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Experimental cmake-based build support for APR on Microsoft Windows
Status
------
This build support is currently intended only for Microsoft Windows.
This build support is experimental. Specifically,
* It does not support all features of APR.
* Some components may not be built correctly and/or in a manner
compatible with the previous Windows build support.
* Build interfaces, such as the mechanisms which are used to enable
optional functionality or specify prerequisites, may change from
release to release as feedback is received from users and bugs and
limitations are resolved.
Important: Refer to the "Known Bugs and Limitations" section for further
information.
It is beyond the scope of this document to document or explain
how to utilize the various cmake features, such as different
build backends or provisions for finding support libraries.
Please refer to the cmake documentation for additional information
that applies to building any project with cmake.
Prerequisites
-------------
The following tools must be in PATH:
* cmake, version 2.8 or later
* If using a command-line compiler: compiler and linker and related tools
(Refer to the cmake documentation for more information.)
How to build
------------
1. cd to a clean directory for building (i.e., don't build in your
source tree)
2. Some cmake backends may want your compile tools in PATH. (Hint: "Visual
Studio Command Prompt")
3. cmake -G "some backend, like 'NMake Makefiles'"
-DCMAKE_INSTALL_PREFIX=d:/path/to/aprinst
-DAPR-specific-flags
d:/path/to/aprsource
Alternately, use cmake-gui and update settings in the GUI.
APR feature flags:
APR_INSTALL_PRIVATE_H Install extra .h files which are required when
building httpd and Subversion but which aren't
intended for use by applications.
Default: OFF
APR_HAVE_IPV6 Enable IPv6 support
Default: ON
APR_BUILD_TESTAPR Build APR test suite
Default: OFF
MIN_WINDOWS_VER Minimum Windows version supported by this build
(This controls the setting of _WIN32_WINNT.)
"Vista" or "Windows7" or a numeric value like
"0x0601"
Default: "Vista"
For desktop/server equivalence or other values,
refer to
http://msdn.microsoft.com/en-us/library/windows/
desktop/aa383745(v=vs.85).aspx
INSTALL_PDB Install .pdb files if generated.
Default: ON
CMAKE_C_FLAGS_RELEASE, _DEBUG, _RELWITHDEBINFO, _MINSIZEREL
CMAKE_BUILD_TYPE
For NMake Makefiles the choices are at least DEBUG, RELEASE,
RELWITHDEBINFO, and MINSIZEREL
Other backends make have other selections.
4. build using chosen backend (e.g., "nmake install")
Known Bugs and Limitations
--------------------------
* If include/apr.h or other generated files have been created in the source
directory by another build system, they will be used unexpectedly and
cause the build to fail.
* Options should be provided for remaining features:
+ APR_POOL_DEBUG
* No test program build to use libapr-1.dll is created.
* No script or other mechanism is provided to run the test suite.
* APR-CHANGES.txt, APR-LICENSE.txt, and APR-NOTICE.txt are not installed,
though perhaps that is a job for a higher-level script.
* test/internal/testucs is not built.
Generally:
* Many APR features have not been tested with this build.
* Developers need to examine the existing Windows build in great detail and see
what is missing from the cmake-based build, whether a feature or some build
nuance.
* Any feedback you can provide on your experiences with this build will be
helpful.
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