build script: add portmidi target

build.py

@@ -1131,6 +1131,32 @@ class PngTarget(ConfigureMakeStaticDependencyTarget):
         Target.update_prefix_shell_script(builder.prefix_path + '/bin/libpng16-config')
 
 
+class PortMidiTarget(CMakeTarget):
+    def __init__(self, name='portmidi'):
+        super().__init__(name)
+
+    def prepare_source(self, builder: 'Builder'):
+        builder.download_source(
+            'https://downloads.sourceforge.net/project/portmedia/portmidi/217/portmidi-src-217.zip',
+            '08e9a892bd80bdb1115213fb72dc29a7bf2ff108b378180586aa65f3cfd42e0f')
+
+    def detect(self, builder: 'Builder') -> bool:
+        return os.path.exists(builder.source_path + 'pm_common/portmidi.h')
+
+    def post_build(self, builder: 'Builder'):
+        if os.path.exists(self.prefix):
+            shutil.rmtree(self.prefix)
+
+        include_path = self.prefix + os.sep + 'include'
+        os.makedirs(include_path)
+        shutil.copy(builder.source_path + 'pm_common/portmidi.h', include_path)
+        shutil.copy(builder.source_path + 'porttime/porttime.h', include_path)
+
+        lib_path = self.prefix + os.sep + 'lib' + os.sep
+        os.makedirs(lib_path)
+        shutil.copy(builder.build_path + 'libportmidi_s.a', lib_path + 'libportmidi.a')
+
+
 class SamplerateTarget(ConfigureMakeStaticDependencyTarget):
     def __init__(self, name='samplerate'):
         super().__init__(name)
@@ -1662,6 +1688,7 @@ class Builder(object):
             PcreTarget(),
             PkgConfigTarget(),
             PngTarget(),
+            PortMidiTarget(),
             SamplerateTarget(),
             Sdl2Target(),
             Sdl2ImageTarget(),

patch/portmidi.patch

@@ -0,0 +1,59 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -36,8 +36,6 @@
+ set(CMAKE_MODULE_LINKER_FLAGS_RELWITHDEBINFO "" CACHE INTERNAL "Unused")
+ set(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "" CACHE INTERNAL "Unused")
+ 
+-set(CMAKE_OSX_ARCHITECTURES i386 ppc x86_64 CACHE STRING "change to needed architecture for a smaller library" FORCE)
+-
+ PROJECT(portmidi)
+ 
+ if(UNIX)
+@@ -68,10 +66,3 @@
+ include_directories(pm_common porttime)
+ add_subdirectory(pm_common)
+ 
+-add_subdirectory(pm_test)
+-
+-add_subdirectory(pm_dylib)
+-
+-# Cannot figure out how to make an xcode Java application with CMake
+-add_subdirectory(pm_java)
+-
+--- a/pm_common/CMakeLists.txt
++++ b/pm_common/CMakeLists.txt
+@@ -21,13 +21,6 @@
+   set(LINUX_FLAGS "-DPMALSA")
+ endif(APPLE OR WIN32)
+ 
+-if(APPLE)
+-  set(CMAKE_OSX_SYSROOT /Developer/SDKs/MacOSX10.5.sdk CACHE 
+-      PATH "-isysroot parameter for compiler" FORCE)
+-  set(CMAKE_C_FLAGS "-mmacosx-version-min=10.5" CACHE 
+-      STRING "needed in conjunction with CMAKE_OSX_SYSROOT" FORCE)
+-endif(APPLE)
+-
+ macro(prepend_path RESULT PATH)
+   set(${RESULT})
+   foreach(FILE ${ARGN})
+@@ -109,20 +102,3 @@
+ set_target_properties(portmidi-static PROPERTIES OUTPUT_NAME "portmidi_s")
+ target_link_libraries(portmidi-static ${PM_NEEDED_LIBS})
+ 
+-# define the jni library
+-include_directories(${JAVA_INCLUDE_PATHS})
+-
+-set(JNISRC ${LIBSRC} ../pm_java/pmjni/pmjni.c)
+-add_library(pmjni SHARED ${JNISRC})
+-target_link_libraries(pmjni ${JNI_EXTRA_LIBS})
+-set_target_properties(pmjni PROPERTIES EXECUTABLE_EXTENSION "jnilib")
+-
+-# install the libraries (Linux and Mac OS X command line)
+-if(UNIX)
+-  INSTALL(TARGETS portmidi-static pmjni
+-    LIBRARY DESTINATION /usr/local/lib
+-    ARCHIVE DESTINATION /usr/local/lib)
+-# .h files installed by pm_dylib/CMakeLists.txt, so don't need them here
+-#  INSTALL(FILES portmidi.h ../porttime/porttime.h
+-#    DESTINATION /usr/local/include)
+-endif(UNIX)