macOS support; thanks to @MrYadro

This should support ARM64 and x86-64.
-target flag based on information from
https://developer.apple.com/documentation/xcode/building_a_universal_macos_binary#3618377.

.travis.yml

@@ -1,15 +1,44 @@
 language: cpp
-os: linux
 dist: focal
-matrix:
+os: linux
+jobs:
   include:
   - env: TARGET=release_linux-amd64-librw_gl3_glfw-oal
+    os: linux
   - env: TARGET=debug_linux-amd64-librw_gl3_glfw-oal
+    os: linux
+  - env: TARGET=release_macosx-amd64-librw_gl3_glfw-oal PREMAKE5=premake-5.0.0-alpha15
+    compiler: clang
+    os: osx
+    osx_image: xcode12u
+  - env: TARGET=debug_macosx-amd64-librw_gl3_glfw-oal PREMAKE5=premake-5.0.0-alpha15
+    compiler: clang
+    os: osx
+    osx_image: xcode12u
+addons:
+  apt:
+    update: true
+    packages:
+      - linux-libc-dev
+      - libopenal-dev
+      - libglew-dev
+      - libglfw3-dev
+      - libsndfile1-dev
+      - libmpg123-dev
+      - gcc-8-multilib
+      - g++-8-multilib
+  homebrew:
+    packages:
+      - libsndfile
+      - mpg123
+      - glew
+      - glfw
+      - openal-soft
 script:
-  - sudo apt-get update
-  - sudo apt-get -y install linux-libc-dev libopenal-dev libglew-dev libglfw3-dev libsndfile1-dev libmpg123-dev gcc-8-multilib g++-8-multilib
   - mkdir -p "$TRAVIS_BUILD_DIR/build"
   - cd "$TRAVIS_BUILD_DIR"
-  - ./premake5Linux --with-librw gmake2
+  - if [ "$TRAVIS_OS_NAME" = linux ]; then ./premake5Linux --with-librw gmake2; fi
+  - if [ "$TRAVIS_OS_NAME" = osx ]; then curl -L -o "${PREMAKE5}.zip" "https://github.com/premake/premake-core/releases/download/v5.0.0-alpha15/${PREMAKE5}-src.zip" && unzip -q "${PREMAKE5}.zip" && cd "$PREMAKE5" && make -f Bootstrap.mak osx && cd .. && "./${PREMAKE5}/bin/release/premake5" --with-librw gmake2; fi
   - cd build
-  - CC=gcc-8 CXX=g++-8 make config=$TARGET -j4 verbose=1
+  - if [ "$TRAVIS_OS_NAME" = linux ]; then env CC=gcc-8 CXX=g++-8 make config=$TARGET -j4 verbose=1; fi
+  - if [ "$TRAVIS_OS_NAME" = osx ]; then make config=$TARGET -j4 verbose=1; fi

premake5.lua

@@ -85,6 +85,12 @@ workspace "re3"
 			"bsd-amd64-librw_gl3_glfw-oal"
 		}
 
+	filter { "system:macosx" }
+		platforms {
+			"macosx-amd64-librw_gl3_glfw-oal",
+			"macosx-arm64-librw_gl3_glfw-oal",
+		}
+
 	filter "configurations:Debug"
 		defines { "DEBUG" }
 		
@@ -101,6 +107,9 @@ workspace "re3"
 	filter { "platforms:bsd*" }
 		system "bsd"
 
+	filter { "platforms:macosx*" }
+		system "macosx"
+	
 	filter { "platforms:*x86*" }
 		architecture "x86"
 		
@@ -110,6 +119,12 @@ workspace "re3"
 	filter { "platforms:*arm*" }
 		architecture "ARM"
 
