Fix spelling and grammar in a comment.

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

diff --git a/tools/llvm-config/Makefile b/tools/llvm-config/Makefile
index 34dfa5542be0ea337a5ac0b0f07659b8b8fb81c1..de89d290353a1406d51540a17efae3fc6a28bac4 100644 (file)
--- a/tools/llvm-config/Makefile
+++ b/tools/llvm-config/Makefile
@@ -1,16 +1,87 @@
-##===- utils/llvm-config/Makefile --------------------------*- Makefile -*-===##
-# 
+##===- tools/llvm-config/Makefile --------------------------*- Makefile -*-===##
+#
 #                     The LLVM Compiler Infrastructure
 #
-# This file was developed by Reid Spencer and Eric Kidd and is distributed under
-# the University of Illinois Open Source License. See LICENSE.TXT for details.
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
 # 
 ##===----------------------------------------------------------------------===##
 
 LEVEL = ../..
 
+EXTRA_DIST = LibDeps.txt FinalLibDeps.txt llvm-config.in.in find-cycles.pl
+REQUIRES_EH := 1
 
 include $(LEVEL)/Makefile.common
 
-LibDeps.txt: $(LEVEL)/utils/GenLibDeps.pl $(LibDir)
-       $(LEVEL)/utils/GenLibDeps.pl -flat $(LibDir) | sort > LibDeps.txt
+# If we don't have Perl, we can't generate the library dependencies upon which 
+# llvm-config depends. Therefore, only if we detect perl will we do anything
+# useful.
+ifeq ($(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}
+
+# 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 = 
+
+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) $(ECHO) 's,@LLVM_CPPFLAGS@,$(SUB_CPPFLAGS),' > temp.sed
+       $(Verb) $(ECHO) 's,@LLVM_CFLAGS@,$(SUB_CFLAGS),' >> temp.sed
+       $(Verb) $(ECHO) 's,@LLVM_CXXFLAGS@,$(SUB_CXXFLAGS),' >> temp.sed
+       $(Verb) $(ECHO) 's,@LLVM_LDFLAGS@,$(SUB_LDFLAGS),' >> temp.sed
+       $(Verb) $(ECHO) 's,@LLVM_BUILDMODE@,$(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) $(PROJ_bindir)
+       $(Verb) $(ScriptInstall) $(ToolDir)/llvm-config $(PROJ_bindir)
+