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| author | Luca Ceresoli <luca@lucaceresoli.net> | 2016-07-01 17:53:29 +0200 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2016-07-05 12:19:15 +0200 |
| commit | fc832dd126cee6288e68b58ae71c587b3a20b3d5 (patch) | |
| tree | 3fed8cd9b341b74baaf29c2cdd707bf03fb2da59 | |
| parent | 6ab3383f76c4e9f7151c4fce103e5ff7d5b6eb98 (diff) | |
| download | buildroot-fc832dd126cee6288e68b58ae71c587b3a20b3d5.tar.gz buildroot-fc832dd126cee6288e68b58ae71c587b3a20b3d5.zip | |
cmake: add documentation about how it is built
Commit 7b17bafc5d7948aff3059e058ada80ad1fc50500 by Davide Viti has a
detailed explanation of some unusual techniques used for building
host-cmake and (target-)cmake. This is useful information for whoever
starts hacking on it, so copy it in the makefile, where it will be
easily noticed.
Also remove the sentence about host-cmake having a runtime dependency
on host-pkgconfig (not true anymore: it's the specific cmake-packages
that depend on it) and fix typos.
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Cc: Samuel Martin <s.martin49@gmail.com>
Cc: Davide Viti <zinosat@tiscali.it>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
| -rw-r--r-- | package/cmake/cmake.mk | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/package/cmake/cmake.mk b/package/cmake/cmake.mk index 95c73c036b..7a80c1bfef 100644 --- a/package/cmake/cmake.mk +++ b/package/cmake/cmake.mk @@ -10,6 +10,18 @@ CMAKE_SITE = https://cmake.org/files/v$(CMAKE_VERSION_MAJOR) CMAKE_LICENSE = BSD-3c CMAKE_LICENSE_FILES = Copyright.txt +# CMake is a particular package: +# * CMake can be built using the generic infrastructure or the cmake one. +# Since Buildroot has no requirement regarding the host system cmake +# program presence, it uses the generic infrastructure to build the +# host-cmake package, then the (target-)cmake package can be built +# using the cmake infrastructure; +# * CMake bundles its dependencies within its sources. This is the +# reason why the host-cmake package has no dependencies:, whereas +# the (target-)cmake package has a lot of dependencies, using only +# the system-wide libraries instead of rebuilding and statically +# linking with the ones bundled into the CMake sources. + CMAKE_DEPENDENCIES = zlib jsoncpp libcurl libarchive expat bzip2 xz CMAKE_CONF_OPTS = \ |
