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738428dc0e
The current mechanism uses a completely separate build rule for each file which must be built with system headers. This is tricky to maintain. Add a foreach template in the sandbox cpu Makefile which generates the custom compile rules from a CFLAGS_USE_SYSHDRS list. This keeps the rules data-driven without needing changes to the common scripts/Makefile.lib, which could affect other architectures. Move initjmp.o into the template since it uses the same pattern. Add sdl.o to the list too, with an override for its command since it also needs -fshort-wchar removed and -fno-lto added. Signed-off-by: Simon Glass <sjg@chromium.org>
34 lines
1.1 KiB
Makefile
34 lines
1.1 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0+
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#
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# Copyright (c) 2011 The Chromium OS Authors.
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#
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# (C) Copyright 2000-2003
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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obj-y := cache.o cpu.o state.o initjmp.o os.o
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extra-y := start.o
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extra-$(CONFIG_SANDBOX_SDL) += sdl.o
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obj-$(CONFIG_XPL_BUILD) += spl.o
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obj-$(CONFIG_ETH_SANDBOX_RAW) += eth-raw-os.o
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# These files need to be built with system headers, since they use system
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# calls or system-level interfaces. Generate a custom compile rule for each
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# one that drops -nostdinc and converts -I to -idirafter.
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CFLAGS_USE_SYSHDRS := eth-raw-os.o initjmp.o os.o sdl.o
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define syshdrs_rule
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quiet_cmd_cc_$(1) = CC $$(quiet_modtag) $$@
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cmd_cc_$(1) = $$(CC) $$(filter-out -nostdinc, \
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$$(patsubst -I%,-idirafter%,$$(c_flags))) -c -o $$@ $$<
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$$(obj)/$(1): $$(src)/$(1:.o=.c) FORCE
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$$(call if_changed_dep,cc_$(1))
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endef
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$(foreach f,$(CFLAGS_USE_SYSHDRS),$(eval $(call syshdrs_rule,$(f))))
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# sdl.c also needs -fshort-wchar removed (musl) and -fno-lto, so override
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# the generated rule
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cmd_cc_sdl.o = $(CC) $(filter-out -nostdinc -fshort-wchar, \
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$(patsubst -I%,-idirafter%,$(c_flags))) -fno-lto -c -o $@ $<
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