add make install target

Destination can be set through the CMAKE_INSTALL_PREFIX variable when
running cmake (for example, `-DCMAKE_INSTALL_PREFIX=/usr/local`).

Files are installed as described below:
  - `build/src/bpftrace` -> `${CMAKE_INSTALL_PREFIX}/sbin`
  - `tools/*` -> `${CMAKE_INSTALL_PREFIX}/share/bpftrace/tools`
  - `man/*` -> `${CMAKE_INSTALL_PREFIX}/man`

CMakeLists.txt

@@ -72,3 +72,5 @@ add_subdirectory(src/ast)
 add_subdirectory(src)
 add_subdirectory(tests)
 add_subdirectory(resources)
+add_subdirectory(tools)
+add_subdirectory(man)

man/CMakeLists.txt

+add_subdirectory(man8)

man/man8/CMakeLists.txt

+find_program(GZIP gzip)
+file(GLOB FILES *.8)
+set(GZFILES "")
+foreach(FIL ${FILES})
+  get_filename_component(NAME ${FIL} NAME)
+  add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${NAME}.gz
+    COMMAND ${GZIP} -c ${FIL} > ${CMAKE_CURRENT_BINARY_DIR}/${NAME}.gz
+    DEPENDS ${FIL})
+  list(APPEND GZFILES "${CMAKE_CURRENT_BINARY_DIR}/${NAME}.gz")
+endforeach()
+add_custom_target(man ALL DEPENDS ${GZFILES})
+install(FILES ${GZFILES} DESTINATION man/man8)

src/CMakeLists.txt

@@ -21,3 +21,5 @@ target_link_libraries(bpftrace ${binary_dir}/src/cc/libbpf.a)
 target_link_libraries(bpftrace ${binary_dir}/src/cc/libbcc-loader-static.a)
 target_link_libraries(bpftrace ${binary_dir}/src/cc/libbcc.a)
 target_link_libraries(bpftrace ${LIBELF_LIBRARIES})
+
+install(TARGETS bpftrace DESTINATION bin)

tools/CMakeLists.txt

+file(GLOB BT_FILES *.bt)
+install(FILES ${BT_FILES} DESTINATION share/bpftrace/tools)