When you run make, you’re instructing it to essentially follow a set of build steps for a particular target. When make is called with no parameters, it runs the first target, which usually simply compiles the project. make install maps to the install target, which usually does nothing more than copy binaries into their destinations. … Read more
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In order to really understand the autotools utilities you have to remember where they come from: they come from an open source world where there are (a) developers who are working from a source code repository (CVS, Git, etc.) and creating a tar file or similar containing source code and putting that tar file up … Read more
Passing the following argument to configure script allowed me to build the 32bit library on 64bit Linux ./configure –build=i686-pc-linux-gnu CFLAGS=-m32 CXXFLAGS=-m32 LDFLAGS=-m32
Typically the configure script when run will: Check some details about the machine on which the software is going to be installed. This script checks for lots of dependencies on your system. For the particular software to work properly, it may be requiring a lot of things to be existing on your machine already. If … Read more
./configure –help That will show you all options for that particular configure script.
This flag enables Profile guided optimization (PGO) and Link Time Optimization (LTO). Both are expensive optimizations that slow down the build process but yield a significant speed boost (around 10-20% from what I remember reading). The discussion of what these exactly do is beyond my knowledge and probably too broad for a single question. Either … Read more
To create the standard “configure” script you need GNU autoconf. You may need GNU automake and libtool too. There are tons of documentation and howtos. Google for something like “autoconf automake howto”. The good documentation is in the official manual pages: Autoconf: http://www.gnu.org/software/autoconf/ Automake: http://www.gnu.org/software/automake/automake.html Libtool: http://www.gnu.org/software/libtool/libtool.html Autoconf will create your configure script starting from … Read more
You want a config.site file. Try: $ mkdir -p ~/local/share $ cat << EOF > ~/local/share/config.site CPPFLAGS=-I$HOME/local/include LDFLAGS=-L$HOME/local/lib … EOF Whenever you invoke an autoconf generated configure script with –prefix=$HOME/local, the config.site will be read and all the assignments will be made for you. CPPFLAGS and LDFLAGS should be all you need, but you can … Read more
Because each step does different things Prepare(setup) environment for building ./configure This script has lots of options that you should change. Like –prefix or –with-dir=/foo. That means every system has a different configuration. Also ./configure checks for missing libraries that should be installed. Anything wrong here causes not to build your application. That’s why distros … Read more