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This readme explains the most common parameters to CMake needed for
building tmw.
Basic syntax
------------
cmake [options] <source directory>
If you don't need any special options just change to the directory where
you extracted the sources and do `cmake . && make'
The syntax for setting variables to control CMakes behaviour is
-D <variable>=<value>
How do I...
-----------
- Use a custom install prefix (like --prefix on autoconf)?
CMAKE_INSTALL_PREFIX=/path/to/prefix
- Create a debug build?
CMAKE_BUILD_TYPE=Debug .
- Add additional package search directories?
CMAKE_PREFIX_PATH=/prefix/path
- Add additional include search directories?
CMAKE_INCLUDE_PATH=/include/path
For example, to build tmw to install in /opt/tmw, with libraries in
/build/tmw/lib, and SDL-headers in /build/tmw/include/SDL you'd use
the following command:
cmake -D CMAKE_PREFIX_PATH=/build/tmw \
-D CMAKE_INCLUDE_PATH=/build/tmw/include/SDL \
-D CMAKE_INSTALL_PREFIX=/opt/tmw .
Crosscompiling using CMake
--------------------------
The following example assumes you're doing a Windows-build from within a
UNIX environement, using mingw32 installed in /build/mingw32.
- create a toolchain-file describing your environement:
$ cat /build/toolchain.cmake
# the name of the target operating system
SET(CMAKE_SYSTEM_NAME Windows)
# which compilers to use for C and C++
SET(CMAKE_C_COMPILER i386-mingw32-gcc)
SET(CMAKE_CXX_COMPILER i386-mingw32-g++)
# here is the target environment located
SET(CMAKE_FIND_ROOT_PATH /build/mingw32 /build/tmw-libs )
# adjust the default behaviour of the FIND_XXX() commands:
# search headers and libraries in the target environment, search
# programs in the host environment
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
- set your PATH to include the bin-directory of your mingw32-installation:
$ export PATH=/build/mingw32/bin:$PATH
- configure the source tree for the build, using the toolchain file:
$ cmake -DCMAKE_TOOLCHAIN_FILE=/build/toolchain.cmake .
- use make for building the application
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