Bring 3rdParty libraries into OMSimulator's CMake build system.

CMakeLists.txt

@@ -1,16 +1,20 @@
 message("cmake version is: ${CMAKE_VERSION}")
 
-IF(WIN32 AND MSVC)
-  # VS 2017 requires Boost 1.64 or newer
-  # Boost 1.64 requires CMake 3.8 or newer
-  cmake_minimum_required(VERSION 3.8)
-ELSE()
-  cmake_minimum_required(VERSION 2.8)
-ENDIF()
+cmake_minimum_required(VERSION 3.14)
 
 project(OMSimulator)
-
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/config.cmake/")
+
+## If OMSimulator is being built standalone (not as part of OpenModelica)
+## include the required settings here.
+if(${CMAKE_PROJECT_NAME} STREQUAL ${PROJECT_NAME})
+  set(OMSIMULATOR_STANDALONE ON)
+  include(OMSimulatorTopLevelSettings)
+else()
+  set(OMSIMULATOR_STANDALONE OFF)
+endif()
+
+
 include(GetGitRevisionDescription)
 if (EXISTS "${CMAKE_SOURCE_DIR}/version.txt")
   file(STRINGS "version.txt" OMS_VERSION_STRING)
@@ -36,17 +40,8 @@ ELSE()
   set(PLATFORM_STRING "linux")
 ENDIF()
 
-# Don't allow in-source build
-IF("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
-  message(FATAL_ERROR "No in-source builds supported. Change to 'build' sub-directory and do 'cmake ..'.")
-ENDIF()
-
 message(STATUS "Platform string: ${PLATFORM_STRING}")
 
-IF(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
-  set(CMAKE_INSTALL_PREFIX ${PROJECT_SOURCE_DIR}/install/${PLATFORM_STRING} CACHE PATH "Library installation path (don't change)" FORCE)
-ENDIF()
-
 if("${STD_REGEX}" STREQUAL "0")
     message(WARNING, "Using boost::regex instead of std::regex due to old gcc/clang compiler")
     set(LIB_BOOST_REGEX regex)
@@ -66,9 +61,6 @@ ELSE()
     message(STATUS "ABI is: ${ABI}")
 ENDIF("${ABI}" MATCHES "^LINUX")
 
-# Enable verbose output from Makefile builds
-set(CMAKE_VERBOSE_MAKEFILE ON)
-
 # Use C++ 11 for the whole project
 # cmake < 3.1 doesn't know or respect CMAKE_CXX_STANDARD*
 set(CPP_FS_LIBS "")
@@ -127,40 +119,8 @@ ELSE()
 ENDIF()
 
 ##########################
-# Configuring for ZIP
-set(ZLIB_ROOT ${PROJECT_SOURCE_DIR}/3rdParty/zlib/install/${PLATFORM_STRING})
-find_package(ZLIB REQUIRED)
-
-# Configuring for minizip
-set(MINIZIP_ROOT ${PROJECT_SOURCE_DIR}/3rdParty/minizip/install/${PLATFORM_STRING})
-# set(MINIZIP_INCLUDEDIR ${PROJECT_SOURCE_DIR}/3rdParty/minizip/install/${PLATFORM_STRING}/include)
-# set(MINIZIP_LIBRARYDIR ${PROJECT_SOURCE_DIR}/3rdParty/minizip/install/${PLATFORM_STRING}/lib)
-find_package(MINIZIP REQUIRED)
-
-##########################
-# Configuring for FMI4c
-set(FMI4c_ROOT ${PROJECT_SOURCE_DIR}/3rdParty/fmi4c/install/${PLATFORM_STRING})
-find_package(FMI4c REQUIRED)
-
-##########################
-# Configuring for Lua
-set(LUALibrary_ROOT ${PROJECT_SOURCE_DIR}/3rdParty/Lua/install/${PLATFORM_STRING})
-find_package(LUALibrary REQUIRED)
-
-##########################
-# Configuring for CVODE
-set(CVODELibrary_ROOT ${PROJECT_SOURCE_DIR}/3rdParty/cvode/install/${PLATFORM_STRING})
-find_package(CVODELibrary REQUIRED)
-
-##########################
-# Configuring for KINSOL
-set(KINSOLLibrary_ROOT ${PROJECT_SOURCE_DIR}/3rdParty/kinsol/install/${PLATFORM_STRING})
-find_package(KINSOLLibrary REQUIRED)
 
