evas: add eglfs evas module.

EGL Fullscreen is a module intended to support many proprietary GL driver that come
with custom API to create framebuffer/window. This one is starting by covering Android
with libhybris/hwcomposer. Later on, it should be able to support easily the Raspberry Pi
driver.

At this moment this does not work properly. Activate it at your own risk ! Do not report
bug if you don't know what you are doing :-) A backend for Ecore_Evas will come later on
along with a patch for Ecore_FB to use libinput. Finally a few patch should hopefully
enable this backend to work and compile more easily (relying on proper header detection
and dlopen/dlsym for access to proprietary function).

You can read more about the goal of this patch by reading our wiki at :
https://phab.enlightenment.org/w/boot2efl/

Signed-off-by: Cedric Bail <cedric@osg.samsung.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/m4/evas_check_engine.m4 b/m4/evas_check_engine.m4
index 42ecc892d8..e38589c48a 100644
--- a/m4/evas_check_engine.m4
+++ b/m4/evas_check_engine.m4
@@ -661,6 +661,49 @@ AS_IF([test "x${have_dep}" = "xyes"], [$4], [$5])
 
 ])
 
+dnl use: EVAS_CHECK_ENGINE_DEP_EGLFS(engine, simple, want_static[, ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+
+AC_DEFUN([EVAS_CHECK_ENGINE_DEP_EGLFS],
+[
+
+requirement=""
+have_dep="no"
+have_hw_dep="no"
+evas_engine_[]$1[]_cflags=""
+evas_engine_[]$1[]_libs=""
+
+if test "x${with_opengl}" = "xes" ; then
+   gl_library="glesv2"
+else
+   AC_MSG_ERROR([We do not support Eglfs without OpenGL ES. Please consider OpenGL ES if you want to use it.])
+fi
+
+PKG_CHECK_EXISTS([egl >= 7.10 ${gl_library}],
+   [
+    have_dep="yes"
+    requirement="egl >= 7.10 ${gl_library}"
+   ],
+   [have_dep="no"])
+
+if test "x${have_dep}" = "xyes" ; then
+   if test "x$3" = "xstatic" ; then
+      requirements_pc_evas="${requirement} ${requirements_pc_evas}"
+      requirements_pc_deps_evas="${requirement} ${requirements_pc_deps_evas}"
+   else
+      PKG_CHECK_MODULES([EGLFS], [${requirement}])
+      evas_engine_[]$1[]_cflags="${EGLFS_CFLAGS}"
+      evas_engine_[]$1[]_libs="${EGLFS_LIBS}"
+      evas_engine_gl_common_libs="$evas_engine_[]$1[]_libdirs -lGLESv2 -lm -lEGL"
+   fi
+fi
+
+AC_SUBST([evas_engine_$1_cflags])
+AC_SUBST([evas_engine_$1_libs])
+
+AS_IF([test "x${have_dep}" = "xyes"], [$4], [$5])
+
+])
+
 
 dnl use: EVAS_ENGINE(name, want_engine, [DEPENDENCY-CHECK-CODE])
 dnl