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How To Compile with CMake
Building with CMake
==========================
This document describes how to compile, build and install curl and libcurl
from source code using the CMake build tool. To build with CMake, you will
of course have to first install CMake. The minimum required version of
CMake is specifed in the file CMakeLists.txt found in the top of the curl
source tree. Once the correct version of CMake is installed you can follow
the instructions below for the platform you are building on.
CMake builds can be configured either from the command line, or from one
of CMake's GUI's.
Important notice
==================
If you got your curl sources from a distribution tarball, make sure to
delete the generic 'include/curl/curlbuild.h' file that comes with it:
rm -f curl/include/curl/curlbuild.h
The purpose of this file is to provide reasonable definitions for systems
where autoconfiguration is not available. CMake will create its own
version of this file in its build directory. If the "generic" version
is not deleted, weird build errors may occur on some systems.
Command Line CMake
==================
A command line build of Curl is similar to the autotools build of Curl. It
consists of the following steps after you have unpacked the source.
# 1st create an out of source build tree parallel to the curl source
# tree and change into that directory
mkdir curl-build
cd curl-build
# now run CMake from the build tree, giving it the path to the top of
# the Curl source tree. CMake will pick a compiler for you. If you
# want to specifiy the compile, you can set the CC environment
# variable prior to running CMake.
cmake ../curl
make
# currently make test is not implemented
#make test
# Install to default location:
make install
ccmake
=========
CMake comes with a curses based interface called ccmake. To run ccmake on
a curl use the instructions for the command line cmake, but substitue
ccmake ../curl for cmake ../curl. This will bring up a curses interface
with instructions on the bottom of the screen. You can press the "c" key
to configure the project, and the "g" key to generate the project. After
the project is generated, you can run make.
cmake-gui
=========
CMake also comes with a Qt based GUI called cmake-gui. To configure with
cmake-gui, you run cmake-gui and follow these steps:
1. Fill in the "Where is the source code" combo box with the path to
the curl source tree.
2. Fill in the "Where to build the binaries" combo box with the path
to the directory for your build tree, ideally this should not be the
same as the source tree, but a parallel diretory called curl-build or
something similar.
3. Once the source and binary directories are specified, press the
"Configure" button.
4. Select the native build tool that you want to use.
5. At this point you can change any of the options presented in the
GUI. Once you have selected all the options you want, click the
"Generate" button.
6. Run the native build tool that you used CMake to genratate.
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