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ENH: Allow user project code to distinguish between an install prefix set on the command line and one set by CMake as a default. This is useful for changing the default prefix while still allowing the user to override it.

This commit is contained in:
Brad King 2006-10-16 13:58:17 -04:00
parent 3a0b94131d
commit e55ff93748
1 changed files with 8 additions and 0 deletions
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8
Modules/CMakeGenericSystem.cmake
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@ -41,6 +41,14 @@ IF(CMAKE_GENERATOR MATCHES "Makefiles")
MARK_AS_ADVANCED(CMAKE_COLOR_MAKEFILE)
ENDIF(CMAKE_GENERATOR MATCHES "Makefiles")
# Set a variable to indicate whether the value of CMAKE_INSTALL_PREFIX
# was initialized by the block below. This is useful for user
# projects to change the default prefix while still allowing the
# command line to override it.
IF(NOT DEFINED CMAKE_INSTALL_PREFIX)
SET(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT 1)
ENDIF(NOT DEFINED CMAKE_INSTALL_PREFIX)
# Choose a default install prefix for this platform.
IF(UNIX)
SET(CMAKE_INSTALL_PREFIX "/usr/local"