Linking Issues on MacOS X 10.6.5

[Stoney]

Also the FPC wiki says that you don't need to use the Framework, you CAN use the Unix way.

This is not recommended. The end-user would need to install libSDL*.dylib and all SDL friends on their computer. The framework way is much better for deployment.

I wouldn't bundle it with WineBottler, native applications are always faster than applications running through Wine.

If you use "fpc -Mobjfpc -ve -k-lSDLmain -k-framework -kSDL -k-framework -kSDL_image -k-framework -kCocoa -Fl/usr/X11/lib fprl.pp" and the JEDI-SDL headers everything should work fine.

Alternatively, you can add

{$IFDEF DARWIN}
{$PASCALMAINNAME SDL_main} // Needed for Snow Leopard
{$linklib SDLmain}

{$linkframework Cocoa}
{$linkframework SDL}
{$linkframework OpenGL}

{$linkframework SDL_image}
{$linkframework SDL_mixer} // If you are using SDL_mixer
{$IFDEF USE_SDL_GFX} // If you are using SDL_gfx
{$linkframework SDL_net} // If you are using SDL_net
{$ENDIF}

at the top of your main source file and compile your application with: fpc -Mobjfpc -ve -Fl/usr/X11/lib fprl.pp

Btw: If you are still interested in Universal binaries, this is my Mac and Linux compile script which compiles an universal binary, copies all my assets and creates a nice .app file around the application. I've been using this in all my Mac FreePascal SDL game projects.

#!/bin/sh

FPC_BIN=`which fpc`
BIN_FOLDER="../bin"
SRC_MAIN="main.lpr"
LIB_FOLDER="../lib"
EXEC_NAME="execname"
APP_NAME="My Application Name"


cd ../source
if [ -f /System/Library/Frameworks/Cocoa.framework/Cocoa ]
then

FPC_BIN=`which ppc386`

# Compiling Intel binary
${FPC_BIN} @config.cfg -k-L/usr/X11R6/lib ${SRC_MAIN}
mv ${BIN_FOLDER}/main ${BIN_FOLDER}/main-intel
rm ${BIN_FOLDER}/link.res
rm ${BIN_FOLDER}/*.o ${BIN_FOLDER}/*.ppu
rm ${SRC_HEADER}/*.o ${SRC_HEADER}/*.ppu ${SRC_HEADER}/*.dcu ${SRC_HEADER}/*.a


FPC_BIN=`which ppcppc`

# Compiling PowerPC binary
${FPC_BIN} @config.cfg -k"-L${LIB_FOLDER}/frameworks -L/usr/X11R6/lib" ${SRC_MAIN} -XR/Developer/SDKs/MacOSX10.5.sdk/ -k-macosx_version_min -k10.5
mv ${BIN_FOLDER}/main ${BIN_FOLDER}/main-ppc
rm ${BIN_FOLDER}/*.o ${BIN_FOLDER}/*.ppu


# Creating universal binary
if [ -f ${BIN_FOLDER}/main-intel ] && [ -f ${BIN_FOLDER}/main-ppc ]
then
strip ${BIN_FOLDER}/main-intel
strip ${BIN_FOLDER}/main-ppc

lipo -create ${BIN_FOLDER}/main-intel ${BIN_FOLDER}/main-ppc -output ${BIN_FOLDER}/${EXEC_NAME}
rm -rf ${BIN_FOLDER}/main-intel
rm -rf ${BIN_FOLDER}/main-ppc
fi

if [ -d "${BIN_FOLDER}/${APP_NAME}.app" ]
then
echo " ... Removing old application"
rm -rf "${BIN_FOLDER}/${APP_NAME}.app"
fi

echo " ... Creating Application Bundle"

mkdir "${BIN_FOLDER}/${APP_NAME}.app"
mkdir "${BIN_FOLDER}/${APP_NAME}.app/Contents"
mkdir "${BIN_FOLDER}/${APP_NAME}.app/Contents/MacOS"
mkdir "${BIN_FOLDER}/${APP_NAME}.app/Contents/Resources"
mkdir "${BIN_FOLDER}/${APP_NAME}.app/Contents/Frameworks"

cp -R ../resources/ "${BIN_FOLDER}/${APP_NAME}.app/Contents/Resources/"

