Compiling Apache on Ubuntu

On a clean 14.04 machine I will build apache.

>pwd

/vagrant

>more /etc/lsb-release

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.2 LTS"

Step 1.

Install gllvm.

>export GOPATH=/vagrant/go

>mkdir -p ${GOPATH}

>go get github.com/SRI-CSL/gllvm/cmd/...

>export PATH=${GOPATH}/bin:${PATH}

Step 2.

I am only going to build apache, not apr, so I first install the prerequisites.

>sudo apt-get install llvm libclang-dev clang libapr1-dev libaprutil1-dev

Note gclang is agnostic with respect to llvm versions so feel free to install a more recent version if you wish. However, if you are going to use dragonegg the llvm version is tightly coupled to the gcc and plugin versions you are using.

Step 3.

Configure the gllvm tool to be relatively quiet:

>export WLLVM_OUTPUT_LEVEL=WARNING
>export WLLVM_OUTPUT_FILE=/vagrant/apache-build.log

Step 4.

Fetch apache, untar, configure, then build:

>wget  https://archive.apache.org/dist/httpd/httpd-2.4.33.tar.gz

>tar xfz httpd-2.4.33.tar.gz

>cd httpd-2.4.33

>CC=gclang ./configure

>make

Step 5.

Extract the bitcode.

>get-bc httpd

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