35135842ca
Add RequireCHeader helper that will try to compile a fake c program with the requested header included. This is useful to check if a specific header is present in the system without checking for the specific path. This is a generilized version of the current ncurses test. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
131 lines
3.0 KiB
Makefile
131 lines
3.0 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 ($$(CHECK_$(1)),)
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prereq: prereq-$(1)
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prereq-$(1): $(if $(PREREQ_PREV),prereq-$(PREREQ_PREV)) FORCE
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printf "Checking '$(1)'... "
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if $(NO_TRACE_MAKE) -f $(firstword $(MAKEFILE_LIST)) check-$(1) >/dev/null 2>/dev/null; then \
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echo 'ok.'; \
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else \
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echo 'failed.'; \
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echo "$(PKG_NAME): $(strip $(2))" >> $(TMP_DIR)/.prereq-error; \
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fi
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check-$(1): FORCE
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$(call Require/$(1))
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CHECK_$(1):=1
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.SILENT: prereq-$(1) check-$(1)
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.NOTPARALLEL:
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endif
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PREREQ_PREV=$(1)
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endef
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define RequireCommand
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define Require/$(1)
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command -v $(1)
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endef
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$$(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 $$(call Require,$(1),$(2)))
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endef
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define CleanupPython2
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define Require/python2-cleanup
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if [ -f "$(STAGING_DIR_HOST)/bin/python" ] && \
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$(STAGING_DIR_HOST)/bin/python -V 2>&1 | \
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grep -q 'Python 2'; then \
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rm $(STAGING_DIR_HOST)/bin/python; \
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fi
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endef
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$$(eval $$(call Require,python2-cleanup))
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endef
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define QuoteHostCommand
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'$(subst ','"'"',$(strip $(1)))'
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endef
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# 1: display name
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# 2: failure message
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# 3: test
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define TestHostCommand
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define Require/$(1)
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($(3)) >/dev/null 2>/dev/null
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endef
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$$(eval $$(call Require,$(1),$(2)))
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endef
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# 1: canonical name
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# 2: failure message
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# 3+: candidates
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define SetupHostCommand
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define Require/$(1)
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[ -f "$(STAGING_DIR_HOST)/bin/$(strip $(1))" ] && exit 0; \
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for cmd in $(call QuoteHostCommand,$(3)) $(call QuoteHostCommand,$(4)) \
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$(call QuoteHostCommand,$(5)) $(call QuoteHostCommand,$(6)) \
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$(call QuoteHostCommand,$(7)) $(call QuoteHostCommand,$(8)) \
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$(call QuoteHostCommand,$(9)) $(call QuoteHostCommand,$(10)) \
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$(call QuoteHostCommand,$(11)) $(call QuoteHostCommand,$(12)); do \
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if [ -n "$$$$$$$$cmd" ]; then \
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bin="$$$$$$$$(PATH="$(subst $(space),:,$(filter-out $(STAGING_DIR_HOST)/%,$(subst :,$(space),$(PATH))))" \
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command -v "$$$$$$$${cmd%% *}")"; \
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if [ -x "$$$$$$$$bin" ] && eval "$$$$$$$$cmd" >/dev/null 2>/dev/null; then \
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mkdir -p "$(STAGING_DIR_HOST)/bin"; \
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ln -sf "$$$$$$$$bin" "$(STAGING_DIR_HOST)/bin/$(strip $(1))"; \
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exit 0; \
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fi; \
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fi; \
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done; \
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exit 1
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endef
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$$(eval $$(call Require,$(1),$(if $(2),$(2),Missing $(1) command)))
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endef
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