# Copy frameworks from System
cp -R /Library/Frameworks/SDL.framework "${BIN_FOLDER}/${APP_NAME}.app/Contents/Frameworks/"
cp -R /Library/Frameworks/SDL_mixer.framework "${BIN_FOLDER}/${APP_NAME}.app/Contents/Frameworks/"
cp -R /Library/Frameworks/SDL_ttf.framework "${BIN_FOLDER}/${APP_NAME}.app/Contents/Frameworks/"

mv "${BIN_FOLDER}/${EXEC_NAME}" "${BIN_FOLDER}/${APP_NAME}.app/Contents/MacOS/"

echo "<?xml version='1.0' encoding='UTF-8'?>\
<!DOCTYPE plist PUBLIC \"-//Apple Computer//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\
<plist version=\"1.0\">\
<dict>\
<key>CFBundleDevelopmentRegion</key>\
<string>English</string>\
<key>CFBundleExecutable</key>\
<string>${EXEC_NAME}</string>\
<key>CFBundleIconFile</key>\
<string>logo.icns</string>\
<key>CFBundleIdentifier</key>\
<string>com.freezedev</string>\
<key>CFBundleInfoDictionaryVersion</key>\
<string>6.0</string>\
<key>CFBundleName</key>\
<string>${APP_NAME}</string>\
<key>CFBundlePackageType</key>\
<string>APPL</string>\
<key>CFBundleSignature</key>\
<string>PSGR</string>\
<key>CFBundleVersion</key>\
<string>1.0</string>\
<key>CSResourcesFileMapped</key>\
<true/>\
</dict>\
</plist>" >> "${BIN_FOLDER}/${APP_NAME}.app/Contents/Info.plist"

echo "APPLFDRS" >> "${BIN_FOLDER}/${APP_NAME}.app/Contents/PkgInfo"

else
if [ -f /usr/lib64 ]
then
${FPC_BIN} @config.cfg ${SRC_MAIN}
rm ${BIN_FOLDER}/*.o ${BIN_FOLDER}/*.ppu
else
${FPC_BIN} @config.cfg ${SRC_MAIN}
rm ${BIN_FOLDER}/*.o ${BIN_FOLDER}/*.ppu
fi

if [ -f "${BIN_FOLDER}/main" ]
then
mv "${BIN_FOLDER}/main" "${BIN_FOLDER}/${EXEC_NAME}"
fi
fi

If you want to use this for your projects, you need to change the variables at the top (BIN_FOLDER, SRC_MAIN, LIB_FOLDER, EXEC_NAME and APP_NAME) to the value you want them to be. You need to delete the reference to config.cfg if you are not using a config file for your project and libSDLmain.a should be in LIB_FOLDER/frameworks for PowerPC compilation.

[code_glitch]

oooh, shiny. i must say; i do appreciate bash scripts a lot. now where can i use this seeing i dont have mac? hmm. tough one

[Mario Donick]

@Stoney, thank you! This looks like a great solution, I'll try this now and report back soon.

Edit:

I added the IFDEFs at the beginning of my main file. Here the results:


1. When I use the single compiler call you gave me above, with the JEDI SDL headers (not the ones included in FPC), the game compiles and links, but crashes as soon as it tries to call SDL_INIT.

2. When I use your build script, it tells me:

Linking fprl
ld: warning: in ./libSDLmain.a, file was built for unsupported file format which is not the architecture being linked (i386)
Undefined symbols:
  "_main", referenced from:
      __start in crt1.o
     (maybe you meant: _SDL_main)

So nothing has changed.

The libSDLmain file was created by me some days ago using the "devel-lite" folder in the SDL for Mac download, and using the following compiler call (as stated in the FreePascal wiki):

gcc -c -o SDLMain.o SDLMain.m -I /Library/Frameworks/SDL.framework/Headers
ar r libSDLMain.a SDLMain.o
ranlib libSDLMain.a

But somehow the resulting library seems not to be correct.

[Stoney]

The problem seems to be that the libSDLmain.a you made is 64 bit, which is done by default if you have Snow Leopard installed. You need to explicitly compile the library for i386 and PowerPC if you plan to make Universal Binaries.
You can have my libSDLmain.a (it has i386, x64_64 and ppc all in one file): Download here

Edit: If you use my build script you might want to change CFBundleIdentifier and CFBundleSignature for your application.

[Mario Donick]

Yes!! Stoney, this did the trick! :-D

[Stoney]

Awesome I guess we really need a tutorial for new Mac OS X users.
Btw: If you would want or need to compile libSDLmain.a for yourself for i386 and ppc platforms you need to call this line

gcc -c -o SDLMain.o SDLMain.m -I /Library/Frameworks/SDL.framework/Headers

with an additional --arch i386 or --arch ppc parameter depending on which platform you need.

[code_glitch]

Sweet - so I guess this is solved now! Hooray!

Quick note to apple: Windows users have functionality disabled in their versions of windows (unless you have ultimate). In your case, you either include functionality or you dont. For the next Mac OS X version - please include the functionality 'Common Sense' and 'Helpfulness'. I've never seen such a long thread for a simple linking issue. Apple: Pioneering in unexpected ways.