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llvm-config-2: Implement build system support for getting the variables we only
know at build time. llvm-svn: 143649
This commit is contained in:
Daniel Dunbar
parent
05c1ecf2c0
commit
6ed1f79da0
@ -17,9 +17,12 @@ if( NOT WIN32 OR MSYS OR CYGWIN )
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# must keep llvm-config as the first entry on the list of tools to
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# be built.
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add_subdirectory(llvm-config)
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# We currently require 'sed' to build llvm-config-2, so don't try to build it
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# on pure Win32.
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add_subdirectory(llvm-config-2)
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endif()
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add_subdirectory(llvm-config-2)
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add_subdirectory(opt)
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add_subdirectory(llvm-as)
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add_subdirectory(llvm-dis)
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26
tools/llvm-config-2/BuildVariables.inc.in
Normal file
26
tools/llvm-config-2/BuildVariables.inc.in
Normal file
@ -0,0 +1,26 @@
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//===-- BuildVariables.inc.in - llvm-config build variables -*- C++ -*-----===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is configured by the build system to define the variables
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// llvm-config wants to report to the user, but which can only be determined at
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// build time.
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//
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// The non .in variant of this file has been autogenerated by the LLVM build. Do
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// not edit!
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//
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//===----------------------------------------------------------------------===//
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#define LLVM_SRC_ROOT "@LLVM_SRC_ROOT@"
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#define LLVM_OBJ_ROOT "@LLVM_OBJ_ROOT@"
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#define LLVM_CPPFLAGS "@LLVM_CPPFLAGS@"
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#define LLVM_CFLAGS "@LLVM_CFLAGS@"
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#define LLVM_LDFLAGS "@LLVM_LDFLAGS@"
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#define LLVM_CXXFLAGS "@LLVM_CXXFLAGS@"
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#define LLVM_BUILDMODE "@LLVM_BUILDMODE@"
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#define LLVM_SYSTEM_LIBS "@LLVM_SYSTEM_LIBS@"
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@ -1,5 +1,41 @@
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set(LLVM_LINK_COMPONENTS support)
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# We need to generate the BuildVariables.inc file containing values which are
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# only defined when under certain build modes. Unfortunately, that precludes
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# doing this inside CMake so we have to shell out to sed. For now, that means we
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# can't expect to build llvm-config on Window.s
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set(BUILDVARIABLES_SRCPATH ${CMAKE_CURRENT_SOURCE_DIR}/BuildVariables.inc.in)
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set(BUILDVARIABLES_OBJPATH ${CMAKE_CURRENT_BINARY_DIR}/BuildVariables.inc)
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set(SEDSCRIPT_OBJPATH ${CMAKE_CURRENT_BINARY_DIR}/BuildVariables.configure.sed)
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# Compute the substitution values for various items.
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get_system_libs(LLVM_SYSTEM_LIBS_LIST)
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foreach(l ${LLVM_SYSTEM_LIBS_LIST})
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set(SYSTEM_LIBS ${SYSTEM_LIBS} "-l${l}")
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endforeach()
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set(C_FLGS "${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
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set(CXX_FLGS "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
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set(CPP_FLGS "${CMAKE_CPP_FLAGS} ${CMAKE_CPP_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
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add_custom_command(OUTPUT ${BUILDVARIABLES_OBJPATH}
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COMMAND echo s!@LLVM_SRC_ROOT@!${LLVM_MAIN_SRC_DIR}! > ${SEDSCRIPT_OBJPATH}
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COMMAND echo s!@LLVM_OBJ_ROOT@!${LLVM_BINARY_DIR}! >> ${SEDSCRIPT_OBJPATH}
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COMMAND echo s!@LLVM_CPPFLAGS@!${CPP_FLGS}! >> ${SEDSCRIPT_OBJPATH}
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COMMAND echo s!@LLVM_CFLAGS@!${C_FLGS}! >> ${SEDSCRIPT_OBJPATH}
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COMMAND echo s!@LLVM_CXXFLAGS@!${CXX_FLGS}! >> ${SEDSCRIPT_OBJPATH}
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# TODO: Use general flags for linking! not just for shared libs:
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COMMAND echo s!@LLVM_LDFLAGS@!${CMAKE_SHARED_LINKER_FLAGS}! >> ${SEDSCRIPT_OBJPATH}
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COMMAND echo s!@LLVM_BUILDMODE@!${CMAKE_BUILD_TYPE}! >> ${SEDSCRIPT_OBJPATH}
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COMMAND echo s!@LLVM_SYSTEM_LIBS@!${SYSTEM_LIBS}! >> ${SEDSCRIPT_OBJPATH}
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COMMAND sed -f ${SEDSCRIPT_OBJPATH} < ${BUILDVARIABLES_SRCPATH} > ${BUILDVARIABLES_OBJPATH}
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VERBATIM
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COMMENT "Building BuildVariables.inc include."
