Try pkg-config to find GLEW if no override path was specified. Simplifies build on Ubuntu

1 files changed, 51 insertions, 43 deletions

diff --git a/tests/FindGLEW.cmake b/tests/FindGLEW.cmake
index 1b0cac4..b7e37d0 100644
--- a/tests/FindGLEW.cmake
+++ b/tests/FindGLEW.cmake
@@ -3,55 +3,63 @@
 # Once done this will define
 #
 # GLEW_FOUND
-# GLEW_INCLUDE_PATH
+# GLEW_INCLUDE_DIR
 # GLEW_LIBRARY
 # 
 
 # a few lines of this file are based on the LGPL code found at 
 # http://openlibraries.org/browser/trunk/FindGLEW.cmake?rev=1383 
 
+include(FindPkgConfig)
 
-IF (WIN32 AND MSVC)
-	IF (WIN32_STATIC_BUILD) # passed from caller
-		SET(GLEW_LIB_SEARCH_NAME glew32s.lib) # static, non-debug (Release)
-	ELSE ()
-		SET(GLEW_LIB_SEARCH_NAME glew32.lib) # other. untested with OpenSCAD
-	ENDIF()
-ELSE () # GCC
-	SET(GLEW_LIB_SEARCH_NAME "libglew32s.a")
-ENDIF ()
+if (PKG_CONFIG_FOUND)
+  message("Doing pkg config glew check...")
+  pkg_check_modules(GLEW glew>=1.5)
+endif()
 
-IF (WIN32)
-	FIND_PATH( GLEW_INCLUDE_PATH GL/glew.h
-		$ENV{PROGRAMFILES}/GLEW/include
-		${PROJECT_SOURCE_DIR}/src/nvgl/glew/include
-		DOC "The directory where GL/glew.h resides")
-	FIND_LIBRARY( GLEW_LIBRARY
-		NAMES ${GLEW_LIB_SEARCH_NAME}
-		PATHS
-		$ENV{PROGRAMFILES}/GLEW/lib
-		${PROJECT_SOURCE_DIR}/src/nvgl/glew/bin
-		${PROJECT_SOURCE_DIR}/src/nvgl/glew/lib
-		DOC "The GLEW library")
-ELSE (WIN32)
-        message(STATUS "GLEW_DIR: " ${GLEW_DIR})
-	FIND_PATH( GLEW_INCLUDE_PATH GL/glew.h
-                HINTS ${GLEW_DIR}/include 
-		PATHS /usr/include /usr/local/include /usr/pkg/include
-                NO_DEFAULT_PATH
-		DOC "The directory where GL/glew.h resides")
-	FIND_LIBRARY( GLEW_LIBRARY
-		NAMES GLEW glew
-		HINTS ${GLEW_DIR}/lib 
-		PATHS /usr/lib /usr/local/lib /usr/pkg/lib
-                NO_DEFAULT_PATH
-		DOC "The GLEW library")
-ENDIF (WIN32)
+if (GLEW_FOUND)
+  set(GLEW_INCLUDE_DIR ${GLEW_INCLUDE_DIRS})  
+  set(GLEW_LIBRARY ${GLEW_LDFLAGS})  
+else()
+  if (WIN32 AND MSVC)
+    if (WIN32_STATIC_BUILD) # passed from caller
+      set(GLEW_LIB_SEARCH_NAME glew32s.lib) # static, non-debug (Release)
+    else ()
+      set(GLEW_LIB_SEARCH_NAME glew32.lib) # other. untested with OpenSCAD
+    endif()
+  else () # GCC
+    set(GLEW_LIB_SEARCH_NAME "libglew32s.a")
+  endif ()
 
-IF (GLEW_INCLUDE_PATH)
-	SET( GLEW_FOUND 1 CACHE STRING "Set to 1 if GLEW is found, 0 otherwise")
-        MESSAGE(STATUS "GLEW include found in " ${GLEW_INCLUDE_PATH} )
-        MESSAGE(STATUS "GLEW library found in " ${GLEW_LIBRARY} )
-ELSE (GLEW_INCLUDE_PATH)
-	SET( GLEW_FOUND 0 CACHE STRING "Set to 1 if GLEW is found, 0 otherwise")
-ENDIF (GLEW_INCLUDE_PATH)
+  if (WIN32)
+    find_path(GLEW_INCLUDE_DIR GL/glew.h
+      $ENV{PROGRAMFILES}/GLEW/include
+      ${PROJECT_SOURCE_DIR}/src/nvgl/glew/include
+      DOC "The directory where GL/glew.h resides")
+    find_library(GLEW_LIBRARY
+      NAMES ${GLEW_LIB_SEARCH_NAME}
+      PATHS
+      $ENV{PROGRAMFILES}/GLEW/lib
+      ${PROJECT_SOURCE_DIR}/src/nvgl/glew/bin
+      ${PROJECT_SOURCE_DIR}/src/nvgl/glew/lib
+      DOC "The GLEW library")
+  else (WIN32)
+    find_path(GLEW_INCLUDE_DIR GL/glew.h
+      PATHS /usr/include /usr/local/include /usr/pkg/include
+      NO_DEFAULT_PATH
+      DOC "The directory where GL/glew.h resides")
+    find_library(GLEW_LIBRARY
+      NAMES GLEW glew
+      PATHS /usr/lib /usr/local/lib /usr/pkg/lib
+      NO_DEFAULT_PATH
+      DOC "The GLEW library")
+  endif (WIN32)
+
+  if (GLEW_INCLUDE_DIR)
+    set(GLEW_FOUND 1 CACHE STRING "Set to 1 if GLEW is found, 0 otherwise")
+    message(STATUS "GLEW include found in " ${GLEW_INCLUDE_DIR} )
+    message(STATUS "GLEW library found in " ${GLEW_LIBRARY} )
+  else()
+    set(GLEW_FOUND 0 CACHE STRING "Set to 1 if GLEW is found, 0 otherwise")
+  endif()
+endif()
\ No newline at end of file