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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>
131 lines
3.6 KiB
Makefile
131 lines
3.6 KiB
Makefile
############################################################################
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# syscall/Makefile
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#
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# SPDX-License-Identifier: Apache-2.0
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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 $(TOPDIR)/Make.defs
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include proxies/Make.defs
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include stubs/Make.defs
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include wraps/Make.defs
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MKSYSCALL = "$(TOPDIR)$(DELIM)tools$(DELIM)mksyscall$(HOSTEXEEXT)"
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CSVFILE = "$(TOPDIR)$(DELIM)syscall$(DELIM)syscall.csv"
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STUB_SRCS += syscall_names.c
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ifeq ($(CONFIG_SCHED_INSTRUMENTATION_SYSCALL),y)
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ifeq ($(CONFIG_LIB_SYSCALL),y)
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PROXY_SRCS += syscall_names.c
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else
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WRAP_SRCS += syscall_names.c
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endif
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endif
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STUB_SRCS += syscall_stublookup.c
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AOBJS = $(ASRCS:.S=$(OBJEXT))
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PROXY_OBJS = $(PROXY_SRCS:.c=$(OBJEXT))
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STUB_OBJS = $(STUB_SRCS:.c=$(OBJEXT))
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WRAP_OBJS = $(WRAP_SRCS:.c=$(OBJEXT))
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CSRCS = $(sort $(PROXY_SRCS) $(STUB_SRCS) $(WRAP_SRCS))
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COBJS = $(CSRCS:.c=$(OBJEXT))
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SRCS = $(ASRCS) $(CSRCS)
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OBJS = $(AOBJS) $(COBJS)
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PROXYDEPPATH = --dep-path proxies
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STUBDEPPATH = --dep-path stubs
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WRAPDEPPATH = --dep-path wraps
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VPATH = proxies:stubs:wraps
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BIN1 = libproxies$(LIBEXT)
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BIN2 = libstubs$(LIBEXT)
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BIN3 = libwraps$(LIBEXT)
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SYSCALLWRAPS = syscall_wraps.ldcmd
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all: $(BIN1) $(BIN2) $(BIN3) $(SYSCALLWRAPS)
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.PHONY: context depend clean distclean
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$(AOBJS): %$(OBJEXT): %.S
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$(call ASSEMBLE, $<, $@)
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$(COBJS): %$(OBJEXT): %.c
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$(call COMPILE, $<, $@)
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$(BIN1): $(PROXY_OBJS)
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$(call ARCHIVE_REBUILD, $@, $(PROXY_OBJS))
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$(BIN2): $(STUB_OBJS)
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$(call ARCHIVE_REBUILD, $@, $(STUB_OBJS))
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$(BIN3): $(WRAP_OBJS)
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$(call ARCHIVE_REBUILD, $@, $(WRAP_OBJS))
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$(SYSCALLWRAPS): .context
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makedepfile: $(CSRCS:.c=.ddc) $(ASRCS:.S=.dds)
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$(call CATFILE, Make.dep, $^)
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$(call DELFILE, $^)
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.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
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$(Q) $(MAKE) makedepfile DEPPATH="$(PROXYDEPPATH) $(STUBDEPPATH) $(WRAPDEPPATH)"
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$(Q) touch $@
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depend: .depend
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.context: syscall.csv
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$(Q) $(MAKE) -C $(TOPDIR)$(DELIM)tools -f Makefile.host mksyscall
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ifeq ($(CONFIG_LIB_SYSCALL),y)
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$(Q) (cd proxies; $(MKSYSCALL) -p $(CSVFILE);)
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$(Q) (cd stubs; $(MKSYSCALL) -s $(CSVFILE);)
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endif
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ifeq ($(CONFIG_SCHED_INSTRUMENTATION_SYSCALL),y)
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$(Q) (cd wraps; $(MKSYSCALL) -w $(CSVFILE);)
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$(Q) $(CPP) $(CPPFLAGS) $(SYSCALLWRAPS:.ldcmd=.h) | \
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sed -e '1,/WRAPOPTSTARTS/d' -e '/^#/d' > $(SYSCALLWRAPS)
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endif
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$(Q) touch $@
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context: .context
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clean:
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$(call DELFILE, $(BIN1))
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$(call DELFILE, $(BIN2))
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$(call DELFILE, $(BIN3))
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ifneq ($(OBJEXT),)
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$(call DELFILE, proxies$(DELIM)*$(OBJEXT))
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$(call DELFILE, stubs$(DELIM)*$(OBJEXT))
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$(call DELFILE, wraps$(DELIM)*$(OBJEXT))
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endif
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$(call CLEAN)
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distclean: clean
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$(call DELFILE, .context)
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$(call DELFILE, $(CSRCS:.c=.ddc) $(ASRCS:.S=.dds))
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$(call DELFILE, Make.dep)
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$(call DELFILE, .depend)
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$(call DELFILE, proxies$(DELIM)*.c)
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$(call DELFILE, stubs$(DELIM)*.c)
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$(call DELFILE, wraps$(DELIM)*.c)
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$(call DELFILE, $(SYSCALLWRAPS))
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-include Make.dep
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