Support BSD/UNIX compilation targets

.gitignore

@@ -5,4 +5,11 @@
 *.tim
 *.bmp
 obj
-gh-pages
+gh-pages
+.idea
+cmake-build-debug
+CMakeFiles
+cmake_install.cmake
+CMakeCache.txt
+Makefile
+Img2TIM

CMakeLists.txt

@@ -0,0 +1,24 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(Img2TIM VERSION 1.0)
+
+# Debug
+#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -g -O1")
+
+# C++ standard
+set(CMAKE_CXX_STANDARD 20)
+set(CXXFLAGS "${CMAKE_CXX_FLAGS} -Wall -std=c++20")
+set(CMAKE_CXX_STANDARD_REQUIRED True)
+set(CMAKE_VERBOSE_MAKEFILE ON)
+
+# PkgConfig
+find_package(PkgConfig REQUIRED)
+
+# Mark executable
+add_executable(Img2TIM "main.cpp" "tim.cpp")
+target_include_directories(Img2TIM PRIVATE "tim.h")
+
+# FreeImage
+# find_package(FreeImage CONFIG REQUIRED)
+pkg_check_modules(FreeImage REQUIRED IMPORTED_TARGET GLOBAL freeimage)
+target_link_libraries(Img2TIM PRIVATE PkgConfig::FreeImage)

README.md

@@ -16,10 +16,31 @@ The latest precompiled Win32 binary of this program can be downloaded here:
 Previous versions:
 [img2tim_(v0.60).zip](http://lameguy64.github.io/img2tim/img2tim_(v0.60).zip)
 
+## Compiling
+
+This project relies on `PkgConfig` to resolve the necessary dependencies. Esnure that
+it is present on your system and the `freeimage` library is installed.
+
+To initialise the project, run:
+```shell
+cmake -B ./build .
+```
+
+If need be you can directly specify the toolchain if you are using vcpkg:
+
+```shell
+cmake -DCMAKE_TOOLCHAIN_FILE=<path to vcpkg>/vcpkg/scripts/buildsystems/vcpkg.cmake -B ./build .
+```
+
+Then run the program via:
+```shell
+./build/Img2TIM <args>
+```
+
 ## Changelog
 **Version 0.75**
 * Fixed a bug where a false error message is thrown when converting 4-bit images with -bpp 4.
 * Fixed a pixel order bug when converting images from either RGB or 4-bit depth to 4-bit color depth.
 
 **Version 0.60**
-* Initial release.
+* Initial release.

freeimage.pc

@@ -0,0 +1,10 @@
+prefix=/opt/homebrew/Cellar/freeimage/3.18.0
+exec_prefix=${prefix}
+includedir=${prefix}/include
+libdir=${exec_prefix}/lib
+
+Name: FreeImage
+Description: FreeImage Library
+Version: 3.18.0
+Cflags: -I${includedir}
+Libs: -L${libdir} -lfreeimage

tim.h

@@ -6,6 +6,9 @@
 #include <windows.h>
 #endif
 #include <math.h>
+#if defined(__APPLE__) || defined(linux)
+#include <sys/types.h>
+#endif
 
 #define TIM_OUTPUT_CLUT4	0
 #define TIM_OUTPUT_CLUT8	1