2018-04-30 22:31:21 +02:00
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# Compiling Apache on Ubuntu
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On a clean 14.04 machine I will build apache.
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```
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>pwd
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/vagrant
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>more /etc/lsb-release
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DISTRIB_ID=Ubuntu
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DISTRIB_RELEASE=14.04
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DISTRIB_CODENAME=trusty
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DISTRIB_DESCRIPTION="Ubuntu 14.04.2 LTS"
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```
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## Step 1.
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Install `gllvm`.
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```
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>export GOPATH=/vagrant/go
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>mkdir -p ${GOPATH}
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>go get github.com/SRI-CSL/gllvm/cmd/...
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>export PATH=${GOPATH}/bin:${PATH}
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```
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## Step 2.
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I am only going to build apache, not apr, so I first install the prerequisites.
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```
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>sudo apt-get install llvm libclang-dev clang libapr1-dev libaprutil1-dev
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2018-05-08 19:57:37 +02:00
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```
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Note `gclang` is agnostic with respect to llvm versions
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2018-04-30 22:31:21 +02:00
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so feel free to install a more recent version if you
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wish. However, if you are going to use dragonegg the llvm version is
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tightly coupled to the gcc and plugin versions you are using.
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## Step 3.
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Configure the gllvm tool to be relatively quiet:
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```
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>export WLLVM_OUTPUT_LEVEL=WARNING
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>export WLLVM_OUTPUT_FILE=/vagrant/apache-build.log
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```
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## Step 4.
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Fetch apache, untar, configure, then build:
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```
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>wget https://archive.apache.org/dist/httpd/httpd-2.4.33.tar.gz
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>tar xfz httpd-2.4.33.tar.gz
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>cd httpd-2.4.33
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>CC=gclang ./configure
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>make
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```
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## Step 5.
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Extract the bitcode.
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```
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>get-bc httpd
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```
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