cmake updated for nomacs

- adds a cmake config
- adds userpaths
- different release/debug targets for windows

Author: diemmarkus

.gitignore

@@ -18,3 +18,4 @@ test/tmp/*
 doc/html
 
 contrib/vms/.vagrant
+CmakeUserPaths.cmake

CMakeLists.txt

@@ -5,6 +5,14 @@ project(exiv2
     LANGUAGES CXX C
 )
 
+# load paths from the user file if exists
+if (EXISTS ${CMAKE_SOURCE_DIR}/CMakeUserPaths.cmake)
+	include(${CMAKE_SOURCE_DIR}/CMakeUserPaths.cmake)
+	message(STATUS "using user paths...")
+elseif(MSVC)
+	message(WARNING "Could not find CMakeUserPaths.cmake - please use this file to specify your install directories (see CMakeUserPathsGit.cmake)")
+endif()
+
 include(cmake/mainSetup.cmake  REQUIRED)
 
 # options and their default values
@@ -107,5 +115,14 @@ install(FILES ${CMAKE_BINARY_DIR}/exiv2.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/p
 
 include(cmake/printSummary.cmake)
 
+# diem: create config
+set(EXIV2_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/include ${CMAKE_BINARY_DIR})
+set(EXIV2_LIBS optimized ${CMAKE_BINARY_DIR}/lib/Release/exiv2.lib debug ${CMAKE_BINARY_DIR}/lib/Debug/exiv2.lib)
+set(EXIV2_BINARY_DIR ${CMAKE_BINARY_DIR}/src/)
+set(EXPAT_BINARY_DIR optimized ${CMAKE_BINARY_DIR}/bin)
+configure_file(${CMAKE_SOURCE_DIR}/exiv2.cmake.in ${CMAKE_BINARY_DIR}/exiv2Config.cmake)
+
+message(STATUS "version: ${PROJECT_VERSION}")
+
 # That's all Folks!
 ##

CMakeUserPathsGit.cmake

@@ -0,0 +1,25 @@
+# If you want to use prefix paths with cmake, copy and rename this file to CMakeUserPaths.cmake
+# Do not add this file to GIT!
+
+IF (CMAKE_CL_64)
+
+	# we use opencv's zlib
+	SET(ZLIB_BUILD_PATH "C:/coding/3rd-party/opencv/build2017-x64/3rdparty")
+	
+	# add the expat build
+	SET(EXPAT_BUILD_PATH "C:/coding/3rd-party/expat/build2017-x64/")
+ELSE()
+
+	# we use opencv's zlib
+	SET(ZLIB_BUILD_PATH "C:/coding/3rd-party/opencv/build2017-x86/3rdparty")
+	
+	# add the expat build
+	SET(EXPAT_BUILD_PATH "C:/coding/3rd-party/expat/build2017-x86/")
+ENDIF()
+
+SET(ZLIB_INCLUDE_DIR "C:/coding/3rd-party/opencv/3rdparty/zlib")
+SET(ZLIB_LIBRARY_DEBUG "${ZLIB_BUILD_PATH}/lib/Debug/zlibd.lib")
+SET(ZLIB_LIBRARY_RELEASE "${ZLIB_BUILD_PATH}/lib/Release/zlib.lib")
+
+SET(EXPAT_INCLUDE_DIR "C:/coding/3rd-party/expat/lib")
+SET(EXPAT_LIBRARY "${EXPAT_BUILD_PATH}/Release/expat.lib")

README-nomacs.md

@@ -0,0 +1,25 @@
+# Building exiv2 for nomacs
+
+## Build exiv2 (Windows)
+
+### Compile dependencies
+
+- [expat](https://github.com/nomacs/expat) (needed for exiv2)
+- [OpenCV](https://github.com/TUWien/opencv) (>= 3.4) _optional_
+
+### Compile Exiv2
+
+- copy `CMakeUserPathsGit.cmake` and rename it to `CMakeUserPaths.cmake`
+- add your library paths to the `${CMAKE_PREFIX_PATH}` in `CMakeUserPaths.cmake`
+- Open CMake GUI
+- set this folder to `where is the source code`
+- choose a build folder (e.g. `build2019-x64`)
+- Hit `Configure`then `Generate`
+- Open the Project
+- Compile the Solution (build Release and Debug)
+- You should now have an `exiv2.dll` in $YOUR_EXIV2_BUILD_PATH$/bin
+- In the `CMakeUserPaths.cmake` of your [nomacs](https://github.com/nomacs/nomacs) project, add this path:
+
+```cmake
+SET(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} "$EXIV2_PATH$/build2017-x64/")
+```

cmake/mainSetup.cmake

@@ -9,9 +9,16 @@ include(CMakeDependentOption)
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 
-set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
-set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
-set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
+# diem: create debug/release outputs for windows
+if (MSVC)
+	set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+	set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG ${CMAKE_BINARY_DIR}/$<CONFIGURATION>/bin)
+	set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE ${CMAKE_BINARY_DIR}/$<CONFIGURATION>/bin)
+else()
+	set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+	set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG ${CMAKE_BINARY_DIR}/bin)
+	set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE ${CMAKE_BINARY_DIR}/bin)
+endif()
 
 if (NOT CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
     set(CMAKE_CXX_VISIBILITY_PRESET hidden)

exiv2.cmake.in

@@ -0,0 +1,15 @@
+# ** File generated automatically, do not modify **
+
+SET(EXIV2_INCLUDE_DIRS @EXIV2_INCLUDE_DIRS@)
+SET(EXIV2_LIBS @EXIV2_LIBS@) 
+SET(EXIV2_BUILD_PATH @CMAKE_CURRENT_BINARY_DIR@) 
+SET(EXIV2_PROJECT_NAME @PROJECT_NAME@)
+SET(EXIV2_VERSION @PROJECT_VERSION@)
+
+SET(EXPAT_BUILD_PATH @EXPAT_BUILD_PATH@) 
+
+IF(EXIV2_INCLUDE_DIRS)
+	SET(EXIV_FOUND true)
+ELSE()
+	SET(EXIV_FOUND "EXIV_FOUND-NOTFOUND")
+ENDIF()