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Allow disabling adding the install prefix to the prefix search path.

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In certain scenarios, it is preferable to keep a 'dirty' install prefix
than to clear it, and to expect that content will not be found there.
Add a CMAKE_FIND_NO_INSTALL_PREFIX variable that can be set to disable
searching the install prefix.
This commit is contained in:
Stephen Kelly
2013-10-29 10:40:09 +01:00
parent 047c1ec457
commit fe057ab3cd
14 changed files with 78 additions and 9 deletions
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13
Help/variable/CMAKE_FIND_NO_INSTALL_PREFIX.rst Normal file
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CMAKE_FIND_NO_INSTALL_PREFIX
----------------------------
Ignore the :variable:`CMAKE_INSTALL_PREFIX` when searching for assets.
CMake adds the :variable:`CMAKE_INSTALL_PREFIX` to the
:variable:`CMAKE_SYSTEM_PREFIX_PATH` by default. This variable may be set
on the command line to control that behavior.
Set :variable:`CMAKE_FIND_NO_INSTALL_PREFIX` to TRUE to tell find_package not
to search in the :variable:`CMAKE_INSTALL_PREFIX` by default. Note that the
prefix may still be searched for other reasons, such as being the same prefix
as the CMake installation, or for being a built-in system prefix.