-##########################
-# Configuring for PUGIXML
-add_definitions(-DPUGIXML_HEADER_ONLY)
-set(PUGIXML_INCLUDEDIR ${PROJECT_SOURCE_DIR}/3rdParty/PugiXml)
+add_subdirectory(3rdParty)
 
 ##########################
 # Configuring for CTPL
@@ -178,39 +138,10 @@ ELSE()
   MESSAGE(WARNING, "Python library not found.")
 ENDIF()
 
-##########################
-# Configuration for OMTLMSimulatorLib
-option(OMTLM "Enable the OMTLMSimulator module." ON)
-IF(OMTLM)
-set(OMTLMSIMULATOR_INCLUDEDIR ${PROJECT_SOURCE_DIR}/OMTLMSimulator/common)
-set(OMTLMSIMULATORLIB_INCLUDEDIR ${PROJECT_SOURCE_DIR}/OMTLMSimulator/common/OMTLMSimulatorLib)
-IF(WIN32)
-  set(OMTLMSIMULATORLIB_LIBRARYDIR ${PROJECT_SOURCE_DIR}/OMTLMSimulator/bin)
-ELSE() # use it from the install folder where is properly installed for MacOS
-  set(OMTLMSIMULATORLIB_LIBRARYDIR ${CMAKE_INSTALL_PREFIX}/lib/${HOST_SHORT})
-ENDIF()
-set(OMTLMSIMULATOR_3RDPARTY_INCLUDEDIR ${PROJECT_SOURCE_DIR}/OMTLMSimulator/3rdParty/misc/include)
-IF(WIN32)
-  IF (MINGW)
-    # adrpo: link with the full path to the dll on MINGW
-    set(OMTLM_LINKFLAGS ${OMTLMSIMULATORLIB_LIBRARYDIR}/libomtlmsimulator.dll wsock32 ws2_32)
-    message(STATUS "OMTLMSimulator enabled: ${OMTLM_LINKFLAGS}")
-  ELSE(MINGW)
-    set(OMTLM_LINKFLAGS omtlmsimulator wsock32 ws2_32)
-  ENDIF(MINGW)
-ELSE(WIN32)
-  set(OMTLM_LINKFLAGS omtlmsimulator)
-ENDIF(WIN32)
-  message(STATUS "OMTLMSimulator enabled.")
-ELSE(OMTLM)
-  set(OMTLM_LINKFLAGS)
-  message(STATUS "OMTLMSimulator disabled.")
-ENDIF(OMTLM)
-
 ##########################
 # Add project modules
-add_subdirectory(src/OMSimulator)
 add_subdirectory(src/OMSimulatorLib)
+add_subdirectory(src/OMSimulator)
 add_subdirectory(src/OMSimulatorLua)
 add_subdirectory(src/OMSimulatorPython)
 add_subdirectory(src/OMSimulatorServer)

Makefile

@@ -10,7 +10,7 @@ ROOT_DIR=$(shell pwd)
 # Option to build LIBXML2 as part of the 3rdParty projects
 LIBXML2 ?= $(OMTLM)
 # Option to enable OMTLM
-OMTLM ?= ON
+OMTLM ?= OFF
 # Option to enable AddressSanitizer
 ASAN ?= OFF
 # Statically link dependencies as much as possible
@@ -78,7 +78,7 @@ endif
 # Should we install everything into the OMBUILDDIR?
 ifeq ($(OMBUILDDIR),)
 	TOP_INSTALL_DIR=$(INSTALL_DIR)
-	CMAKE_INSTALL_PREFIX=
+	CMAKE_INSTALL_PREFIX=-DCMAKE_INSTALL_PREFIX=$(TOP_INSTALL_DIR)
 	HOST_SHORT=
 else
 	TOP_INSTALL_DIR=$(OMBUILDDIR)
@@ -116,7 +116,7 @@ else
 	CMAKE_BOOST_ROOT="-DBOOST_ROOT=$(BOOST_ROOT)"
 endif
 
