Changeset 4f3fe48 in buchla-emu

Timestamp:

07/23/2017 04:41:10 PM (7 years ago)

Author:

Thomas Lopatic <thomas@…>

Branches:

master

Children:

8e1b163

Parents:

2a75e87

Message:

Support cross-build for Windows.

Files:

• Makefile (modified) (6 diffs)
• readme.txt (modified) (2 diffs)

Makefile

@@ -1 +1 @@
 OS :=                   $(shell uname)
 
+ifndef WIN
+GCC :=                  gcc
 SDL2 :=                 /opt/sdl2
+else
+GCC :=                  x86_64-w64-mingw32-gcc
+SDL2 :=                 /opt/sdl2-win
+endif
+
 SDL2_INC :=             $(SDL2)/include
 SDL2_LIB :=             $(SDL2)/lib
@@ -16 +23 @@
                                 -I cpu -I emu -I build -I $(SDL2_INC)
 
+ifndef WIN
 ifeq ($(OS), Linux)
 FLAGS_EMU +=    -D EMU_LINUX
@@ -42 +50 @@
                                 -l iconv
 endif
+else
+FLAGS_EMU +=    -D EMU_WIN
+FLAGS_LNK :=    $(FLAGS) -Wall -Wextra
+LIBS :=                 -l mingw32 \
+                                $(SDL2_LIB)/libSDL2.a \
+                                $(SDL2_LIB)/libSDL2main.a \
+                                $(SDL2_LIB)/libSDL2_ttf.a \
+                                $(SDL2_LIB)/libfreetype.a \
+                                -l gdi32 \
+                                -l imm32 \
+                                -l ole32 \
+                                -l oleaut32 \
+                                -l version \
+                                -l winmm
+endif
 
 HEADERS :=              $(wildcard cpu/*.h) $(wildcard emu/*.h)
@@ -67 +90 @@
 
 build/%.o:              build/%.c $(HEADERS)
-                                gcc $(FLAGS_CPU) -c -o $@ $<
+                                $(GCC) $(FLAGS_CPU) -c -o $@ $<
 
 CPU_C :=                m68kcpu.c m68kdasm.c
@@ -74 +97 @@
 
 build/%.o:              cpu/%.c $(HEADERS) $(GEN_HP) | build
-                                gcc $(FLAGS_CPU) -c -o $@ $<
+                                $(GCC) $(FLAGS_CPU) -c -o $@ $<
 
 EMU_C :=                main.c cpu.c vid.c fpu.c tim.c lcd.c ser.c mid.c fdd.c snd.c \
@@ -82 +105 @@
 
 build/%.o:              emu/%.c $(HEADERS) | build
-                                gcc $(FLAGS_EMU) -c -o $@ $<
+                                $(GCC) $(FLAGS_EMU) -c -o $@ $<
 
 buchla:                 $(CPU_OP) $(GEN_OP)     $(EMU_OP)
-                                gcc $(FLAGS_LNK) -o buchla \
+                                $(GCC) $(FLAGS_LNK) -o buchla \
                                 $(CPU_OP) $(GEN_OP) $(EMU_OP) \
                                 $(LIBS)

readme.txt

@@ -32 +32 @@
   https://www.freetype.org/
 
-Currently, the emulator supports Linux and OS X. A port to Windows
-should be pretty easy, given that it doesn't use any platform-specific
-features, just C99 and SDL2.
+Currently, we build the emulator code natively on Linux and OS X. The
+Windows version is cross-compiled on Linux using a x86_64-w64-mingw32
+toolchain.
 
-Our Makefile expects all of the above libraries to reside in
-/opt/sdl2. This is how we typically install them:
+For Linux and OS X, our Makefile expects all of the above libraries to
+reside in /opt/sdl2. This is how we typically install them:
 
   # Build and install FreeType first
@@ -85 +85 @@
 
 from the top-level directory of this repository to build the emulator.
+
+The cross-build for Windows is done similarly, with the following
+differences when configuring the libraries:
+
+  * We use "--prefix=/opt/sdl2-win" instead of "--prefix=/opt/sdl2",
+    so that the Windows versions of the libraries go to a different
+    directory.
+
+  * We additionally specify "--host=x86_64-w64-mingw32" to enable
+    cross-compilation.
+
+Then, to cross-build the emulator, invoke
+
+  make buchla WIN=1
+
+from the top-level directory of this repository.