From 2756fff72169df6cd4eec3d9bf96e9673574c2d0 Mon Sep 17 00:00:00 2001
From: Andreas Sturmlechner <andreas.sturmlechner@gmail.com>
Date: Sun, 6 Nov 2016 01:00:13 +0100
Subject: [PATCH 2/2] Make options optional

REVIEW: 129344
---
 CMakeLists.txt | 30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4db135f..8055bee 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -48,6 +48,11 @@ add_definitions(-fvisibility=default)
 cmake_policy(SET CMP0002 OLD)
 #cmake_policy(SET CMP0063 NEW)
 
+### Options ######################################
+option(ENABLE_CANTOR "Build with Cantor support" ON)
+option(ENABLE_FFTW "Build with FFTW support" ON)
+option(ENABLE_NETCDF "Build with NetCDF support" ON)
+
 ### FFTW ######################################
 FIND_LIBRARY(FFTW_LIBRARIES fftw3
 	PATHS
@@ -58,12 +63,12 @@ FIND_PATH (FFTW_INCLUDE_DIR fftw3.h
 	/usr/include
 	/usr/local/include
 )
-IF (FFTW_LIBRARIES AND FFTW_INCLUDE_DIR)
+IF(ENABLE_FFTW AND FFTW_LIBRARIES AND FFTW_INCLUDE_DIR)
 	SET (FFTW_FOUND TRUE)
-ELSE (FFTW_LIBRARIES AND FFTW_INCLUDE_DIR)
+ELSE()
 	SET (FFTW_FOUND FALSE)
 	SET (FFTW_LIBRARIES "")
-ENDIF (FFTW_LIBRARIES AND FFTW_INCLUDE_DIR)
+ENDIF()
 
 IF (FFTW_FOUND)
 	MESSAGE (STATUS "Found FFTW 3 Library: ${FFTW_INCLUDE_DIR} ${FFTW_LIBRARIES}")
@@ -120,12 +125,12 @@ FIND_PATH (CANTOR_INCLUDE_DIR worksheetaccess.h
 	/usr/include/cantor
 	/usr/local/include/cantor
 )
-IF (CANTOR_LIBS AND CANTOR_INCLUDE_DIR)
+IF(ENABLE_CANTOR AND CANTOR_LIBS AND CANTOR_INCLUDE_DIR)
 	SET (CANTOR_LIBS_FOUND TRUE)
-ELSE (CANTOR_LIBS AND CANTOR_INCLUDE_DIR)
+ELSE()
 	SET (CANTOR_LIBS_FOUND FALSE)
 	SET (CANTOR_LIBS "")
-ENDIF (CANTOR_LIBS AND CANTOR_INCLUDE_DIR)
+ENDIF()
 IF (CANTOR_LIBS_FOUND)
 	MESSAGE (STATUS "Found CantorLibs ${CANTOR_INCLUDE_DIR} ${CANTOR_LIBS}")
 	add_definitions (-DHAVE_CANTOR_LIBS)
@@ -150,12 +155,12 @@ FIND_PATH (NETCDF_INCLUDE_DIR netcdf.h
 	/usr/include/
 	/usr/local/include/
 )
-IF (NETCDF_LIBRARY AND NETCDF_INCLUDE_DIR)
+IF(ENABLE_NETCDF AND NETCDF_LIBRARY AND NETCDF_INCLUDE_DIR)
 	SET (NETCDF_FOUND TRUE)
-ELSE (NETCDF_LIBRARY AND NETCDF_INCLUDE_DIR)
+ELSE()
 	SET (NETCDF_FOUND FALSE)
 	SET (NETCDF_LIBRARY "")
-ENDIF (NETCDF_LIBRARY AND NETCDF_INCLUDE_DIR)
+ENDIF()
 IF (NETCDF_FOUND)
 	MESSAGE (STATUS "Found Network Common Data Format (NetCDF) Library: ${NETCDF_INCLUDE_DIR} ${NETCDF_LIBRARY}")
 	add_definitions (-DHAVE_NETCDF)
-- 
2.7.3