-.PHONY: OMSimulator OMSimulatorCore config-OMSimulator config-fmi4c config-lua config-minizip config-zlib config-cvode config-kinsol config-xerces config-3rdParty distclean testsuite doc doc-html doc-doxygen OMTLMSimulator OMTLMSimulatorClean RegEx pip
+.PHONY: OMSimulator OMSimulatorCore config-OMSimulator config-xerces config-3rdParty distclean testsuite doc doc-html doc-doxygen OMTLMSimulator OMTLMSimulatorClean RegEx pip
 
 OMSimulator:
 	@echo OS: $(detected_OS)
@@ -188,7 +188,7 @@ RegEx: 3rdParty/RegEx/OMSRegEx$(EEXT)
 	@echo "Please checkout the 3rdParty submodule, e.g. using \"git submodule update --init 3rdParty\", and try again."
 	@false
 
-config-3rdParty: 3rdParty/README.md config-zlib config-minizip config-fmi4c config-lua config-cvode config-kinsol config-libxml2
+config-3rdParty: 3rdParty/README.md
 
 config-OMSimulator: $(BUILD_DIR)/Makefile
 $(BUILD_DIR)/Makefile: RegEx CMakeLists.txt
@@ -197,77 +197,7 @@ $(BUILD_DIR)/Makefile: RegEx CMakeLists.txt
 	@echo
 	$(eval STD_REGEX := $(shell 3rdParty/RegEx/OMSRegEx$(EEXT)))
 	$(MKDIR) $(BUILD_DIR)
-	cd $(BUILD_DIR) && $(CMAKE) $(CMAKE_TARGET) ../.. -DABI=$(ABI) -DSTD_REGEX=$(STD_REGEX) -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON -DOMTLM:BOOL=$(OMTLM) -DASAN:BOOL=$(ASAN) -DCMAKE_BUILD_TYPE=$(BUILD_TYPE) $(CMAKE_BOOST_ROOT) $(CMAKE_INSTALL_PREFIX) $(HOST_SHORT) $(EXTRA_CMAKE) $(CMAKE_STATIC)
-
-# use zlib and minizip from OMSimulator 3rdParty by setting OMS_ZLIB_INCLUDE_DIR, OMS_ZLIB_LIBRARY OMS_MINIZIP_INCLUDE_DIR and DOMS_MINIZIP_LIBRARY, see 3rdparty/fmi4c/cmake
-config-fmi4c: config-minizip config-zlib 3rdParty/fmi4c/$(INSTALL_DIR)/lib/libfmi4c.a
-3rdParty/fmi4c/$(INSTALL_DIR)/lib/libfmi4c.a: 3rdParty/fmi4c/$(BUILD_DIR)/Makefile
-	$(MAKE) -C 3rdParty/fmi4c/$(BUILD_DIR)/ install VERBOSE=1
-3rdParty/fmi4c/$(BUILD_DIR)/Makefile: 3rdParty/fmi4c/CMakeLists.txt
-	@echo
-	@echo "# config fmi4c"
-	@echo
-	$(MKDIR) 3rdParty/fmi4c/$(BUILD_DIR)
-	$(MKDIR) 3rdParty/fmi4c/$(INSTALL_DIR)
-	cd 3rdParty/fmi4c/$(BUILD_DIR) && $(CMAKE) $(CMAKE_TARGET) ../.. \
-	-DCMAKE_INSTALL_PREFIX=../../$(INSTALL_DIR) \
-	-DFMI4C_BUILD_SHARED=OFF \
-	-DFMI4C_USE_INCLUDED_ZLIB=OFF \
-	-DOMS_ZLIB_INCLUDE_DIR=../zlib/$(INSTALL_DIR)/include \
-	-DOMS_ZLIB_LIBRARY=../zlib/$(INSTALL_DIR)/lib/libzlibstatic.a \
-	-DOMS_MINIZIP_INCLUDE_DIR=../minizip/$(INSTALL_DIR)/include \
-	-DOMS_MINIZIP_LIBRARY=../minizip/$(INSTALL_DIR)/lib/libminizip.a
-
-config-zlib: 3rdParty/zlib/$(INSTALL_DIR)/lib/libzlibstatic.a
-3rdParty/zlib/$(INSTALL_DIR)/lib/libzlibstatic.a: 3rdParty/zlib/$(BUILD_DIR)/Makefile
-	$(MAKE) -C 3rdParty/zlib/$(BUILD_DIR)/ install VERBOSE=1
