Openwrt/include/depends.mk
Leonardo Mörlein b993b68b6c build: introduce $(MKHASH)
Before this commit, it was assumed that mkhash is in the PATH. While
this was fine for the normal build workflow, this led to some issues if

    make TOPDIR="$(pwd)" -C "$pkgdir" compile

was called manually. In most of the cases, I just saw warnings like this:

    make: Entering directory '/home/.../package/gluon-status-page'
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    [...]

While these were only warnings and the package still compiled sucessfully,
I also observed that some package even fail to build because of this.

After applying this commit, the variable $(MKHASH) is introduced. This
variable points to $(STAGING_DIR_HOST)/bin/mkhash, which is always the
correct path.

Signed-off-by: Leonardo Mörlein <me@irrelefant.net>
2021-05-13 15:13:15 +02:00

53 lines
1.3 KiB
Makefile

# SPDX-License-Identifier: GPL-2.0-only
#
# Copyright (C) 2007-2020 OpenWrt.org
# define a dependency on a subtree
# parameters:
# 1: directories/files
# 2: directory dependency
# 3: tempfile for file listings
# 4: find options
DEP_FINDPARAMS := -x "*/.svn*" -x ".*" -x "*:*" -x "*\!*" -x "* *" -x "*\\\#*" -x "*/.*_check" -x "*/.*.swp" -x "*/.pkgdir*"
find_md5=find $(wildcard $(1)) -type f $(patsubst -x,-and -not -path,$(DEP_FINDPARAMS) $(2)) -printf "%p%T@\n" | sort | $(MKHASH) md5
define rdep
.PRECIOUS: $(2)
.SILENT: $(2)_check
$(2): $(2)_check
check-depends: $(2)_check
ifneq ($(wildcard $(2)),)
$(2)_check::
$(if $(3), \
$(call find_md5,$(1),$(4)) > $(3).1; \
{ [ \! -f "$(3)" ] || diff $(3) $(3).1 >/dev/null; } && \
) \
{ \
[ -f "$(2)_check.1" ] && mv "$(2)_check.1"; \
$(TOPDIR)/scripts/timestamp.pl $(DEP_FINDPARAMS) $(4) -n $(2) $(1) && { \
$(call debug_eval,$(SUBDIR),r,echo "No need to rebuild $(2)";) \
touch -r "$(2)" "$(2)_check"; \
} \
} || { \
$(call debug_eval,$(SUBDIR),r,echo "Need to rebuild $(2)";) \
touch "$(2)_check"; \
}
$(if $(3), mv $(3).1 $(3))
else
$(2)_check::
$(if $(3), rm -f $(3) $(3).1)
$(call debug_eval,$(SUBDIR),r,echo "Target $(2) not built")
endif
endef
ifeq ($(filter .%,$(MAKECMDGOALS)),$(if $(MAKECMDGOALS),$(MAKECMDGOALS),x))
define rdep
$(2): $(2)_check
endef
endif