On Sep 15, 2009, at 2:15 PM, Tyler Roscoe wrote:
On Tue, Sep 15, 2009 at 02:08:44PM -0600, James C. Sutherland wrote:
So assuming that I wanted my CMakeLists.txt file to modify the
default
install location, but allow the user to change this, wouldn't I do
something like:
set( CMAKE_INSTALL_PREFIX
${CMAKE_CURRENT_BINARY_DIR}
CACHE PATH "installation path"
)
This doesn't work - I assume that this is because
CMAKE_INSTALL_PREFIX
is a special (internally defined) variable? When I run ccmake and
configure, the value remains as /usr/local.
This will work when generating a new cache. If you have a pre-existing
cache, CMake won't override the value in there (otherwise how could a
user ever provide her own values for cache variables).
After wiping my cache (and the entire build directory) clean, I ran
ccmake (configure) and the CMAKE_INSTALL_PREFIX was set to /usr/
local. The only way I can get it to modify the CMAKE_INSTALL_PREFIX
by default (i.e. through the CMakeLists.txt file) is by removing the
CACHE PATH portion. But then it isn't cached (obviously).
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