Try to make embedded HRTF data sets work on OSX

Alc/hrtf.c

@@ -908,6 +908,31 @@ static const ALubyte *GetResource(int name, size_t *size)
     return LockResource(res);
 }
 
+#elif defined(__APPLE__)
+
+#include <Availability.h>
+#include <mach-o/getsect.h>
+
+static const ALubyte *GetResource(int name, size_t *size)
+{
+#if defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && (__MAC_OS_X_VERSION_MAX_ALLOWED >= 1070)
+    /* NOTE: OSX 10.7 and up need to call getsectiondata(&_mh_execute_header, ...). However, that
+     * call requires 10.7.
+     */
+    if(name == IDR_DEFAULT_44100_MHR)
+        return getsectiondata(&_mh_execute_header, "binary", "default_44100_mhr", size);
+    if(name == IDR_DEFAULT_48000_MHR)
+        return getsectiondata(&_mh_execute_header, "binary", "default_48000_mhr", size);
+#else
+    if(name == IDR_DEFAULT_44100_MHR)
+        return getsectdata("binary", "default_44100_mhr", size);
+    if(name == IDR_DEFAULT_48000_MHR)
+        return getsectdata("binary", "default_48000_mhr", size);
+#endif
+    *size = 0;
+    return NULL;
+}
+
 #else
 
 extern const ALubyte _binary_default_44100_mhr_start[] HIDDEN_DECL;

CMakeLists.txt

@@ -1108,6 +1108,22 @@ option(ALSOFT_EMBED_HRTF_DATA "Embed the HRTF data files (increases library foot
 if(ALSOFT_EMBED_HRTF_DATA)
     if(WIN32)
         set(ALC_OBJS  ${ALC_OBJS} Alc/hrtf_res.rc)
+    elseif(APPLE)
+        macro(add_custom_binary FILENAME BIN_NAME)
+            set(outfile ${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/${FILENAME}${CMAKE_C_OUTPUT_EXTENSION})
+            set(stubfile ${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/${FILENAME}.stub${CMAKE_C_OUTPUT_EXTENSION})
+            add_custom_command(OUTPUT ${outfile}
+                DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/hrtf/${FILENAME}"
+                WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/hrtf"
+                COMMAND "${CMAKE_C_COMPILER}" -o "${stubfile}" -c /dev/null
+                COMMAND "${CMAKE_LINKER}" -r -o "${outfile}" -sectcreate binary ${BIN_NAME} ${FILENAME} "${stubfile}"
+                COMMENT "Generating ${FILENAME}${CMAKE_C_OUTPUT_EXTENSION}"
+                VERBATIM
+            )
+            set(ALC_OBJS  ${ALC_OBJS} ${outfile})
+        endmacro()
+        add_custom_binary(default-44100.mhr "default_44100_mhr")
+        add_custom_binary(default-48000.mhr "default_48000_mhr")
     else()
         set(FILENAMES default-44100.mhr default-48000.mhr)
         foreach(FILENAME ${FILENAMES})