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[CMake] Implement generation of Z3Config.cmake and Z3Target.cmake

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file for the build and install tree.

These files allow users of CMake to use Z3 via a CMake config package.
Clients can do `find_package(Z3 CONFIG)` to get use the package from
their projects.

When generating the files for the install tree we try to generate
the files so that they are relocatable so that it shouldn't matter
if the installed files aren't in the CMAKE_INSTALL_PREFIX when
a user consumes them. As long as the relative locations of the files
aren't changed things should still work.

A new CMake cache variable `CMAKE_INSTALL_Z3_CMAKE_PACKAGE_DIR` has been
added so that the install location of the Z3 CMake package files can be
controlled.

This addresses #915 .
This commit is contained in:
Dan Liew 2017-03-03 19:39:53 +00:00
parent e2933350b2
commit 73614abf37
4 changed files with 110 additions and 0 deletions
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README-CMake.md
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@ -267,6 +267,7 @@ The following useful options can be passed to CMake whilst configuring.
* ``CMAKE_INSTALL_PREFIX`` - STRING. The install prefix to use (e.g. ``/usr/local/``).
* ``CMAKE_INSTALL_PKGCONFIGDIR`` - STRING. The path to install pkgconfig files.
* ``CMAKE_INSTALL_PYTHON_PKG_DIR`` - STRING. The path to install the z3 python bindings. This can be relative (to ``CMAKE_INSTALL_PREFIX``) or absolute.
* ``CMAKE_INSTALL_Z3_CMAKE_PACKAGE_DIR`` - STRING. The path to install CMake package files (e.g. ``/usr/lib/cmake/z3``).
* ``ENABLE_TRACING_FOR_NON_DEBUG`` - BOOL. If set to ``TRUE`` enable tracing in non-debug builds, if set to ``FALSE`` disable tracing in non-debug builds. Note in debug builds tracing is always enabled.
* ``BUILD_LIBZ3_SHARED`` - BOOL. If set to ``TRUE`` build libz3 as a shared library otherwise build as a static library.
* ``ENABLE_EXAMPLE_TARGETS`` - BOOL. If set to ``TRUE`` add the build targets for building the API examples.