-3rdParty/zlib/$(BUILD_DIR)/Makefile: 3rdParty/zlib/CMakeLists.txt
-	@echo
-	@echo "# config zlib"
-	@echo
-	$(MKDIR) 3rdParty/zlib/$(BUILD_DIR)
-	$(MKDIR) 3rdParty/zlib/$(INSTALL_DIR)
-	cd 3rdParty/zlib/$(BUILD_DIR) && $(CMAKE) $(CMAKE_TARGET) ../.. -DCMAKE_INSTALL_PREFIX=../../$(INSTALL_DIR) -DBUILD_SHARED_LIBS=OFF
-
-config-lua: 3rdParty/Lua/$(INSTALL_DIR)/liblua.a
-3rdParty/Lua/$(INSTALL_DIR)/liblua.a: 3rdParty/Lua/$(BUILD_DIR)/Makefile
-	$(MAKE) -C 3rdParty/Lua/$(BUILD_DIR)/ install VERBOSE=1
-3rdParty/Lua/$(BUILD_DIR)/Makefile:
-	@echo
-	@echo "# config Lua"
-	@echo
-	$(MKDIR) 3rdParty/Lua/$(BUILD_DIR)/
-	cd 3rdParty/Lua/$(BUILD_DIR)/ && $(CMAKE) $(CMAKE_TARGET) ../.. -DCMAKE_INSTALL_PREFIX=../../$(INSTALL_DIR) -DLUA_ENABLE_SHARED=OFF -DLUA_ENABLE_TESTING=OFF
-
-config-minizip: config-zlib 3rdParty/minizip/$(INSTALL_DIR)/libminizip.a
-3rdParty/minizip/$(INSTALL_DIR)/libminizip.a: 3rdParty/minizip/$(BUILD_DIR)/Makefile
-	$(MAKE) -C 3rdParty/minizip/$(BUILD_DIR)/ install VERBOSE=1
-3rdParty/minizip/$(BUILD_DIR)/Makefile:
-	@echo
-	@echo "# config minizip"
-	@echo
-	$(MKDIR) 3rdParty/minizip/$(BUILD_DIR)/
-	cd 3rdParty/minizip/$(BUILD_DIR)/ && $(CMAKE) $(CMAKE_TARGET) ../../src -DCMAKE_INSTALL_PREFIX=../../$(INSTALL_DIR)
-
-config-cvode: 3rdParty/cvode/$(INSTALL_DIR)/lib/libsundials_cvode.a
-3rdParty/cvode/$(INSTALL_DIR)/lib/libsundials_cvode.a: 3rdParty/cvode/$(BUILD_DIR)/Makefile
-	$(MAKE) -C 3rdParty/cvode/$(BUILD_DIR)/ install
-3rdParty/cvode/$(BUILD_DIR)/Makefile: 3rdParty/cvode/CMakeLists.txt
-	@echo
-	@echo "# config cvode"
-	@echo
-	$(MKDIR) 3rdParty/cvode/$(BUILD_DIR)
-	cd 3rdParty/cvode/$(BUILD_DIR) && $(CMAKE) $(CMAKE_TARGET) ../.. -DCMAKE_INSTALL_PREFIX=../../$(INSTALL_DIR) -DEXAMPLES_ENABLE:BOOL=0 -DBUILD_SHARED_LIBS:BOOL=0 $(CMAKE_FPIC)
-
-config-kinsol: 3rdParty/kinsol/$(INSTALL_DIR)/lib/libsundials_kinsol.a
-3rdParty/kinsol/$(INSTALL_DIR)/lib/libsundials_kinsol.a: 3rdParty/kinsol/$(BUILD_DIR)/Makefile
-	$(MAKE) -C 3rdParty/kinsol/$(BUILD_DIR)/ install
-3rdParty/kinsol/$(BUILD_DIR)/Makefile: 3rdParty/kinsol/CMakeLists.txt
-	@echo
-	@echo "# config kinsol"
-	@echo
-	$(MKDIR) 3rdParty/kinsol/$(BUILD_DIR)
-	cd 3rdParty/kinsol/$(BUILD_DIR) && $(CMAKE) $(CMAKE_TARGET) ../.. -DCMAKE_INSTALL_PREFIX=../../$(INSTALL_DIR) -DEXAMPLES_ENABLE:BOOL=0 -DBUILD_SHARED_LIBS:BOOL=0 $(CMAKE_FPIC)
+	$(CMAKE) -S . -B $(BUILD_DIR) $(CMAKE_TARGET) -DABI=$(ABI) -DSTD_REGEX=$(STD_REGEX) -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON -DASAN:BOOL=$(ASAN) -DCMAKE_BUILD_TYPE=$(BUILD_TYPE) $(CMAKE_BOOST_ROOT) $(CMAKE_INSTALL_PREFIX) $(HOST_SHORT) $(EXTRA_CMAKE) $(CMAKE_STATIC)
 
