Fix amiga build (#5479)

.circleci/config.yml

@@ -52,7 +52,7 @@ jobs:
     steps:
       - checkout
       - run: Packaging/amiga/prep.sh
-      - run: PKG_CONFIG_PATH=/opt/m68k-amigaos/lib/pkgconfig/:/opt/m68k-amigaos/share/pkgconfig/ cmake -S. -Bbuild -DM68K_CPU=68040 -DM68K_FPU=hard -DM68K_COMMON="-s -ffast-math -O3 -noixemul -D__BIG_ENDIAN__ -D__AMIGA__ -fpermissive" ..
+      - run: PKG_CONFIG_PATH=/opt/m68k-amigaos/lib/pkgconfig/:/opt/m68k-amigaos/share/pkgconfig/ cmake -S. -Bbuild -DM68K_CPU=68040 -DM68K_FPU=hard -DM68K_COMMON="-s -fbbb=- -m68040 -ffast-math -O2 -noixemul -D__BIG_ENDIAN__ -D__AMIGA__ -fpermissive" ..
       - run: cd build && make -j2
       - store_artifacts: {path: ./build/devilutionx, destination: devilutionx_m68k}
   vita:

CMake/platforms/amiga.cmake

@@ -20,7 +20,7 @@ add_definitions(-Dfseeko=fseek)
 
 list(APPEND DEVILUTIONX_PLATFORM_LINK_LIBRARIES ZLIB::ZLIB)
 if(NOT WARPOS)
-  list(APPEND DEVILUTIONX_PLATFORM_LINK_LIBRARIES -ldebug)
+  list(APPEND DEVILUTIONX_PLATFORM_LINK_LIBRARIES -ldebug -noixemul)
 endif()
 
 file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/Packaging/amiga/devilutionx.info" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")

Packaging/amiga/prep.sh

@@ -9,7 +9,7 @@ export SYSROOT=/opt/$TARGET
 export M68K_CPU=68040
 export M68K_FPU=hard
 export M68K_CPU_FPU="-m${M68K_CPU} -m${M68K_FPU}-float"
-export M68K_COMMON="-s -ffast-math -fomit-frame-pointer"
+export M68K_COMMON="-s -ffast-math -fomit-frame-pointer -fbbb=-"
 export M68K_CFLAGS="${M68K_CPU_FPU} ${M68K_COMMON}"
 export M68K_CXXFLAGS="${M68K_CPU_FPU} ${M68K_COMMON}"
 

Source/utils/paths.cpp

@@ -88,9 +88,11 @@ const std::string &PrefPath()
 		prefPath = NxdkGetPrefPath();
 #else
 		prefPath = FromSDL(SDL_GetPrefPath("diasurgical", "devilution"));
+#if !defined(__amigaos__)
 		if (FileExistsAndIsWriteable("diablo.ini")) {
 			prefPath = std::string("." DIRECTORY_SEPARATOR_STR);
 		}
+#endif
 #endif
 	}
 	return *prefPath;
@@ -105,9 +107,11 @@ const std::string &ConfigPath()
 		configPath = NxdkGetPrefPath();
 #else
 		configPath = FromSDL(SDL_GetPrefPath("diasurgical", "devilution"));
+#if !defined(__amigaos__)
 		if (FileExistsAndIsWriteable("diablo.ini")) {
 			configPath = std::string("." DIRECTORY_SEPARATOR_STR);
 		}
+#endif
 #endif
 	}
 	return *configPath;

Source/utils/sdl2_to_1_2_backports.cpp

@@ -696,7 +696,7 @@ char *SDL_GetPrefPath(const char *org, const char *app)
 #else
 
 namespace {
-#if !defined(__QNXNTO__)
+#if !defined(__QNXNTO__) && !defined(__amigaos__)
 char *readSymLink(const char *path)
 {
 	// From sdl2-2.0.9/src/filesystem/unix/SDL_sysfilesystem.c
@@ -778,8 +778,9 @@ char *SDL_GetBasePath()
 #endif
 #if defined(__3DS__)
 	retval = SDL_strdup("file:sdmc:/3ds/devilutionx/");
-	return retval;
-#endif
+#elif defined(__amigaos__)
+	retval = SDL_strdup("PROGDIR:");
+#else
 
 	/* is a Linux-style /proc filesystem available? */
 	if (!retval && (access("/proc", F_OK) == 0)) {
@@ -826,7 +827,7 @@ char *SDL_GetBasePath()
 		if (ptr != NULL)
 			retval = ptr; /* oh well if it failed. */
 	}
-
+#endif
 	return retval;
 }
 
@@ -849,6 +850,9 @@ char *SDL_GetPrefPath(const char *org, const char *app)
 #if defined(__3DS__)
 	retval = SDL_strdup("sdmc:/3ds/devilutionx/");
 	return retval;
+#elif defined(__amigaos__)
+	retval = SDL_strdup("PROGDIR:");
+	return retval;
 #endif
 
 	if (!app) {