llvm-config-2: Use USEDLIBS directly instead of LINK_COMPONENTS, which will

[oota-llvm.git] / tools / llvm-config-2 / CMakeLists.txt

diff --git a/tools/llvm-config-2/CMakeLists.txt b/tools/llvm-config-2/CMakeLists.txt
index a1e083df08a2be940b38bea386a7eeda86fa1c68..3c7169d382ef75b8bc54712f5fe00eeebee147cf 100644 (file)
--- a/tools/llvm-config-2/CMakeLists.txt
+++ b/tools/llvm-config-2/CMakeLists.txt
@@ -1,5 +1,41 @@
 set(LLVM_LINK_COMPONENTS support)
 
+# We need to generate the BuildVariables.inc file containing values which are
+# only defined when under certain build modes. Unfortunately, that precludes
+# doing this inside CMake so we have to shell out to sed. For now, that means we
+# can't expect to build llvm-config on Window.s
+set(BUILDVARIABLES_SRCPATH ${CMAKE_CURRENT_SOURCE_DIR}/BuildVariables.inc.in)
+set(BUILDVARIABLES_OBJPATH ${CMAKE_CURRENT_BINARY_DIR}/BuildVariables.inc)
+set(SEDSCRIPT_OBJPATH ${CMAKE_CURRENT_BINARY_DIR}/BuildVariables.configure.sed)
+
+# Compute the substitution values for various items.
+get_system_libs(LLVM_SYSTEM_LIBS_LIST)
+foreach(l ${LLVM_SYSTEM_LIBS_LIST})
+  set(SYSTEM_LIBS ${SYSTEM_LIBS} "-l${l}")
+endforeach()
+set(C_FLGS "${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
+set(CXX_FLGS "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
+set(CPP_FLGS "${CMAKE_CPP_FLAGS} ${CMAKE_CPP_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
+
+add_custom_command(OUTPUT ${BUILDVARIABLES_OBJPATH}
+  COMMAND echo s!@LLVM_SRC_ROOT@!${LLVM_MAIN_SRC_DIR}! > ${SEDSCRIPT_OBJPATH}
+  COMMAND echo s!@LLVM_OBJ_ROOT@!${LLVM_BINARY_DIR}! >> ${SEDSCRIPT_OBJPATH}
+  COMMAND echo s!@LLVM_CPPFLAGS@!${CPP_FLGS}! >> ${SEDSCRIPT_OBJPATH}
+  COMMAND echo s!@LLVM_CFLAGS@!${C_FLGS}! >> ${SEDSCRIPT_OBJPATH}
+  COMMAND echo s!@LLVM_CXXFLAGS@!${CXX_FLGS}! >> ${SEDSCRIPT_OBJPATH}
+  # TODO: Use general flags for linking! not just for shared libs:
+  COMMAND echo s!@LLVM_LDFLAGS@!${CMAKE_SHARED_LINKER_FLAGS}! >> ${SEDSCRIPT_OBJPATH}
+  COMMAND echo s!@LLVM_BUILDMODE@!${CMAKE_BUILD_TYPE}! >> ${SEDSCRIPT_OBJPATH}
+  COMMAND echo s!@LLVM_SYSTEM_LIBS@!${SYSTEM_LIBS}! >> ${SEDSCRIPT_OBJPATH}
+  COMMAND sed -f ${SEDSCRIPT_OBJPATH} < ${BUILDVARIABLES_SRCPATH} > ${BUILDVARIABLES_OBJPATH}
+  VERBATIM
+  COMMENT "Building BuildVariables.inc include."
+  )
+
+# Add the llvm-config tool.
 add_llvm_tool(llvm-config-2
   llvm-config.cpp
   )
+
+# Add the dependency on the generation step.
+add_file_dependencies(${CMAKE_CURRENT_SOURCE_DIR}/llvm-config.cpp ${BUILDVARIABLES_OBJPATH})