CMake with "standard" directory layout (Linux) - cmake

Question

Let's say I have a simple hello project with the pseudo-standard directory layout
helloworld/
src/
main.c
say.c
say-helper.c
include/
say.h
say-helper.h
build/
and after running
cd ~/helloworld/build
cmake ..
make
I would expect the following
helloworld/
build/lib/
libsay.a
libsay.so
libsay.so.1.0.0
tmp/obj/
main.o
say.o
build/bin/
hello
and after make install I would expect
/usr/local/lib/
libsay.a
libsay.so
libsay.so.1.0.0
/usr/local/bin/
hello
What would the CMakeLists.txt look like for this setup?
I've been looking around for examples, but the only one I've found that shows how to add a library and an executable didn't work.

Answer 1

Basic commands to describe the project:
INCLUDE_DIRECTORIES(include)
ADD_LIBRARY(say src/say.c src/say-helper.c)
ADD_EXECUTABLE(hello src/main.c)
TARGET_LINK_LIBRARIES(hello say)
This is for placing the libs and the executable in the build directory, put that in your CMakeLists.txt:
SET (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin)
SET (CMAKE_LIBRARY_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/lib)
SET (CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/lib)
For install you specify
install(TARGETS say hello
RUNTIME DESTINATION bin
LIBRARY DESTINATION lib
ARCHIVE DESTINATION lib)
in your CMakeLists.txt and set CMAKE_INSTALL_PREFIX to /usr/local in your configuration.
I'm not sure if you can build static and dynamic libraries simultaneously with the same name, though. And I don't know how to tell CMake to put the obj files in some specific location.