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c027e7c3e4
During the Toybox port to NuttX, Claude noticed that changes in the menuconfig weren't taking affect. This issue exists for a long time on NuttX, in fact BayLibre's presentation from 2017 make jokes about our building system not been reliable: https://www.youtube.com/watch?v=XUJK2htXxKw&t=320s Stale archive members from $(AR)'s additive-only behavior can linger after Kconfig toggles change which files provide a symbol, causing dead weight or "multiple definition" link errors on incremental builds. Fixed by splitting ARCHIVE into two macros: ARCHIVE keeps the original additive behavior for apps/libapps.a, which many independent subdirectories contribute to across a build, while the new ARCHIVE_REBUILD deletes then archives for the far more common case of a single Makefile building its own self-contained $(OBJS) - all 39 such call sites now use it. Assisted-By: Claude Sonnet 5 Signed-off-by: Alan C. Assis <acassis@gmail.com>
86 lines
2.3 KiB
Makefile
86 lines
2.3 KiB
Makefile
############################################################################
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# libs/libbuiltin/Makefile
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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###########################################################################
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include $(TOPDIR)/Make.defs
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BIN ?= libbuiltin$(LIBEXT)
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BINDIR ?= bin
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KBIN = libkbuiltin$(LIBEXT)
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KBINDIR = kbin
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include compiler-rt/Make.defs
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include libgcc/Make.defs
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AOBJS = $(addprefix $(BINDIR)$(DELIM), $(ASRCS:.S=$(OBJEXT)))
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COBJS = $(addprefix $(BINDIR)$(DELIM), $(CSRCS:.c=$(OBJEXT)))
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CXXOBJS = $(addprefix $(BINDIR)$(DELIM), $(CXXSRCS:.cxx=$(OBJEXT)))
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CPPOBJS = $(addprefix $(BINDIR)$(DELIM), $(CPPSRCS:.cpp=$(OBJEXT)))
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SRCS = $(ASRCS) $(CSRCS) $(CXXSRCS) $(CPPSRCS)
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OBJS = $(AOBJS) $(COBJS) $(CXXOBJS) $(CPPOBJS)
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all: $(BIN)
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.PHONY: depend clean distclean context
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$(AOBJS): $(BINDIR)$(DELIM)%$(OBJEXT): %.S
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$(call ASSEMBLE, $<, $@)
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$(COBJS): $(BINDIR)$(DELIM)%$(OBJEXT): %.c
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$(call COMPILE, $<, $@)
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$(CXXOBJS): $(BINDIR)$(DELIM)%$(OBJEXT): %.cxx
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$(call COMPILEXX, $<, $@)
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$(CPPOBJS): $(BINDIR)$(DELIM)%$(OBJEXT): %.cpp
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$(call COMPILEXX, $<, $@)
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bin:
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$(Q) mkdir $@
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kbin:
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$(Q) mkdir $@
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context:: bin kbin
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.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
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$(Q) touch $@
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depend:: .depend
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$(BIN): $(OBJS)
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$(call ARCHIVE_REBUILD, $@, $(OBJS))
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# C library for the kernel phase of the two-pass kernel build
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ifneq ($(BIN),$(KBIN))
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$(KBIN): $(OBJS)
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$(Q) $(MAKE) $(KBIN) BIN=$(KBIN) BINDIR=$(KBINDIR) EXTRAFLAGS="$(EXTRAFLAGS)"
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endif
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clean:
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$(call CLEAN)
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$(call DELFILE, $(BIN))
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$(call DELFILE, $(KBIN))
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distclean:: clean
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$(call DELDIR, bin)
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$(call DELDIR, kbin)
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$(call DELDIR, .depend)
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