Compile APC for XAMPP on Snow Leopard

I’m using XAMPP as my local development environment on Snow Leopard. The XAMPP package does not include APC (Alternative PHP Cache). If we simply do a PECL install, you’ll find that PHP complains about the APC architecture. This happens because the XAMPP for OS X is 32 bit, and Snow Leopard is 64 bit, hence PECL builds a 64 bit

To overcome this issue, we need to manually compile APC from source and here is how I did it.

First, download APC source from and double click on the tar file within finder will unzip it.


cd ~/Downloads/APC-3.1.3p1/APC-3.1.3p1/
MACOSX_DEPLOYMENT_TARGET=10.6 CFLAGS="-arch i386 -g -Os  -pipe -no-cpp-precomp" CCFLAGS="-arch i386 -g -Os  -pipe" CXXFLAGS="-arch i386 -g -Os  -pipe" LDFLAGS="-arch i386 -bind_at_load" ./configure --enable-apc --with-apxs --with-php-config=/Applications/XAMPP/xamppfiles/bin/php-config-5.3.1
sudo cp modules/ /Applications/XAMPP/xamppfiles/lib/php/php-5.3.1/extensions/no-debug-non-zts-20090626/.

We should see no errors and we should have the new APC so file copied into our PHP extension directory.

Next, enable APC from php.ini by adding the following 2 lines
apc.shm_size = 32

Now if you do php -m from command line, you’ll see APC listed as a loaded module.

Hope it helps and save you from pulling your hair out.


Published: 2010-05-04