 config-xerces: 3rdParty/xerces/$(INSTALL_DIR)/lib/libxerces-c.a
 3rdParty/xerces/$(INSTALL_DIR)/lib/libxerces-c.a: 3rdParty/xerces/$(BUILD_DIR)/Makefile
@@ -279,41 +209,16 @@ config-xerces: 3rdParty/xerces/$(INSTALL_DIR)/lib/libxerces-c.a
 	$(MKDIR) 3rdParty/xerces/$(BUILD_DIR)
 	cd 3rdParty/xerces/$(BUILD_DIR) && $(CMAKE) $(CMAKE_TARGET) ../.. -DCMAKE_INSTALL_PREFIX=../../$(INSTALL_DIR) -DBUILD_SHARED_LIBS:BOOL=OFF
 
-ifeq ($(LIBXML2),OFF)
-config-libxml2:
-	@echo
-	@echo "# LIBXML2=OFF => Skipping build of 3rdParty library libxml2 (must be installed on system instead)."
-	@echo
-else
-config-libxml2: 3rdParty/libxml2/$(INSTALL_DIR)/lib/libxml2.a
-3rdParty/libxml2/$(INSTALL_DIR)/lib/libxml2.a: 3rdParty/libxml2/$(BUILD_DIR)/Makefile
-	$(MAKE) -C 3rdParty/libxml2/$(BUILD_DIR)/ install
-3rdParty/libxml2/$(BUILD_DIR)/Makefile: 3rdParty/libxml2/CMakeLists.txt
-	@echo
-	@echo "# config libxml2"
-	@echo
-	$(MKDIR) 3rdParty/libxml2/$(BUILD_DIR)
-	cd 3rdParty/libxml2/$(BUILD_DIR) && $(CMAKE) $(CMAKE_TARGET) ../.. -DCMAKE_INSTALL_PREFIX=../../$(INSTALL_DIR) -DBUILD_SHARED_LIBS=OFF -DLIBXML2_WITH_PYTHON=OFF -DLIBXML2_WITH_ZLIB=OFF -DLIBXML2_WITH_LZMA=OFF -DLIBXML2_WITH_TESTS=OFF
-endif
-
 distclean:
 	@echo
 	@echo "# make distclean"
 	@echo
 	@$(MAKE) OMTLMSimulatorClean
 	$(RM) $(BUILD_DIR)
 	$(RM) $(INSTALL_DIR)
-	$(RM) 3rdParty/Lua/$(BUILD_DIR)
-	$(RM) 3rdParty/Lua/$(INSTALL_DIR)
 	$(RM) 3rdParty/RegEx/OMSRegEx$(EEXT)
-	$(RM) 3rdParty/cvode/$(BUILD_DIR)
-	$(RM) 3rdParty/cvode/$(INSTALL_DIR)
-	$(RM) 3rdParty/kinsol/$(BUILD_DIR)
-	$(RM) 3rdParty/kinsol/$(INSTALL_DIR)
 	$(RM) 3rdParty/xerces/$(BUILD_DIR)
 	$(RM) 3rdParty/xerces/$(INSTALL_DIR)
-	$(RM) 3rdParty/libxml2/$(BUILD_DIR)
-	$(RM) 3rdParty/libxml2/$(INSTALL_DIR)
 
 testsuite:
 	@echo

buildWinVS.bat

@@ -45,17 +45,6 @@ IF NOT DEFINED CMAKE_BUILD_TYPE SET CMAKE_BUILD_TYPE="Release"
 