+	filter { "platforms:macosx-arm64-*" }
+		buildoptions { "-target", "arm64-apple-macos11", "-std=gnu++14" }
+
+	filter { "platforms:macosx-amd64-*" }
+		buildoptions { "-target", "x86_64-apple-macos10.12", "-std=gnu++14" }
+
 	filter { "platforms:*librw_d3d9*" }
 		defines { "RW_D3D9" }
 		if(not _OPTIONS["with-librw"]) then
@@ -163,6 +178,13 @@ project "librw"
 		includedirs { "/usr/local/include" }
 		libdirs { "/usr/local/lib" }
 
+	filter "platforms:macosx*"
+		-- Support MacPorts and Homebrew
+		includedirs { "/opt/local/include" }
+		includedirs {"/usr/local/include" }
+		libdirs { "/opt/local/lib" }
+		libdirs { "/usr/local/lib" }
+	
 	filter "platforms:*RW33*"
 		flags { "ExcludeFromBuild" }
 	filter  {}
@@ -277,6 +299,11 @@ project "re3"
 	filter "platforms:bsd*oal"
 		links { "openal", "mpg123", "sndfile", "pthread" }
 
+	filter "platforms:macosx*oal"
+		links { "openal", "mpg123", "sndfile", "pthread" }
+		includedirs { "/usr/local/opt/openal-soft/include" }
+		libdirs { "/usr/local/opt/openal-soft/lib" }
+	
 	if _OPTIONS["with-opus"] then
 		filter {}
 		links { "libogg" }
@@ -329,3 +356,11 @@ project "re3"
 		links { "GL", "GLEW", "glfw", "sysinfo" }
 		includedirs { "/usr/local/include" }
 		libdirs { "/usr/local/lib" }
+
+	filter "platforms:macosx*gl3_glfw*"
+		links { "GLEW", "glfw" }
+		linkoptions { "-framework OpenGL" }
+		includedirs { "/opt/local/include" }
+		includedirs { "/usr/local/include" }
+		libdirs { "/opt/local/lib" }
+		libdirs { "/usr/local/lib" }

src/core/CdStreamPosix.cpp

@@ -4,6 +4,7 @@
 #include <pthread.h>
 #include <signal.h>
 #include <semaphore.h>
+#include <stdlib.h>
 #include <sys/types.h>
 #include <unistd.h>
 #include <sys/time.h>
@@ -21,6 +22,30 @@
 #define CDDEBUG(f, ...)   debug ("%s: " f "\n", "cdvd_stream", ## __VA_ARGS__)
 #define CDTRACE(f, ...)   printf("%s: " f "\n", "cdvd_stream", ## __VA_ARGS__)
 
+#ifdef __APPLE__
+#define COMPAT_SEM_T sem_t *
+int compat_sem_init(sem_t **ptr, __attribute__((unused)) int x, __attribute__((unused)) int y) {
+  *ptr = sem_open("/semaphore", O_CREAT, 0644, 1);
+  return *ptr == SEM_FAILED ? -1 : 0;
+}
+int compat_sem_post(sem_t **sem) {
+  return sem_post(*sem);
+}
+int compat_sem_wait(sem_t **sem) {
+  return sem_wait(*sem);
+}
+int compat_sem_destroy(sem_t **sem, const char * name) {
+  sem_close(*sem);
+  sem_unlink(name);
+}
+#else
+#define COMPAT_SEM_T sem_t
+#define compat_sem_post sem_post
+#define compat_sem_destroy(x, y) sem_destroy(x)
+#define compat_sem_init sem_init
+#define compat_sem_wait sem_wait
+#endif
+
 // #define ONE_THREAD_PER_CHANNEL // Don't use if you're not on SSD/Flash. (Also you may want to benefit from this via using all channels in Streaming.cpp)
 
 bool flushStream[MAX_CDCHANNELS];
@@ -36,9 +61,9 @@ struct CdReadInfo
 #ifdef ONE_THREAD_PER_CHANNEL
 	int8 nThreadStatus; // 0: created 1:initalized 2:abort now
   pthread_t pChannelThread;
-    sem_t pStartSemaphore;
+  COMPAT_SEM_T pStartSemaphore;
 #endif
-	sem_t pDoneSemaphore; // used for CdStreamSync
+  COMPAT_SEM_T pDoneSemaphore; // used for CdStreamSync
   int32 hFile;
 };
 
