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e972e4f2a9
Some programs installed to staging_dir/host/bin
also install some symlinks to itself
for an alternative name.
Some of those new symlinks are overwriting
symlinks that were installed by prereq stage.
If prereq stage were to somehow be run again,
it should not be overwriting symlinks
that point to programs that are already built.
To filter that out, catch all symlinks
after first catching all symlinks
that have an absolute target
after all other cases in the case statement,
make sure it is not broken, and if so exit successfully.
Suggested-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Signed-off-by: Michael Pratt <mcpratt@pm.me>
(cherry picked from commit b890e2fbf9)
133 lines
3.2 KiB
Makefile
133 lines
3.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Copyright (C) 2006-2020 OpenWrt.org
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ifneq ($(__prereq_inc),1)
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__prereq_inc:=1
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prereq:
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if [ -f $(TMP_DIR)/.prereq-error ]; then \
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echo; \
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cat $(TMP_DIR)/.prereq-error; \
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rm -f $(TMP_DIR)/.prereq-error; \
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echo; \
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false; \
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fi
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.SILENT: prereq
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endif
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PREREQ_PREV=
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# 1: display name
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# 2: error message
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define Require
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export PREREQ_CHECK=1
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ifeq ($$(CHECK_$(1)),)
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prereq: prereq-$(1)
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prereq-$(1): $(if $(PREREQ_PREV),prereq-$(PREREQ_PREV)) FORCE
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printf "Checking '$(1)'... "
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if $(NO_TRACE_MAKE) -f $(firstword $(MAKEFILE_LIST)) check-$(1) PATH="$(ORIG_PATH)" >/dev/null 2>/dev/null; then \
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echo 'ok.'; \
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elif $(NO_TRACE_MAKE) -f $(firstword $(MAKEFILE_LIST)) check-$(1) PATH="$(ORIG_PATH)" >/dev/null 2>/dev/null; then \
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echo 'updated.'; \
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else \
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echo 'failed.'; \
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echo "$(PKG_NAME): $(strip $(2))" >> $(TMP_DIR)/.prereq-error; \
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fi
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check-$(1): FORCE
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$(call Require/$(1))
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CHECK_$(1):=1
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.SILENT: prereq-$(1) check-$(1)
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.NOTPARALLEL:
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endif
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PREREQ_PREV=$(1)
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endef
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define RequireCommand
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define Require/$(1)
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command -v $(1)
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endef
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$$(eval $$(call Require,$(1),$(2)))
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endef
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define RequireHeader
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define Require/$(1)
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[ -e "$(1)" ]
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endef
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$$(eval $$(call Require,$(1),$(2)))
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endef
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# 1: header to test
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# 2: failure message
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# 3: optional compile time test
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# 4: optional link library test (example -lncurses)
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define RequireCHeader
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define Require/$(1)
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echo 'int main(int argc, char **argv) { $(3); return 0; }' | gcc -include $(1) -x c -o $(TMP_DIR)/a.out - $(4)
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endef
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$$(eval $$(call Require,$(1),$(2)))
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endef
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define QuoteHostCommand
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'$(subst ','"'"',$(strip $(1)))'
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endef
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# 1: display name
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# 2: failure message
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# 3: test
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define TestHostCommand
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define Require/$(1)
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($(3)) >/dev/null 2>/dev/null
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endef
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$$(eval $$(call Require,$(1),$(2)))
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endef
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# 1: canonical name
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# 2: failure message
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# 3+: candidates
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define SetupHostCommand
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define Require/$(1)
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mkdir -p "$(STAGING_DIR_HOST)/bin"; \
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for cmd in $(call QuoteHostCommand,$(3)) $(call QuoteHostCommand,$(4)) \
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$(call QuoteHostCommand,$(5)) $(call QuoteHostCommand,$(6)) \
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$(call QuoteHostCommand,$(7)) $(call QuoteHostCommand,$(8)) \
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$(call QuoteHostCommand,$(9)) $(call QuoteHostCommand,$(10)) \
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$(call QuoteHostCommand,$(11)) $(call QuoteHostCommand,$(12)); do \
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if [ -n "$$$$$$$$cmd" ]; then \
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bin="$$$$$$$$(command -v "$$$$$$$${cmd%% *}")"; \
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if [ -x "$$$$$$$$bin" ] && eval "$$$$$$$$cmd" >/dev/null 2>/dev/null; then \
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case "$$$$$$$$(ls -dl -- $(STAGING_DIR_HOST)/bin/$(strip $(1)))" in \
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*" -> $$$$$$$$bin"*) \
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[ -x "$(STAGING_DIR_HOST)/bin/$(strip $(1))" ] && exit 0 \
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;; \
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"-"*) \
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find "$(STAGING_DIR_HOST)/stamp" | grep $(strip $(1)) && \
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[ -x "$(STAGING_DIR_HOST)/bin/$(strip $(1))" ] && exit 0 \
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;; \
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*" -> /"*) \
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;; \
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*" -> "*) \
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[ -x "$(STAGING_DIR_HOST)/bin/$(strip $(1))" ] && exit 0 \
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;; \
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esac; \
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ln -sf "$$$$$$$$bin" "$(STAGING_DIR_HOST)/bin/$(strip $(1))"; \
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exit 0; \
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fi; \
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fi; \
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done; \
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exit 1
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endef
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$$(eval $$(call Require,$(1),$(if $(2),$(2),Missing $(1) command)))
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endef
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