 MKDIR install\win\bin
 
-:: -- build OMTLMSimulator ----------------------------------------------------
-ECHO # Building OMTLMSimulator
-CD OMTLMSimulator
-START /B /WAIT CMD /C "buildWinVS.bat %OMS_VS_TARGET%"
-IF NOT ["%ERRORLEVEL%"]==["0"] GOTO fail
-CD..
-COPY /Y OMTLMSimulator\bin\omtlmsimulator.lib install\win\bin
-COPY /Y OMTLMSimulator\bin\omtlmsimulator.dll install\win\bin
-ECHO %CD%
-:: -- build OMTLMSimulator ----------------------------------------------------
-
 :: -- build OMSimulator -------------------------------------------------------
 ECHO # build OMSimulator
 msbuild.exe "build\win\INSTALL.vcxproj" /t:Build /p:configuration=%CMAKE_BUILD_TYPE% /maxcpucount

config.cmake/OMSimulatorTopLevelSettings.cmake

@@ -0,0 +1,57 @@
+# Build all libraries within OMSimulator with position independent
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
+# Find and use ccache if available.
+find_program(CCACHE_PROGRAM ccache)
+if(CCACHE_PROGRAM)
+  message(STATUS "Found ccache. It will be used for compilation C/C++ sources")
+  set(CMAKE_CXX_COMPILER_LAUNCHER ${CCACHE_PROGRAM})
+  set(CMAKE_C_COMPILER_LAUNCHER   ${CCACHE_PROGRAM})
+endif()
+
+### Installation configurations ###############################################################################
+# Install following GNU conventions (i.e., bin, lib, include, share ...)
+include(GNUInstallDirs)
+
+# Precaution so that users do not install in system folders (e.g. /user/, /usr/local/)
+# unintentionally. If the user has not specified anything default to an install_cmake dir in the root
+# build directory.
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+    set(CMAKE_INSTALL_PREFIX "${PROJECT_BINARY_DIR}/install_cmake" CACHE PATH "Default installation directory" FORCE)
+    # Prevent sub-projects from changing it by checking CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT after this
+    set(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT FALSE)
+    message(WARNING "No installation directory specified. Defaulting to: ${CMAKE_INSTALL_PREFIX}")
+endif()
+# omc_add_to_report(CMAKE_INSTALL_PREFIX)
+
+# Install libraries to lib/<arch> folder within the installation prefix directory.
+set(CMAKE_INSTALL_LIBDIR "${CMAKE_INSTALL_LIBDIR}/${CMAKE_LIBRARY_ARCHITECTURE}")
+
+# Install headers to "include/" folder within the installation prefix directory.
+# set(CMAKE_INSTALL_INCLUDEDIR "${CMAKE_INSTALL_INCLUDEDIR}/")
+
+# On macOS we want BUNDLEs (.app) to go to an 'Applications/' directory instead of a 'bin/' directory
+if(APPLE)
+  set(OM_MACOS_INSTALL_BUNDLEDIR "Applications/")
+endif()
+
+## Set the adjusted installation lib directory as an rpath for all installed binaries.
+## Assumes binaries end up in either 'bin' or 'lib' AND also assumes that 'bin' and 'lib' are sibling directories.
+if(APPLE)
+  ## MacOS Bundles end up in bin/<BundleName>.app/Contents/MacOS/
+  ## So make sure that the lib dir is referenced from that location as well
+  set(CMAKE_INSTALL_RPATH "@loader_path/../${CMAKE_INSTALL_LIBDIR};@loader_path/../../../../${CMAKE_INSTALL_LIBDIR}")
+else()
+  set(CMAKE_INSTALL_RPATH "$ORIGIN;$ORIGIN/../${CMAKE_INSTALL_LIBDIR}")
+endif()
+
+## Do not print unnecessary install messages when nothing has actually changed.
+set(CMAKE_INSTALL_MESSAGE LAZY)
+
+
+
+
+# Don't allow in-source build
+if("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
+  message(FATAL_ERROR "No in-source builds supported. Change to 'build' sub-directory and do 'cmake ..'.")
+endif()