5 \___|\___/|_| \_\_____|
7 How To Compile with CMake
10 ==========================
11 This document describes how to compile, build and install curl and libcurl
12 from source code using the CMake build tool. To build with CMake, you will
13 of course have to first install CMake. The minimum required version of
14 CMake is specified in the file CMakeLists.txt found in the top of the curl
15 source tree. Once the correct version of CMake is installed you can follow
16 the instructions below for the platform you are building on.
18 CMake builds can be configured either from the command line, or from one
21 Current flaws in the curl CMake build
22 =====================================
24 Missing features in the cmake build:
26 - Builds libcurl without large file support
27 - Can't select which SSL library to build with, only OpenSSL
28 - Doesn't build with SCP and SFTP support (libssh2)
29 - Doesn't allow different resolver backends (no c-ares build support)
30 - No RTMP support built
31 - Doesn't allow build curl and libcurl debug enabled
32 - Doesn't allow a custom CA bundle path
33 - Doesn't allow you to disable specific protocols from the build
34 - Doesn't find or use krb4 or GSS
35 - Rebuilds test files too eagerly, but still can't run the tests
40 If you got your curl sources from a distribution tarball, make sure to
41 delete the generic 'include/curl/curlbuild.h' file that comes with it:
42 rm -f curl/include/curl/curlbuild.h
44 The purpose of this file is to provide reasonable definitions for systems
45 where autoconfiguration is not available. CMake will create its own
46 version of this file in its build directory. If the "generic" version
47 is not deleted, weird build errors may occur on some systems.
51 A CMake build of curl is similar to the autotools build of curl. It
52 consists of the following steps after you have unpacked the source.
54 1. Create an out of source build tree parallel to the curl source
55 tree and change into that directory
60 2. Run CMake from the build tree, giving it the path to the top of
61 the curl source tree. CMake will pick a compiler for you. If you
62 want to specify the compile, you can set the CC environment
63 variable prior to running CMake.
68 3. Install to default location:
72 (The test suite does not work with the cmake build)
76 CMake comes with a curses based interface called ccmake. To run ccmake on
77 a curl use the instructions for the command line cmake, but substitute
78 ccmake ../curl for cmake ../curl. This will bring up a curses interface
79 with instructions on the bottom of the screen. You can press the "c" key
80 to configure the project, and the "g" key to generate the project. After
81 the project is generated, you can run make.
85 CMake also comes with a Qt based GUI called cmake-gui. To configure with
86 cmake-gui, you run cmake-gui and follow these steps:
87 1. Fill in the "Where is the source code" combo box with the path to
89 2. Fill in the "Where to build the binaries" combo box with the path
90 to the directory for your build tree, ideally this should not be the
91 same as the source tree, but a parallel directory called curl-build or
93 3. Once the source and binary directories are specified, press the
95 4. Select the native build tool that you want to use.
96 5. At this point you can change any of the options presented in the
97 GUI. Once you have selected all the options you want, click the
99 6. Run the native build tool that you used CMake to generate.