Revert commit 145449 (ddunbar) since it is breaking the dragonegg buildbots.

[oota-llvm.git] / tools / llvm-config / Makefile

diff --git a/tools/llvm-config/Makefile b/tools/llvm-config/Makefile
index a7a2a63f99bec7bbd34128db0e45cff77e9b1b20..184919ea9711522c43329ac78268540c3ab97993 100644 (file)
--- a/tools/llvm-config/Makefile
+++ b/tools/llvm-config/Makefile
@@ -1,5 +1,5 @@
-##===- tools/llvm-config/Makefile---------------------------*- Makefile -*-===##
-# 
+##===- tools/llvm-config/Makefile --------------------------*- Makefile -*-===##
+#
 #                     The LLVM Compiler Infrastructure
 #
 # This file is distributed under the University of Illinois Open Source
@@ -7,42 +7,57 @@
 # 
 ##===----------------------------------------------------------------------===##
 
-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
+LEVEL = ../..
 
-# 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)
+EXTRA_DIST = LibDeps.txt FinalLibDeps.txt llvm-config.in.in find-cycles.pl
 
 include $(LEVEL)/Makefile.common
 
+# If we don't have Perl, we can't generate the library dependencies upon which 
+# llvm-config depends. Therefore, only if we detect perl will we do anything
+# useful.
+ifeq ($(HAVE_PERL),1)
+
 # 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}
+SUB_CPPFLAGS = ${CPP.BaseFlags}
+SUB_CFLAGS   = ${CPP.BaseFlags} ${C.Flags}
+SUB_CXXFLAGS = ${CPP.BaseFlags} ${CXX.Flags}
 
 # 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 :=
+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
+FinalLibDeps = $(PROJ_OBJ_DIR)/FinalLibDeps.txt
+LibDeps      = $(PROJ_OBJ_DIR)/LibDeps.txt
+LibDepsTemp  = $(PROJ_OBJ_DIR)/LibDeps.txt.tmp
+GenLibDeps   = $(PROJ_SRC_ROOT)/utils/GenLibDeps.pl
+
+$(LibDepsTemp): $(GenLibDeps) $(LibDir) $(wildcard $(LibDir)/*.a $(LibDir)/*.o)
+       $(Echo) "Regenerating LibDeps.txt.tmp"
+       $(Verb) $(PERL) $(GenLibDeps) -flat $(LibDir) "$(NM_PATH)" > $(LibDepsTemp)
+
+$(LibDeps): $(LibDepsTemp)
+       $(Verb) $(CMP) -s $@ $< || ( $(CP) $< $@ && \
+         $(EchoCmd) Updated LibDeps.txt because dependencies changed )
+
+# Find all the cyclic dependencies between various LLVM libraries, so we
+# don't have to process them at runtime.
+$(FinalLibDeps): find-cycles.pl $(LibDeps)
+       $(Echo) "Checking for cyclic dependencies between LLVM libraries."
+       $(Verb) $(PERL) $< < $(LibDeps) > $@ || rm -f $@
+
+# Rerun our configure substitutions as needed.
+ConfigInIn = $(PROJ_SRC_DIR)/llvm-config.in.in
+llvm-config.in: $(ConfigInIn) $(ConfigStatusScript)
+       $(Verb) cd $(PROJ_OBJ_ROOT) ; \
+               $(ConfigStatusScript) tools/llvm-config/llvm-config.in
+
+# Build our final script.
+$(ToolDir)/llvm-config: llvm-config.in $(FinalLibDeps)
+       $(Echo) "Building llvm-config script."
        $(Verb) $(ECHO) 's/@LLVM_CPPFLAGS@/$(subst /,\/,$(SUB_CPPFLAGS))/' \
-         >> temp.sed
+         > temp.sed
        $(Verb) $(ECHO) 's/@LLVM_CFLAGS@/$(subst /,\/,$(SUB_CFLAGS))/' \
          >> temp.sed
        $(Verb) $(ECHO) 's/@LLVM_CXXFLAGS@/$(subst /,\/,$(SUB_CXXFLAGS))/' \
@@ -51,7 +66,28 @@ $(ObjDir)/BuildVariables.inc: $(BUILDVARIABLES_SRCPATH) Makefile $(ObjDir)/.dir
          >> temp.sed
        $(Verb) $(ECHO) 's/@LLVM_BUILDMODE@/$(subst /,\/,$(BuildMode))/' \
          >> temp.sed
-       $(Verb) $(ECHO) 's/@LLVM_SYSTEM_LIBS@/$(subst /,\/,$(LIBS))/' \
+       $(Verb) $(ECHO) 's/@LLVM_OBJ_SUFFIX@/$(subst /,\/,/$(BuildMode))/' \
          >> temp.sed
        $(Verb) $(SED) -f temp.sed < $< > $@
        $(Verb) $(RM) temp.sed
+       $(Verb) cat $(FinalLibDeps) >> $@
+       $(Verb) chmod +x $@
+
+else
+# We don't have perl, just generate a dummy llvm-config
+$(ToolDir)/llvm-config:
+       $(Echo) "Building place holder llvm-config script."
+       $(Verb) $(ECHO) 'echo llvm-config: Perl not found so llvm-config could not be generated' >> $@
+       $(Verb) chmod +x $@
+
+endif
+# Hook into the standard Makefile rules.
+all-local:: $(ToolDir)/llvm-config
+clean-local::
+       $(Verb) $(RM) -f $(ToolDir)/llvm-config llvm-config.in $(FinalLibDeps) \
+         $(LibDeps) GenLibDeps.out
+install-local:: all-local
+       $(Echo) Installing llvm-config
+       $(Verb) $(MKDIR) $(DESTDIR)$(PROJ_bindir)
+       $(Verb) $(ScriptInstall) $(ToolDir)/llvm-config $(DESTDIR)$(PROJ_bindir)
+