llvm-6502/tools/llvm-config/Makefile
JF Bastien 6a829ed9d4 Fix llvm-config to emit the linker flag for the combined shared object built by autoconfig/make instead of the individual components.
Summary:
When LLVM is configured to build shared libraries, CMake builds each component as it's own shared object, while autoconfig/make builds them statically and then links them all together to create a single shared object. This change adds compile time config flags to `llvm-config` so it can know whether LLVM's components are separated or not and act accordingly.

This fixes `llvm-config` instead of fixing the makefiles to behave like CMake because, AIUI, LLVM's autoconfig/make build system is on the way out anyway.

This change only affects `llvm-config` from builds that use autoconfig/make.

Reviewers: jfb

Subscribers: echristo, dschuff, llvm-commits

Differential Revision: http://reviews.llvm.org/D11392

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243297 91177308-0d34-0410-b5e6-96231b3b80d8
2015-07-27 18:26:30 +00:00

84 lines
3.0 KiB
Makefile

##===- tools/llvm-config/Makefile---------------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file is distributed under the University of Illinois Open Source
# License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL := ../..
TOOLNAME := llvm-config
USEDLIBS := LLVMSupport.a
# We generate sources in the build directory, make sure it is in the include
# paths.
INCLUDE_BUILD_DIR := 1
# This tool has no plugins, optimize startup time.
TOOL_NO_EXPORTS := 1
# Note that we have to use lazy expansion here.
BUILDVARIABLES_SRCPATH = $(PROJ_SRC_ROOT)/tools/$(TOOLNAME)/BuildVariables.inc.in
BUILDVARIABLES_OBJPATH = $(ObjDir)/BuildVariables.inc
BUILT_SOURCES = $(BUILDVARIABLES_OBJPATH)
include $(LEVEL)/Makefile.common
# Combine preprocessor flags (except for -I) and CXX flags.
SUB_CPPFLAGS := ${CPP.BaseFlags}
SUB_CFLAGS := ${CPP.BaseFlags} ${C.Flags}
SUB_CXXFLAGS := ${CPP.BaseFlags} ${CXX.Flags}
# Override LIBS with TARGET's LIBS for cross compilation.
# FIXME: Host's llvm-config is not generated. It's for target's.
ifneq ($(TARGET_LIBS), )
LLVM_SYSTEM_LIBS := $(TARGET_LIBS)
else
LLVM_SYSTEM_LIBS := $(LIBS)
endif
# This is blank for now. We need to be careful about adding stuff here:
# LDFLAGS tend not to be portable, and we don't currently require the
# user to use libtool when linking against LLVM.
SUB_LDFLAGS :=
$(ObjDir)/BuildVariables.inc: $(BUILDVARIABLES_SRCPATH) Makefile $(ObjDir)/.dir
$(Echo) "Building llvm-config BuildVariables.inc file."
$(Verb) $(ECHO) 's/@LLVM_SRC_ROOT@/$(subst /,\/,$(LLVM_SRC_ROOT))/' \
> temp.sed
$(Verb) $(ECHO) 's/@LLVM_OBJ_ROOT@/$(subst /,\/,$(LLVM_OBJ_ROOT))/' \
>> temp.sed
$(Verb) $(ECHO) 's/@LLVM_CPPFLAGS@/$(subst /,\/,$(SUB_CPPFLAGS))/' \
>> temp.sed
$(Verb) $(ECHO) 's/@LLVM_CFLAGS@/$(subst /,\/,$(SUB_CFLAGS))/' \
>> temp.sed
$(Verb) $(ECHO) 's/@LLVM_CXXFLAGS@/$(subst /,\/,$(SUB_CXXFLAGS))/' \
>> temp.sed
$(Verb) $(ECHO) 's/@LLVM_LDFLAGS@/$(subst /,\/,$(SUB_LDFLAGS))/' \
>> temp.sed
$(Verb) $(ECHO) 's/@LLVM_BUILDMODE@/$(subst /,\/,$(BuildMode))/' \
>> temp.sed
$(Verb) $(ECHO) 's/@LLVM_LIBDIR_SUFFIX@//' \
>> temp.sed
$(Verb) $(ECHO) 's/@LLVM_SYSTEM_LIBS@/$(subst /,\/,$(LLVM_SYSTEM_LIBS))/' \
>> temp.sed
$(Verb) $(ECHO) 's/@LLVM_TARGETS_BUILT@/$(subst /,\/,$(TARGETS_TO_BUILD))/' \
>> temp.sed
$(if $(filter-out $(ENABLE_SHARED),0),\
$(Verb) $(ECHO) 's/@BUILD_SHARED_LIBS@/ON/',\
$(Verb) $(ECHO) 's/@BUILD_SHARED_LIBS@/OFF/') \
>> temp.sed
$(Verb) $(ECHO) 's/@WAS_BUILT_WITH_CMAKE@/OFF/' \
>> temp.sed
$(Verb) $(SED) -f temp.sed < $< > $@
$(Verb) $(RM) temp.sed
# When cross-compiling, install a version of llvm-config that runs on the host.
ifeq ($(LLVM_CROSS_COMPILING),1)
install:: $(DESTDIR)$(PROJ_bindir)
$(Echo) Installing llvm-config-host
$(Verb) $(ProgInstall) $(BuildLLVMToolDir)/llvm-config \
$(DESTDIR)$(PROJ_bindir)/$(program_prefix)llvm-config-host
endif