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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
cmake version 3.1.3 or later is required to work with current OpenSSL
releases. (OpenSSL is an optional prerequisite of APR.)
* If using a command-line compiler: compiler and linker and related tools
(Refer to the cmake documentation for more information.)
The following support libraries are mandatory:
* Either expat or libxml2
Additional support libraries allow optional features of APR to be enabled:
* OpenSSL
* many others potentially, though the build support isn't currently
implemented
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. set CMAKE_LIBRARY_PATH=d:\path\to\prereq1\lib;d:\path\to\prereq2\lib;...
4. set CMAKE_INCLUDE_PATH=d:\path\to\prereq1\include;d:\path\to\prereq2\include;...
5. 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:
Exactly one of APU_USE_EXPAT and APU_USE_LIBXML2 must be specified.
APU_USE_EXPAT Use Expat as the underlying XML implementation
Default: ON
APU_USE_LIBXML2 Use libxml2 as the underlying XML
implementation
Default: OFF
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
APU_HAVE_CRYPTO Build crypt support (only the OpenSSL
implementation is currently supported)
Default: OFF
APU_HAVE_ODBC Build ODBC DBD driver
Default: ON
APR_HAVE_IPV6 Enable IPv6 support
Default: ON
APR_BUILD_TESTAPR Build APR test suite
Default: OFF
TEST_STATIC_LIBS Build the test suite to test the APR static
library instead of the APR dynamic library.
Default: OFF
In order to build the test suite against both
static and dynamic libraries, separate builds
will be required, one with TEST_STATIC_LIBS
set to ON.
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
LIBXML2_ICONV_INCLUDE_DIR, LIBXML2_ICONV_LIBRARIES
If using libxml2 for the XML implementation and the build of libxml2
requires iconv, set these variables to allow iconv includes
and libraries to be found.
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.
6. build using chosen backend (e.g., "nmake install")
Tested generators
-----------------
1. NMake Makefiles
This has been tested successfully with the following:
* Visual Studio 2008 64-bit (requires KB948127 hot fix)
* Visual Studio 2012 64-bit
2. Visual Studio 11 (Visual Studio 2012 project files)
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, along with finding any
necessary libraries
+ APR_POOL_DEBUG
+ DBM:
. APU_HAVE_GDBM
. APU_HAVE_NDBM
. APU_HAVE_DB
+ DBD:
. APU_HAVE_PGSQL
. APU_HAVE_MYSQL
. APU_HAVE_SQLITE3
. APU_HAVE_SQLITE2
. APU_HAVE_ORACLE
+ CRYPTO:
. APU_HAVE_NSS
+ APU_HAVE_ICONV
* Static builds of APR modules are not supported.
* XML implementation (i.e., Expat or libxml2) could support static XML impl
with apr-2.lib.
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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