This latest L-FCPA patch is released for gcc-4.7.2.

NOTE: To build gcc-4.7.2 refer to the following instructions

Step I : Downloading the gcc source code tarball

• Make a new folder 'lipta', and cd to it
       ~/$. mkdir lipta
       ~/$. cd lipta
• Download gcc-4.7.2 tarball in this folder.
• Download the required version of patch file in this folder.
• Untar the gcc-4.7.2 tarball
       ~/lipta$. tar -xvf gcc-4.7.2-tar.gz
  After untarring, you will see a folder 'gcc-4.7.2'
• Make the 'build' and 'install' directories.
       ~/lipta$. mkdir build
       ~/lipta$. mkdir install
  

Step II : Building GCC 4.7.2

• Let us assume that $INSTALL is the absolute path of install directory, and $SRC is the absolute path of gcc-4.7.2 directory.
• cd to the build directory.
       ~/lipta$. cd build
• Configure gcc-4.7.2. For example, if we wish to build a C compiler, type the following to configure gcc.
       ~/lipta/build$. $SRC/configure --enable-languages=c --prefix=$INSTALL
  If you are on a 64 bit system, disable multilib during configure by the option --disable-multilib
• After configuring successfully, build gcc-4.7.2.
       ~/lipta/build$. make
• If a successful make, install the gcc binaries in the install directory.
       ~/lipta/build$. make install

Now use the pristine gcc-4.7.2 build for the l-fcpa plugin by following the steps below:

Step I : Building the plugin

• Untar the tarball
       ~/$.tar -xvf lipta-plugin-gcc-4.7.2.tar.gz
  After untarring, you will see a folder "lipta-gcc-4.7-V1.1".
• Change directory to this folder
       ~/$.cd lipta-plugin-gcc-4.7-V1.1
• Make changes in the Makefile
       ~/lipta-plugin-gcc-4.7-V1.1$. vi Makefile
  Modify the value of INSTALL and NEW_PATH with $INSTALL and $SRC/gcc, respectively
• Hook the plugin dynamically in gcc
       ~/lipta-plugin-gcc-4.7-V1.1$. make
  You will see a file named plugin.so after the successful make.

Step II : Testing L-FCPA

• Create any sample program "test.c" inside the directory lipta-gcc-4.7-V1.1. (As a trial test.c is already given)
• Run the command
       ~/lipta-plugin-gcc-4.7-V1.1$. make test
• Inspect the generated lipta dump test.c.233i.lipta to analyze the information gathered by the pass.
• Use the following to delete all dump files
       ~/lipta-plugin-gcc-4.7-V1.1$. make clean