[vcpkg.json] Add cross-platform package management; [CMakeLists.txt] Use same compiler flags as example Makefile (sans C99); [example/CMakeLists.txt] WiP implementation; [cmake/modules/CMakeFindM.cmake] Find math library

CMakeLists.txt

@@ -20,7 +20,7 @@ set(msvc "$<COMPILE_LANG_AND_ID:C,CXX,MSVC>")
 target_compile_options(
         "${PROJECT_NAME}_compiler_flags"
         INTERFACE
-        "$<${gcc_like}:$<BUILD_INTERFACE:-Wno-shadow;-Wformat=2;-Wall;-Wno-gcc-compat;-Wno-c99-extensions>>"
+        "$<${gcc_like}:$<BUILD_INTERFACE:-Wall;-Wextra;-pedantic;-Wno-misleading-indentation;-Wno-shift-negative-value;-O2>>"
         "$<${msvc}:$<BUILD_INTERFACE:-W3;-WX;-Zi;-permissive->>"
 )
 
@@ -43,8 +43,12 @@ configure_file(
 #=============#
 
 option(BUILD_HEADER_ONLY "Header only variant" "ON")
+option(BUILD_EXAMPLES "Build examples" "ON")
 
 add_subdirectory("src")
+if (BUILD_EXAMPLES)
+    add_subdirectory("example")
+endif (BUILD_EXAMPLES)
 
 include(CTest)
 if (BUILD_TESTING)

cmake/modules/CMakeFindM.cmake

@@ -0,0 +1,53 @@
+#
+# - Find math
+# Find the native M includes and library
+#
+#  M_INCLUDE_DIRS - where to find math.h, etc.
+#  M_LIBRARIES    - List of libraries when using math.
+#  M_FOUND        - True if math found.
+
+
+IF (M_INCLUDE_DIRS)
+  # Already in cache, be silent
+  SET(M_FIND_QUIETLY TRUE)
+ENDIF (M_INCLUDE_DIRS)
+
+#
+# On OS X, make sure we do *NOT* find math.h in the Kernel framework,
+# as that will convince CMake to cause the build to look there for
+# headers.
+#
+# For some unknown reason, on Yosemite, math.h is included in the Kernel
+# framework.  That framework exists to supply headers for building
+# *kernel* modules; it includes versions of C headers that are similar
+# to the standard userland headers, but not similar enough to be usable
+# when building userland code.
+#
+# Unless told not to look first in the framework paths, CMake will, on
+# Yosemite, or when using the Yosemite SDK, find math.h in the Kernel
+# framework, and add the header directory for the Kernel framework to
+# the list of places to look for headers, causing it to pick up other
+# headers from there as well.  This causes the build to fail.
+#
+SET(SAVED_CMAKE_FIND_FRAMEWORK ${CMAKE_FIND_FRAMEWORK})
+SET(CMAKE_FIND_FRAMEWORK LAST)
+FIND_PATH(M_INCLUDE_DIR math.h)
+SET(CMAKE_FIND_FRAMEWORK ${SAVED_CMAKE_FIND_FRAMEWORK})
+
+SET(M_NAMES m)
+FIND_LIBRARY(M_LIBRARY NAMES ${M_NAMES} )
+
+# handle the QUIETLY and REQUIRED arguments and set M_FOUND to TRUE if 
+# all listed variables are TRUE
+INCLUDE(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(M DEFAULT_MSG M_LIBRARY M_INCLUDE_DIR)
+
+IF(M_FOUND)
+  SET( M_LIBRARIES ${M_LIBRARY} )
+  SET( M_INCLUDE_DIRS ${M_INCLUDE_DIR} )
+ELSE(M_FOUND)
+  SET( M_LIBRARIES )
+  SET( M_INCLUDE_DIRS )
+ENDIF(M_FOUND)
+
+MARK_AS_ADVANCED( M_LIBRARIES M_INCLUDE_DIRS )

example/CMakeLists.txt

@@ -0,0 +1,30 @@
+set(_libs "file_browser" "extended" "canvas" "skinning")
+
+find_package(glfw3 CONFIG REQUIRED)
+find_package(GLEW REQUIRED)
+
+include(FindOpenGL)
+find_package(OpenGL REQUIRED)
+
+include("${CMAKE_SOURCE_DIR}/cmake/modules/CMakeFindM.cmake")
+
+set(deps "glfw3" "GLEW::GLEW" "OpenGL::GL" "${M_LIBRARIES}")
+if (APPLE)
+    #SET(GUI_TYPE MACOSX_BUNDLE)
+    #INCLUDE_DIRECTORIES ( /Developer/Headers/FlatCarbon )
+    find_library(COCOA_LIBRARY Cocoa)
+    find_library(COREVIDEO_LIBRARY CoreVideo)
+    find_library(IOKIT_LIBRARY IOKit)
+    mark_as_advanced(COCOA_LIBRARY COREVIDEO_LIBRARY IOKIT_LIBRARY)
+    list(APPEND deps "${COCOA_LIBRARY}" "${COREVIDEO_LIBRARY}" "${IOKIT_LIBRARY}")
+    # -L/usr/local/lib
+    # -I/usr/local/include
+endif (APPLE)
+
+foreach (_lib ${_libs})
+    set(src "${_lib}.c")
+    source_group("${_lib} Files" FILES "${src}")
+    add_executable("${_lib}" "${src}")
+    target_link_libraries("${_lib}" PRIVATE "${deps}")
+    target_include_directories("${_lib}" PRIVATE "${M_INCLUDE_DIRS}")
+endforeach (_lib ${_libs})

vcpkg.json

@@ -0,0 +1,11 @@
+{
+  "name": "nuklear",
+  "version-string": "0.0.1",
+  "port-version": 1,
+  "homepage": "https://github.com/Immediate-Mode-UI/Nuklear",
+  "description": "Minimal state immediate mode graphical user interface toolkit written in ANSI C and licensed under public domain.",
+  "dependencies": [
+    "glfw3",
+    "glew"
+  ]
+}