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)
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# Add the llvm-config tool.
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add_llvm_tool(llvm-config-2
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llvm-config.cpp
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)
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# Add the dependency on the generation step.
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add_file_dependencies(${CMAKE_CURRENT_SOURCE_DIR}/llvm-config.cpp ${BUILDVARIABLES_OBJPATH})
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@ -11,7 +11,47 @@ LEVEL := ../..
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TOOLNAME := llvm-config-2
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LINK_COMPONENTS := support
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# We generate sources in the build directory, make sure it is in the include
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# paths.
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INCLUDE_BUILD_DIR := 1
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# This tool has no plugins, optimize startup time.
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TOOL_NO_EXPORTS := 1
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# Note that we have to use lazy expansion here.
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BUILDVARIABLES_SRCPATH = $(PROJ_SRC_ROOT)/tools/$(TOOLNAME)/BuildVariables.inc.in
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BUILDVARIABLES_OBJPATH = $(ObjDir)/BuildVariables.inc
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BUILT_SOURCES = $(BUILDVARIABLES_OBJPATH)
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include $(LEVEL)/Makefile.common
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# Combine preprocessor flags (except for -I) and CXX flags.
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SUB_CPPFLAGS := ${CPP.BaseFlags}
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SUB_CFLAGS := ${CPP.BaseFlags} ${C.Flags}
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SUB_CXXFLAGS := ${CPP.BaseFlags} ${CXX.Flags}
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# This is blank for now. We need to be careful about adding stuff here:
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# LDFLAGS tend not to be portable, and we don't currently require the
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# user to use libtool when linking against LLVM.
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SUB_LDFLAGS :=
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$(ObjDir)/BuildVariables.inc: $(BUILDVARIABLES_SRCPATH) Makefile $(ObjDir)/.dir
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$(Echo) "Building llvm-config BuildVariables.inc file."
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$(Verb) $(ECHO) 's/@LLVM_SRC_ROOT@/$(subst /,\/,$(LLVM_SRC_ROOT))/' \
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> temp.sed
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$(Verb) $(ECHO) 's/@LLVM_OBJ_ROOT@/$(subst /,\/,$(LLVM_OBJ_ROOT))/' \
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>> temp.sed
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$(Verb) $(ECHO) 's/@LLVM_CPPFLAGS@/$(subst /,\/,$(SUB_CPPFLAGS))/' \
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>> temp.sed
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$(Verb) $(ECHO) 's/@LLVM_CFLAGS@/$(subst /,\/,$(SUB_CFLAGS))/' \
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>> temp.sed
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$(Verb) $(ECHO) 's/@LLVM_CXXFLAGS@/$(subst /,\/,$(SUB_CXXFLAGS))/' \
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>> temp.sed
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$(Verb) $(ECHO) 's/@LLVM_LDFLAGS@/$(subst /,\/,$(SUB_LDFLAGS))/' \
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>> temp.sed
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$(Verb) $(ECHO) 's/@LLVM_BUILDMODE@/$(subst /,\/,$(BuildMode))/' \
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>> temp.sed
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$(Verb) $(ECHO) 's/@LLVM_SYSTEM_LIBS@/$(subst /,\/,$(LIBS))/' \
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>> temp.sed
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$(Verb) $(SED) -f temp.sed < $< > $@
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$(Verb) $(RM) temp.sed
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@ -33,15 +33,9 @@
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using namespace llvm;
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// FIXME: Need to get various bits of build time information.
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const char LLVM_SRC_ROOT[] = "FIXME";
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const char LLVM_OBJ_ROOT[] = "FIXME";
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const char LLVM_CPPFLAGS[] = "FIXME";
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const char LLVM_CFLAGS[] = "FIXME";
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const char LLVM_LDFLAGS[] = "FIXME";
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const char LLVM_CXXFLAGS[] = "FIXME";
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const char LLVM_BUILDMODE[] = "FIXME";
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const char LLVM_SYSTEM_LIBS[] = "FIXME";
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// Include the build time variables we can report to the user. This is generated
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// at build time from the BuildVariables.inc.in file by the build system.
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#include "BuildVariables.inc"
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// Include the component table. This creates an array of struct
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// AvailableComponent entries, which record the component name, library name,
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