)
+if(waffle_has_wayland OR waffle_has_x11_egl OR waffle_has_gbm OR
+   waffle_has_surfaceless_egl)
     set(waffle_has_egl TRUE)
 else(waffle_has_wayland OR waffle_has_x11_egl)
     set(waffle_has_egl FALSE)
diff --git a/cmake/Modules/WafflePrintConfigurationSummary.cmake b/cmake/Modules/WafflePrintConfigurationSummary.cmake
index 1199ea3..f36555c 100644
--- a/cmake/Modules/WafflePrintConfigurationSummary.cmake
+++ b/cmake/Modules/WafflePrintConfigurationSummary.cmake
@@ -47,6 +47,9 @@ endif()
 if(waffle_has_gbm)
     message("    gbm")
 endif()
+if(waffle_has_surfaceless_egl)
+    message("    surfaceless_egl")
+endif()
 if(waffle_on_windows)
     message("    wgl")
 endif()
diff --git a/cmake/Modules/WaffleValidateOptions.cmake b/cmake/Modules/WaffleValidateOptions.cmake
index 1275463..8f83338 100644
--- a/cmake/Modules/WaffleValidateOptions.cmake
+++ b/cmake/Modules/WaffleValidateOptions.cmake
@@ -47,12 +47,14 @@ endif()
 if(waffle_on_linux)
     if(NOT waffle_has_glx AND NOT waffle_has_wayland AND
        NOT waffle_has_x11_egl AND NOT waffle_has_gbm AND
+       NOT waffle_has_surfaceless_egl AND
        NOT waffle_has_nacl)
         message(FATAL_ERROR
                 "Must enable at least one of: "
                 "waffle_has_glx, waffle_has_wayland, "
                 "waffle_has_x11_egl, waffle_has_gbm, "
-                "waffle_has_nacl.")
+                "waffle_has_surfaceless_egl, "
+                "waffle_has_nacl")
     endif()
     if(waffle_has_nacl)
         if(NOT EXISTS ${nacl_sdk_path})
@@ -149,6 +151,11 @@ if(waffle_on_linux)
             message(FATAL_ERROR "x11_egl dependency is missing: ${x11_egl_missing_deps}")
         endif()
     endif()
+    if(waffle_has_surfaceless_egl)
+        if(NOT egl_FOUND)
+            message(FATAL_ERROR "surfaceless_egl dependency is missing: egl")
+        endif()
+    endif()
 elseif(waffle_on_mac)
     if(waffle_has_gbm)
         message(FATAL_ERROR "Option is not supported on Darwin: waffle_has_gbm.")
@@ -162,6 +169,9 @@ elseif(waffle_on_mac)
     if(waffle_has_x11_egl)
         message(FATAL_ERROR "Option is not supported on Darwin: waffle_has_x11_egl.")
     endif()
+    if(waffle_has_surfaceless_egl)
+        message(FATAL_ERROR "Option is not supported on Darwin: waffle_has_surfaceless_egl.")
+    endif()
 elseif(waffle_on_windows)
     if(waffle_has_gbm)
         message(FATAL_ERROR "Option is not supported on Windows: waffle_has_gbm.")
@@ -175,4 +185,7 @@ elseif(waffle_on_windows)
     if(waffle_has_x11_egl)
         message(FATAL_ERROR "Option is not supported on Windows: waffle_has_x11_egl.")
     endif()
+    if(waffle_has_surfaceless_egl)
+        message(FATAL_ERROR "Option is not supported on Darwin: waffle_has_surfaceless_egl.")
+    endif()
 endif()
-- 
2.10.0