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# Building the libcap/{cap.psx} Go packages, and examples.
#
# Note, we use symlinks to construct a GOPATH friendly src tree. The
# packages themselves are intended to be (ultimately) found via proxy
# as "kernel.org/pub/linux/libs/security/libcap/cap" and
# "kernel.org/pub/linux/libs/security/libcap/psx". However, to
# validate their use on these paths, we fake such a structure in the
# build tree with symlinks.
topdir=$(realpath ..)
include $(topdir)/Make.Rules
GOPATH=$(realpath .)
IMPORTDIR=kernel.org/pub/linux/libs/security/libcap
PKGDIR=pkg/$(GOOSARCH)/$(IMPORTDIR)
PSXGOPACKAGE=$(PKGDIR)/psx.a
CAPGOPACKAGE=$(PKGDIR)/cap.a
DEPS=../libcap/libcap.a ../libcap/libpsx.a
all: $(PSXGOPACKAGE) $(CAPGOPACKAGE) web compare-cap try-launching
$(DEPS):
make -C ../libcap all
../progs/tcapsh-static:
make -C ../progs tcapsh-static
src/$(IMPORTDIR)/psx:
mkdir -p "src/$(IMPORTDIR)"
ln -s $(topdir)/psx $@
src/$(IMPORTDIR)/cap:
mkdir -p "src/$(IMPORTDIR)"
ln -s $(topdir)/cap $@
$(topdir)/libcap/cap_names.h: $(DEPS)
make -C $(topdir)/libcap all
good-names.go: $(topdir)/libcap/cap_names.h src/$(IMPORTDIR)/cap mknames.go
$(GO) run mknames.go --header=$< --textdir=$(topdir)/doc/values | gofmt > $@ || rm -f $@
diff -u ../cap/names.go $@
$(PSXGOPACKAGE): src/$(IMPORTDIR)/psx ../psx/*.go $(DEPS)
mkdir -p pkg
GO111MODULE=off CGO_LDFLAGS_ALLOW="$(CGO_LDFLAGS_ALLOW)" GOPATH="$(GOPATH)" $(GO) install $(IMPORTDIR)/psx
$(CAPGOPACKAGE): src/$(IMPORTDIR)/cap ../cap/*.go good-names.go $(PSXGOPACKAGE)
GO111MODULE=off CGO_LDFLAGS_ALLOW="$(CGO_LDFLAGS_ALLOW)" GOPATH=$(GOPATH) $(GO) install $(IMPORTDIR)/cap
# Compiles something with this package to compare it to libcap. This
# tests more when run under sudotest (see ../progs/quicktest.sh for that).
compare-cap: compare-cap.go $(CAPGOPACKAGE)
GO111MODULE=off CGO_LDFLAGS_ALLOW="$(CGO_LDFLAGS_ALLOW)" CGO_CFLAGS="$(CGO_CFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" GOPATH=$(GOPATH) $(GO) build $<
web: ../goapps/web/web.go $(CAPGOPACKAGE)
GO111MODULE=off CGO_ENABLED="$(CGO_REQUIRED)" CGO_LDFLAGS_ALLOW="$(CGO_LDFLAGS_ALLOW)" GOPATH=$(GOPATH) $(GO) build -o $@ $(GOBUILDTAG) $<
ifeq ($(RAISE_GO_FILECAP),yes)
make -C ../progs setcap
sudo ../progs/setcap cap_setpcap,cap_net_bind_service=p web
@echo "NOTE: RAISED cap_setpcap,cap_net_bind_service ON web binary"
endif
ok: ok.go
GO111MODULE=off CGO_ENABLED=0 GOPATH=$(GOPATH) $(GO) build $<
try-launching: try-launching.go $(CAPGOPACKAGE) ok
GO111MODULE=off CGO_ENABLED="$(CGO_REQUIRED)" CGO_LDFLAGS_ALLOW="$(CGO_LDFLAGS_ALLOW)" GOPATH=$(GOPATH) $(GO) build $(GOBUILDTAG) $<
ifeq ($(CGO_REQUIRED),0)
GO111MODULE=off CGO_ENABLED="1" CGO_LDFLAGS_ALLOW="$(CGO_LDFLAGS_ALLOW)" GOPATH=$(GOPATH) $(GO) build -o $@-cgo $<
endif
test: all
GO111MODULE=off CGO_LDFLAGS_ALLOW="$(CGO_LDFLAGS_ALLOW)" GOPATH="$(GOPATH)" $(GO) test $(IMPORTDIR)/psx
GO111MODULE=off CGO_LDFLAGS_ALLOW="$(CGO_LDFLAGS_ALLOW)" GOPATH="$(GOPATH)" $(GO) test $(IMPORTDIR)/cap
LD_LIBRARY_PATH=../libcap ./compare-cap
sudotest: test ../progs/tcapsh-static
./try-launching
ifeq ($(CGO_REQUIRED),0)
./try-launching-cgo
endif
sudo ./try-launching
ifeq ($(CGO_REQUIRED),0)
sudo ./try-launching-cgo
endif
install: all
rm -rf $(FAKEROOT)$(GOPKGDIR)/$(IMPORTDIR)/psx
mkdir -p $(FAKEROOT)$(GOPKGDIR)/$(IMPORTDIR)/psx/include/sys
for x in src/$(IMPORTDIR)/psx/* ; do if [ -d $$x ]; then continue; fi; install -m 0644 $$x $(FAKEROOT)$(GOPKGDIR)/$(IMPORTDIR)/psx; done
install -m 0644 src/$(IMPORTDIR)/psx/include/sys/psx_syscall.h $(FAKEROOT)$(GOPKGDIR)/$(IMPORTDIR)/psx/include/sys/psx_syscall.h
mkdir -p $(FAKEROOT)$(GOPKGDIR)/$(IMPORTDIR)/cap
rm -rf $(FAKEROOT)$(GOPKGDIR)/$(IMPORTDIR)/cap/*
install -m 0644 src/$(IMPORTDIR)/cap/* $(FAKEROOT)$(GOPKGDIR)/$(IMPORTDIR)/cap
clean:
rm -f *.o *.so *~ mknames web ok good-names.go
rm -f compare-cap try-launching try-launching-cgo
rm -f $(topdir)/cap/*~ $(topdir)/psx/*~
rm -fr pkg src
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