@@ -51,7 +76,7 @@ char *gImgNames[MAX_CDIMAGES];
 
 #ifndef ONE_THREAD_PER_CHANNEL
 pthread_t _gCdStreamThread;
-sem_t gCdStreamSema; // released when we have new thing to read(so channel is set)
+COMPAT_SEM_T gCdStreamSema; // released when we have new thing to read(so channel is set)
 int8 gCdStreamThreadStatus; // 0: created 1:initalized 2:abort now
 Queue gChannelRequestQ;
 bool _gbCdStreamOverlapped;
@@ -76,7 +101,7 @@ CdStreamInitThread(void)
 	gChannelRequestQ.tail = 0;
 	gChannelRequestQ.size = gNumChannels + 1;
 	ASSERT(gChannelRequestQ.items != nil );
-    status = sem_init(&gCdStreamSema, 0, 0);
+    status = compat_sem_init(&gCdStreamSema, 0, 0);
 #endif
 
 
@@ -91,7 +116,7 @@ CdStreamInitThread(void)
 	{
 		for ( int32 i = 0; i < gNumChannels; i++ )
 		{
-		    status = sem_init(&gpReadInfo[i].pDoneSemaphore, 0, 0);
+		    status = compat_sem_init(&gpReadInfo[i].pDoneSemaphore, 0, 0);
 
 			if (status == -1)
 			{
@@ -100,7 +125,7 @@ CdStreamInitThread(void)
 				return;
 			}
 #ifdef ONE_THREAD_PER_CHANNEL
-		    status = sem_init(&gpReadInfo[i].pStartSemaphore, 0, 0);
+		    status = compat_sem_init(&gpReadInfo[i].pStartSemaphore, 0, 0);
 
 			if (status == -1)
 			{
@@ -214,13 +239,13 @@ CdStreamShutdown(void)
     // Destroying semaphores and free(gpReadInfo) will be done at threads
 #ifndef ONE_THREAD_PER_CHANNEL
     gCdStreamThreadStatus = 2;
-    sem_post(&gCdStreamSema);
+    compat_sem_post(&gCdStreamSema);
 #endif
 
 #ifdef ONE_THREAD_PER_CHANNEL
     for ( int32 i = 0; i < gNumChannels; i++ ) {
         gpReadInfo[i].nThreadStatus = 2;
-        sem_post(&gpReadInfo[i].pStartSemaphore);
+        compat_sem_post(&gpReadInfo[i].pStartSemaphore);
     }
 #endif
 }
@@ -254,10 +279,10 @@ CdStreamRead(int32 channel, void *buffer, uint32 offset, uint32 size)
 
 #ifndef ONE_THREAD_PER_CHANNEL
     AddToQueue(&gChannelRequestQ, channel);
-    if ( sem_post(&gCdStreamSema) != 0 )
+    if ( compat_sem_post(&gCdStreamSema) != 0 )
         printf("Signal Sema Error\n");
 #else
-    if ( sem_post(&gpReadInfo[channel].pStartSemaphore) != 0 )
+    if ( compat_sem_post(&gpReadInfo[channel].pStartSemaphore) != 0 )
         printf("Signal Sema Error\n");
 #endif
 
@@ -332,7 +357,7 @@ CdStreamSync(int32 channel)
     {
         pChannel->bLocked = true;
 
-        sem_wait(&pChannel->pDoneSemaphore);
+        compat_sem_wait(&pChannel->pDoneSemaphore);
     }
 
     pChannel->bReading = false;
@@ -383,12 +408,12 @@ void *CdStreamThread(void *param)
 
