# Only execute commands if file was not included already
if (NOT INVRS_CONFIG_CMAKE_LOADED)

include (${INVRS_SOURCE_DIR}/user.cmake)
if(WIN32)
string(TOLOWER $ENV{COMPUTERNAME} COMPUTERNAME)
elseif(UNIX)
find_program(HOSTNAME_BIN NAMES hostname)
exec_program(${HOSTNAME_BIN} ARGS OUTPUT_VARIABLE HOSTNAME)
string(TOLOWER "${HOSTNAME}" COMPUTERNAME)
endif(WIN32)
include (${INVRS_SOURCE_DIR}/user.${COMPUTERNAME}.cmake OPTIONAL)

# search for cmake modules in this directory:
set (CMAKE_MODULE_PATH ${INVRS_SOURCE_DIR}/cmake ${CMAKE_MODULE_PATH})

# Set a default build type if no build type is set
# (CACHE variables are only set if they don't already have a value)
set (CMAKE_BUILD_TYPE "Release" CACHE STRING "Build type (Release/Debug)")
# when first generating the cache, cache-variables are not instantly available (only at subsequent runs):
if (NOT CMAKE_BUILD_TYPE)
set (CMAKE_BUILD_TYPE Release)
endif (NOT CMAKE_BUILD_TYPE)
if ( NOT ${CMAKE_VERSION} VERSION_LESS "2.8" )
# cmake >= 2.8 provides combo-boxes:
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS Release Debug)
endif ( NOT ${CMAKE_VERSION} VERSION_LESS "2.8" )


# Set the default install prefix to the inVRs directory if not already set in
# user.cmake
if (NOT INVRS_INSTALL_PREFIX)
set (INVRS_INSTALL_PREFIX ${INVRS_SOURCE_DIR})
endif (NOT INVRS_INSTALL_PREFIX)

###############################################################################
# Find IrrXML include path
###############################################################################
set (IRRXML_INCLUDE_DIR ${INVRS_SOURCE_DIR}/external/irrxml-1.2/src)
#will be installed into target dir which is already appended
#list (APPEND INVRS_EXPORT_INCLUDE_DIRS ${INVRS_TARGET_INCLUDE_DIR}/irrxml )
include_directories(${IRRXML_INCLUDE_DIR})

###############################################################################
# Find GMTL include path
###############################################################################
set (GMTL_INCLUDE_DIR ${INVRS_SOURCE_DIR}/external/gmtl-0.6.1)
#will be installed into target dir which is already appended
#can be skipped because the normal direcotry is already there
#list (APPEND INVRS_EXPORT_INCLUDE_DIRS ${INVRS_TARGET_INCLUDE_DIR}) 
include_directories(${GMTL_INCLUDE_DIR})


# Set Compiler flags
if (NOT WIN32)
set (CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} "-fPIC ${USERDEFINED_CXX_FLAGS}")
set (CMAKE_CXX_FLAGS_PROFILE ${CMAKE_CXX_FLAGS_PROFILE} "-O3 -g -DNDEBUG -fPIC ${USERDEFINED_CXX_FLAGS}")
set (CMAKE_CXX_FLAGS_RELWITHDEBINFO ${CMAKE_CXX_FLAGS_RELWITHDEBINFO} "-O3 -g -DNDEBUG -fPIC ${USERDEFINED_CXX_FLAGS}")
list (APPEND INVRS_EXPORT_DEFINITIONS "-fPIC")
else (NOT WIN32)
if (UNIX)
	#mingw, cygwin etc.
	message (FATAL_ERROR "Found unsupported operating system: Only Windows and Linux systems are supported!")
else (UNIX)
	add_definitions(-D_WINSOCKAPI_)
endif (UNIX)
endif (NOT WIN32)

# set formatting for eclipse output
if (CMAKE_COMPILER_IS_GNUCC)
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fmessage-length=0")
endif (CMAKE_COMPILER_IS_GNUCC)
if (CMAKE_COMPILER_IS_GNUCXX)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fmessage-length=0")
endif (CMAKE_COMPILER_IS_GNUCXX)

###############################################################################
# inVRs include path
###############################################################################
include_directories(${INVRS_SOURCE_DIR}/src)
include_directories(${INVRS_SOURCE_DIR}/tools/libraries)



# allow header-files to differ between build-time and installed-time
# i.e. some header files use #ifdefs, which are then "baked" into a
# separate header-file, which is only included when inVRs is installed:
# #ifdef INVRS_BUILD_TIME
# # include "config.h"
# #endif
add_definitions( -DINVRS_BUILD_TIME )

set (INVRS_CONFIG_CMAKE_LOADED ON)

endif (NOT INVRS_CONFIG_CMAKE_LOADED)