Configure CMakeLists not to install libs

If the built libs are static and not needed by other packages,
there's no need to install them or make them shared.
BUILD_SHARED_LIBS and INSTALL_LIBS options are provided to control
this behavior.

This patch comes from the Debian distribution with some modifications.

CMakeLists.txt

@@ -18,7 +18,9 @@ set(SCRAM_VERSION_MICRO 4)  # Bug fixes.
 
 ####################### Begin Options ###################
 
-set(BUILD_SHARED_LIBS TRUE)  # Change this for static building.
+option(BUILD_SHARED_LIBS OFF)
+
+option(INSTALL_LIBS "Install the generated libraries" ON)
 
 # Linking of external libraries, such as BOOST.
 option(WITH_STATIC_LIBS "Try to link against static libraries" OFF)
@@ -118,7 +120,9 @@ set(CMAKE_SKIP_BUILD_RPATH FALSE)
 # (but later on when installing).
 set(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
 
-set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
+if(INSTALL_LIBS)
+  set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
+endif()
 
 # Add the automatically determined parts of the RPATH,
 # which point to directories outside the build tree

install.py

@@ -43,6 +43,7 @@ def generate_make_files(args):
         sys.exit("CMake could not be found, "
                  "please install CMake before developing SCRAM.")
     cmake_cmd = ["cmake", os.path.abspath(root_dir)]
+    cmake_cmd += ["-DBUILD_SHARED_LIBS=ON"]
     if args.prefix:
         cmake_cmd += ["-DCMAKE_INSTALL_PREFIX=" + absexpanduser(args.prefix)]
 

src/CMakeLists.txt

@@ -59,30 +59,31 @@ set(SCRAM_CORE_SRC
   )
 add_library(scramcore ${SCRAM_CORE_SRC})
 
-set_target_properties(scramcore
-  PROPERTIES
-  INSTALL_NAME_DIR "${CMAKE_INSTALL_PREFIX}/lib"
-  INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib"
-  LINK_FLAGS "${LIB_LINK_FLAGS}"
-  )
-
-target_link_libraries(scramcore ${LIBS})
-
-if(WIN32)
-  install(
-    TARGETS scramcore
-    RUNTIME DESTINATION bin COMPONENT scram
-    LIBRARY DESTINATION lib COMPONENT scram
-    ARCHIVE DESTINATION lib COMPONENT scram
-    )
-else()
-  install(
-    TARGETS scramcore
-    DESTINATION lib
-    COMPONENT scram
+if(INSTALL_LIBS)
+  set_target_properties(scramcore
+    PROPERTIES
+    INSTALL_NAME_DIR "${CMAKE_INSTALL_PREFIX}/lib"
+    INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib"
+    LINK_FLAGS "${LIB_LINK_FLAGS}"
     )
+  if(WIN32)
+    install(
+      TARGETS scramcore
+      RUNTIME DESTINATION bin COMPONENT scram
+      LIBRARY DESTINATION lib COMPONENT scram
+      ARCHIVE DESTINATION lib COMPONENT scram
+      )
+  else()
+    install(
+      TARGETS scramcore
+      DESTINATION lib
+      COMPONENT scram
+      )
+  endif()
 endif()
 
+target_link_libraries(scramcore ${LIBS})
+
 add_executable(scram scram.cc)
 target_link_libraries(scram scramcore ${Boost_LIBRARIES})