diff --git i/go/Makefile w/go/Makefile
index d0b081d..ba3a357 100644
--- i/go/Makefile
+++ w/go/Makefile
@@ -68,19 +68,19 @@ ifeq ($(RAISE_GO_FILECAP),yes)
 endif
 
 setid: ../goapps/setid/setid.go CAPGOPACKAGE PSXGOPACKAGE
-	CC="$(CC)" CGO_ENABLED="$(CGO_REQUIRED)" $(CGO_LDFLAGS_ALLOW) $(GO) build $(GO_BUILD_FLAGS) -mod=vendor -o $@ $<
+	CC="$(CC)" CGO_ENABLED="$(CGO_REQUIRED)" $(CGO_LDFLAGS_ALLOW) CGO_CFLAGS="$(CGO_CFLAGS)" CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) build $(GO_BUILD_FLAGS) $(GOFLAGS) -mod=vendor -o $@ $<
 
 gowns: ../goapps/gowns/gowns.go CAPGOPACKAGE
-	CC="$(CC)" CGO_ENABLED="$(CGO_REQUIRED)" $(CGO_LDFLAGS_ALLOW) $(GO) build $(GO_BUILD_FLAGS) -mod=vendor -o $@ $<
+	CC="$(CC)" CGO_ENABLED="$(CGO_REQUIRED)" $(CGO_LDFLAGS_ALLOW) CGO_CFLAGS="$(CGO_CFLAGS)" CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) build $(GO_BUILD_FLAGS) $(GOFLAGS) -mod=vendor -o $@ $<
 
 captree: ../goapps/captree/captree.go CAPGOPACKAGE
-	CC="$(CC)" CGO_ENABLED="$(CGO_REQUIRED)" $(CGO_LDFLAGS_ALLOW) $(GO) build $(GO_BUILD_FLAGS) -mod=vendor -o $@ $<
+	CC="$(CC)" CGO_ENABLED="$(CGO_REQUIRED)" $(CGO_LDFLAGS_ALLOW) CGO_CFLAGS="$(CGO_CFLAGS)" CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) build $(GO_BUILD_FLAGS) $(GOFLAGS) -mod=vendor -o $@ $<
 
 captrace: ../goapps/captrace/captrace.go CAPGOPACKAGE
-	CC="$(CC)" CGO_ENABLED="$(CGO_REQUIRED)" $(CGO_LDFLAGS_ALLOW) $(GO) build $(GO_BUILD_FLAGS) -mod=vendor -o $@ $<
+	CC="$(CC)" CGO_ENABLED="$(CGO_REQUIRED)" $(CGO_LDFLAGS_ALLOW) CGO_CFLAGS="$(CGO_CFLAGS)" CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) build $(GO_BUILD_FLAGS) $(GOFLAGS) -mod=vendor -o $@ $<
 
 ok: ok.go vendor/modules.txt
-	CC="$(CC)" CGO_ENABLED="0"  $(GO) build $(GO_BUILD_FLAGS) -mod=vendor $<
+	CC="$(CC)" CGO_ENABLED="$(CGO_REQUIRED)"  $(GO) build $(GO_BUILD_FLAGS) $(GOFLAGS) -mod=vendor $<
 
 try-launching: try-launching.go CAPGOPACKAGE ok
 	CC="$(CC)" CGO_ENABLED="$(CGO_REQUIRED)" $(CGO_LDFLAGS_ALLOW) $(GO) build $(GO_BUILD_FLAGS) -mod=vendor $<