 #ifndef ONE_THREAD_PER_CHANNEL
     while (gCdStreamThreadStatus != 2) {
-		sem_wait(&gCdStreamSema);
+		compat_sem_wait(&gCdStreamSema);
         int32 channel = GetFirstInQueue(&gChannelRequestQ);
 #else
     int channel = *((int*)param);
     while (gpReadInfo[channel].nThreadStatus != 2){
-		sem_wait(&gpReadInfo[channel].pStartSemaphore);
+		compat_sem_wait(&gpReadInfo[channel].pStartSemaphore);
 #endif
 		ASSERT( channel < gNumChannels );
 
@@ -437,20 +462,20 @@ void *CdStreamThread(void *param)
 
 		if ( pChannel->bLocked )
 		{
-			sem_post(&pChannel->pDoneSemaphore);
+			compat_sem_post(&pChannel->pDoneSemaphore);
 		}
 		pChannel->bReading = false;
 	}
 #ifndef ONE_THREAD_PER_CHANNEL
 	for ( int32 i = 0; i < gNumChannels; i++ )
 	{
-        sem_destroy(&gpReadInfo[i].pDoneSemaphore);
+		compat_sem_destroy(&gpReadInfo[i].pDoneSemaphore, "/semaphoredone");
 	}
-    sem_destroy(&gCdStreamSema);
+	compat_sem_destroy(&gCdStreamSema, "/semaphore");
 	free(gChannelRequestQ.items);
 #else
-    sem_destroy(&gpReadInfo[channel].pStartSemaphore);
-    sem_destroy(&gpReadInfo[channel].pDoneSemaphore);
+	compat_sem_destroy(&gpReadInfo[channel].pStartSemaphore, "/semaphorestart");
+	compat_sem_destroy(&gpReadInfo[channel].pDoneSemaphore, "/semaphoredone");
 #endif
 	free(gpReadInfo);
 	pthread_exit(nil);

src/skel/glfw/glfw.cpp

@@ -81,7 +81,12 @@ DWORD _dwOperatingSystemVersion;
 #include "resource.h"
 #else
 long _dwOperatingSystemVersion;
+#ifndef __APPLE__
 #include <sys/sysinfo.h>
+#else
+#include <mach/mach_host.h>
+#include <sys/sysctl.h>
+#endif
 #include <stddef.h>
 #include <locale.h>
 #include <signal.h>
@@ -445,15 +450,27 @@ psInitialize(void)
 #endif
 
 #endif
+#ifndef __APPLE__
 	struct sysinfo systemInfo;
 	sysinfo(&systemInfo);
-	
 	_dwMemAvailPhys = systemInfo.freeram;
-	_dwOperatingSystemVersion = OS_WINXP; // To fool other classes
-
 	debug("Physical memory size %u\n", systemInfo.totalram);
 	debug("Available physical memory %u\n", systemInfo.freeram);
-
+#else
+	uint64_t size = 0;
+	uint64_t page_size = 0;
+	size_t uint64_len = sizeof(uint64_t);
+	size_t ull_len = sizeof(unsigned long long);
+	sysctl((int[]){CTL_HW, HW_PAGESIZE}, 2, &page_size, &ull_len, NULL, 0);
+	sysctl((int[]){CTL_HW, HW_MEMSIZE}, 2, &size, &uint64_len, NULL, 0);
+	vm_statistics_data_t vm_stat;
+	mach_msg_type_number_t count = HOST_VM_INFO_COUNT;
+	host_statistics(mach_host_self(), HOST_VM_INFO, (host_info_t)&vm_stat, &count);
+	_dwMemAvailPhys = (uint64_t)(vm_stat.free_count * page_size);
+	debug("Physical memory size %llu\n", _dwMemAvailPhys);
+	debug("Available physical memory %llu\n", size);
+#endif
+	_dwOperatingSystemVersion = OS_WINXP; // To fool other classes
 #endif
 	TheText.Unload();