fix(r/adbcflightsql): fix warnings on R CMD check for Go-based drivers

Author: eitsupi

.github/workflows/r-basic.yml

@@ -61,6 +61,6 @@ jobs:
       pkg: ${{ matrix.pkg }}
       # For the r-basic check (that runs on many PRs), just check ERRORs
       # (e.g., build failure, test failure)
-      error-on: error
+      error-on: warning
     secrets:
       SNOWFLAKE_URI: ${{ secrets.SNOWFLAKE_URI }}

r/adbcflightsql/src/Makevars.in

@@ -23,9 +23,12 @@ CGO_CXX = @cxx@
 CGO_CFLAGS = $(ALL_CPPFLAGS)
 GOMAXPROCS = @nproc@
 
-.PHONY: all gostatic
-all: $(SHLIB)
+.PHONY: all purify gostatic
+all: purify
 $(SHLIB): gostatic
 
+purify: $(SHLIB)
+	rm -Rf "$(CURDIR)/go/libadbc_driver_flightsql.a"
+
 gostatic:
 		(cd "$(CURDIR)/go/adbc"; GOMAXPROCS=$(GOMAXPROCS) GOPATH="$(CURDIR)/.go-path" GOCACHE="$(CURDIR)/.go-cache" GOFLAGS=-modcacherw CC="$(CGO_CC)" CXX="$(CGO_CXX)" CGO_CFLAGS="$(CGO_CFLAGS)" CGO_LDFLAGS="$(PKG_LIBS)" "@gobin@" build -v -tags driverlib -o $(CURDIR)/go/libadbc_driver_flightsql.a -buildmode=c-archive "./pkg/flightsql")