criu/scripts/nmk/scripts/utils.mk
Mike Frysinger 2967bed64e build: respect $PKG_CONFIG settings
The build needs to respect $PKG_CONFIG env var like other standard
build systems and the the upstream pkg-config project itself.  This
allows the package builder to point it to the right tool when doing
a cross-compile build.  Otherwise the host pkg-config tool is used
which won't have access to the packages in the cross sysroot.

Signed-off-by: Mike Frysinger <vapier@chromium.org>
2021-09-03 10:31:00 -07:00

35 lines
1.1 KiB
Makefile

ifndef ____nmk_defined__utils
#
# Usage: option := $(call try-compile,language,source-to-build,cc-options,cc-defines)
try-compile = $(shell sh -c 'echo "$(2)" | \
$(CC) $(CFLAGS) $(LDFLAGS) $(4) -x $(1) - $(3) -o /dev/null > /dev/null 2>&1 && \
echo true || echo false')
#
# Usage: option := $(call try-cc,source-to-build,cc-options,cc-defines)
try-cc = $(call try-compile,c,$(1),$(2),$(3))
#
# Usage: option := $(call try-cc,source-to-build,cc-options,cc-defines)
try-asm = $(call try-compile,assembler-with-cpp,$(1),$(2),$(3))
# pkg-config-check
# Usage: ifeq ($(call pkg-config-check, library),y)
pkg-config-check = $(shell sh -c '$(PKG_CONFIG) $(1) && echo y')
#
# Remove duplicates.
uniq = $(strip $(if $1,$(firstword $1) $(call uniq,$(filter-out $(firstword $1),$1))))
#
# Add $(obj)/ for paths that are not relative
objectify = $(foreach o,$(1),$(if $(filter /% ./% ../%,$(o)),$(o),$(obj)/$(o)))
# To cleanup entries.
cleanify = $(foreach o,$(sort $(call uniq,$(1))),$(o) $(o:.o=.d) $(o:.o=.i) $(o:.o=.s) $(o:.o=.gcda) $(o:.o=.gcno))
#
# Footer.
____nmk_defined__utils = y
endif