![]() ![]() build/Makefile does is to change directories to the build directory and invoke cmake.īack to the all target, we invoke $(MAKE) -C build, where $(MAKE) is a Makefile variable automatically generated for make. We provide the argument -p to ensure that mkdir does not scream at us for trying to create a directory that may already exist. The directory build is where we will perform our out-of-source build. build/Makefile does is to create the build directory using $(MKDIR), which is a variable for mkdir -p. The default target all is called by typing make, and invokes the target. $(MAKECMDGOALS): $(MAKE) -C build $(MAKECMDGOALS) Ifeq ($(findstring distclean,$(MAKECMDGOALS)),) # -Īll: $(MAKE) -C ($(MKDIR) build > (cd build > /dev/null 2>&1 & cmake ($(MKDIR) build > (cd build > /dev/null 2>&1 & cmake. Then, I create a top-level Makefile, and include the following: #. You may need to remove CMakeCache.txt." ) Please make a new directory (called a build directory) and run CMake from there. Message( FATAL_ERROR "In-source builds not allowed. You can use something like: add_custom_target(clean-cmake-filesĬOMMAND $ ) One can start a fresh build byĭeleting the build tree or creating a separate build tree. Because CMake does not change the source tree, there is The source tree will prevent CMake from generating any files in the In-source builds, but we strongly encourage users to adopt the notion ![]() Necessary if the user performs an in-source build. (CMake does generate a "make clean" target to remove files generated Would give users the false impression that it would work as expected. CMake does not generate a "makeĭistclean" target because CMakeLists.txt files can run scripts andĪrbitrary commands CMake has no way of tracking exactly which filesĪre generated as part of running CMake. Target that cleans the build and also removes Makefiles and other Some build trees created with GNU autotools have a "make distclean" ![]()
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