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authorBrad King <brad.king@kitware.com>2016-11-21 16:52:32 (GMT)
committerBrad King <brad.king@kitware.com>2016-11-21 16:52:32 (GMT)
commit47dd761379cfc55b6630835e2d30d1cd07b15f9a (patch)
treec9daa2fcb60fc54881dcd501d89d46db1f7a7675
parent37966a57992a8a2cc59fd663a4dea985a0be248c (diff)
parentdf9fea7f495cc0cc495782abfe4a7b0a0a3122ec (diff)
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Merge branch 'doc-CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT' into release
-rw-r--r--Help/manual/cmake-variables.7.rst1
-rw-r--r--Help/variable/CMAKE_INSTALL_PREFIX.rst2
-rw-r--r--Help/variable/CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT.rst14
3 files changed, 17 insertions, 0 deletions
diff --git a/Help/manual/cmake-variables.7.rst b/Help/manual/cmake-variables.7.rst
index ab69303..31c0a84 100644
--- a/Help/manual/cmake-variables.7.rst
+++ b/Help/manual/cmake-variables.7.rst
@@ -148,6 +148,7 @@ Variables that Change Behavior
/variable/CMAKE_INSTALL_DEFAULT_COMPONENT_NAME
/variable/CMAKE_INSTALL_MESSAGE
/variable/CMAKE_INSTALL_PREFIX
+ /variable/CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT
/variable/CMAKE_LIBRARY_PATH
/variable/CMAKE_MFC_FLAG
/variable/CMAKE_MODULE_PATH
diff --git a/Help/variable/CMAKE_INSTALL_PREFIX.rst b/Help/variable/CMAKE_INSTALL_PREFIX.rst
index 86f1944..7bd87d6 100644
--- a/Help/variable/CMAKE_INSTALL_PREFIX.rst
+++ b/Help/variable/CMAKE_INSTALL_PREFIX.rst
@@ -6,6 +6,8 @@ Install directory used by :command:`install`.
If ``make install`` is invoked or ``INSTALL`` is built, this directory is
prepended onto all install directories. This variable defaults to
``/usr/local`` on UNIX and ``c:/Program Files/${PROJECT_NAME}`` on Windows.
+See :variable:`CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT` for how a
+project might choose its own default.
On UNIX one can use the ``DESTDIR`` mechanism in order to relocate the
whole installation. ``DESTDIR`` means DESTination DIRectory. It is
diff --git a/Help/variable/CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT.rst b/Help/variable/CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT.rst
new file mode 100644
index 0000000..2a5842d
--- /dev/null
+++ b/Help/variable/CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT.rst
@@ -0,0 +1,14 @@
+CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT
+-------------------------------------------
+
+CMake sets this variable to a ``TRUE`` value when the
+:variable:`CMAKE_INSTALL_PREFIX` has just been initialized to
+its default value, typically on the first run of CMake within
+a new build tree. This can be used by project code to change
+the default without overriding a user-provided value:
+
+.. code-block:: cmake
+
+ if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+ set(CMAKE_INSTALL_PREFIX "/my/default" CACHE PATH "..." FORCE)
+ endif()