From 5a8f155e002274e03e51b51fbe86ed0c0e7f890a Mon Sep 17 00:00:00 2001
From: Emmanuel Christophe <emmanuel.christophe@orfeo-toolbox.org>
Date: Mon, 18 Oct 2010 18:40:30 +0800
Subject: [PATCH] ENH: prevent in-source build (following discussion on the ITK
dev list)
---
CMake/PreventInSourceBuilds.cmake | 43 +++++++++++++++++++++++++++++++
CMakeLists.txt | 5 ++++
2 files changed, 48 insertions(+)
create mode 100644 CMake/PreventInSourceBuilds.cmake
diff --git a/CMake/PreventInSourceBuilds.cmake b/CMake/PreventInSourceBuilds.cmake
new file mode 100644
index 0000000000..60f035f686
--- /dev/null
+++ b/CMake/PreventInSourceBuilds.cmake
@@ -0,0 +1,43 @@
+#
+# This function will prevent in-source builds
+function(AssureOutOfSourceBuilds)
+ # make sure the user doesn't play dirty with symlinks
+ get_filename_component(srcdir "${CMAKE_SOURCE_DIR}" REALPATH)
+ get_filename_component(bindir "${CMAKE_BINARY_DIR}" REALPATH)
+
+ # disallow in-source builds
+ if("${srcdir}" STREQUAL "${bindir}")
+ message("######################################################")
+ message("# OTB should not be configured & built in the OTB source directory")
+ message("# You must run cmake in a build directory.")
+ message("# For example:")
+ message("# mkdir OTB-Sandbox ; cd OTB-Sandbox")
+ message("# hg clone http://hg.orfeo-toolbox.org/OTB # or download & unpack the source tarball")
+ message("# mkdir OTB-Binary ")
+ message("# this will create the following directory structure ")
+ message("# ")
+ message("# OTB-Sandbox")
+ message("# +--OTB ")
+ message("# +--OTB-Binary ")
+ message("# ")
+ message("# Then you can proceed to configure and build ")
+ message("# by using the following commands ")
+ message("# ")
+ message("# cd OTB-Binary")
+ message("# ccmake ../OTB")
+ message("# make ")
+ message("# ")
+ message("# NOTE: Given that you already tried to make an in-source build")
+ message("# CMake have already created several files & directories")
+ message("# in your source tree. run 'hg status' to find them and")
+ message("# remove them by doing:")
+ message("# ")
+ message("# cd OTB-Sandbox/OTB")
+ message("# hg purge ")
+ message("# ")
+ message("######################################################")
+ message(FATAL_ERROR "Quitting configuration")
+ endif()
+endfunction()
+
+AssureOutOfSourceBuilds()
diff --git a/CMakeLists.txt b/CMakeLists.txt
index c5da571bc7..41e5dd37fe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,6 +6,11 @@ IF(COMMAND CMAKE_POLICY)
CMAKE_POLICY(SET CMP0003 NEW)
ENDIF(COMMAND CMAKE_POLICY)
+#-----------------------------------------------------------------------------
+# Sanity check -- prevent in-source builds
+#
+INCLUDE(${CMAKE_CURRENT_SOURCE_DIR}/CMake/PreventInSourceBuilds.cmake)
+
PROJECT(OTB)
# Path to additional CMake modules
--
GitLab