wireguard-go-bridge: handle errors in makefile

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

diff --git a/wireguard-go-bridge/Makefile b/wireguard-go-bridge/Makefile
index 330ef600d9d9f0b3bd2d3679f0dc301e1c1280e8..349977fac566940dbc50d38d53a37fa97efe4b76 100644 (file)
--- a/wireguard-go-bridge/Makefile
+++ b/wireguard-go-bridge/Makefile
@@ -40,21 +40,18 @@ $(BUILDDIR)/.prepared:
 
 define libwg-go-a
 $(BUILDDIR)/libwg-go-$(1).a: $(BUILDDIR)/.prepared
-       cd "$(BUILDDIR)" && \
+       cd "$(BUILDDIR)" || exit $$$$?; \
        export CC="$(CC_$(1))" \
        CGO_CFLAGS="$(CGO_FLAGS_$(1))" \
        CGO_LDFLAGS="$(CGO_FLAGS_$(1))" \
        GOARCH="$(GOARCH_$(1))" \
        GOPATH="$(BUILDDIR)/gopath"; \
-       if ! go get -tags ios; then \
-               ret=$$$$?; \
-               chmod -fR +w "$(BUILDDIR)/gopath/pkg/mod"; \
-               rm -rf "$(BUILDDIR)/gopath/pkg/mod"; \
-               exit $$$$ret; \
-       fi; \
+       go get -tags ios || { ret=$$$$?; chmod -fR +w "$(BUILDDIR)/gopath/pkg/mod"; rm -rf "$(BUILDDIR)/gopath/pkg/mod"; exit $$$$ret; }; \
        chmod -fR +w "$(BUILDDIR)/gopath/pkg/mod"; \
        go build -tags ios -v -o "$(BUILDDIR)/libwg-go-$(1).a" -buildmode c-archive; \
-       rm -f "$(BUILDDIR)/libwg-go-$(1).h"
+       ret=$$$$?; \
+       rm -f "$(BUILDDIR)/libwg-go-$(1).h"; \
+       exit $$$$ret
 endef
 $(foreach ARCH,$(ARCHS),$(eval $(call libwg-go-a,$(ARCH))))