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make FindGLM.cmake more compliant with cmake module recommendations

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This commit is contained in:
Carsten Neumann 2012-09-24 15:20:02 -05:00
parent c588e9fa1e
commit ed2f46f2fa
1 changed files with 60 additions and 9 deletions
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69
util/FindGLM.cmake
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@ -1,12 +1,63 @@
if(NOT GLM_PACKAGE_DIR)
message("ERROR: GLM_PACKAGE_DIR requires to be set")
endif(NOT GLM_PACKAGE_DIR)
# FindGLM - attempts to locate the glm matrix/vector library.
#
# This module defines the following variables (on success):
# GLM_INCLUDE_DIRS - where to find glm/glm.hpp
# GLM_FOUND - if the library was successfully located
#
# It is trying a few standard installation locations, but can be customized
# with the following variables:
# GLM_ROOT_DIR - root directory of a glm installation
# Headers are expected to be found in either:
# <GLM_ROOT_DIR>/glm/glm.hpp OR
# <GLM_ROOT_DIR>/include/glm/glm.hpp
# This variable can either be a cmake or environment
# variable. Note however that changing the value
# of the environment varible will NOT result in
# re-running the header search and therefore NOT
# adjust the variables set by this module.
set(GLM_INCLUDE_DIR ${GLM_PACKAGE_DIR})
set(GLM_LIBRARY_DIR )
#=============================================================================
# Copyright 2012 Carsten Neumann
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
include_directories(${GLM_INCLUDE_DIR})
# default search dirs
SET(_glm_HEADER_SEARCH_DIRS
"/usr/include"
"/usr/local/include")
if(GLM_PACKAGE_DIR AND GLM_INCLUDE_DIR)
set(GLM_FOUND "YES")
endif(GLM_PACKAGE_DIR AND GLM_INCLUDE_DIR)
# check environment variable
SET(_glm_ENV_ROOT_DIR "$ENV{GLM_ROOT_DIR}")
IF(NOT GLM_ROOT_DIR AND _glm_ENV_ROOT_DIR)
SET(GLM_ROOT_DIR "${_glm_ENV_ROOT_DIR}")
ENDIF(NOT GLM_ROOT_DIR AND _glm_ENV_ROOT_DIR)
# put user specified location at beginning of search
IF(GLM_ROOT_DIR)
SET(_glm_HEADER_SEARCH_DIRS "${GLM_ROOT_DIR}"
"${GLM_ROOT_DIR}/include"
${_glm_HEADER_SEARCH_DIRS})
ENDIF(GLM_ROOT_DIR)
# locate header
FIND_PATH(GLM_INCLUDE_DIR "glm/glm.hpp"
PATHS ${_glm_HEADER_SEARCH_DIRS})
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(GLM DEFAULT_MSG
GLM_INCLUDE_DIR)
IF(GLM_FOUND)
SET(GLM_INCLUDE_DIRS "${GLM_INCLUDE_DIR}")
MESSAGE(STATUS "GLM_INCLUDE_DIR = ${GLM_INCLUDE_DIR}")
ENDIF(GLM_FOUND)