cross-native2: set CGO_CFLAGS, CGO_LDFLAGS

Cross compiling go programs with cross-native2 fails for armv7, riscv64 and armhf unless we use CGO_ENABLED=1 in the APKBUILD (see related aports issue).

Add --sysroot to CGO_CFLAGS, so cgo can find the includes and doesn't fail with:

go build -buildmode=pie -modcacherw -trimpath -buildvcs=false -ldflags "-s -w -X main.Version=2.6.1" -o mkinitfs ./cmd/mkinitfs
# runtime/cgo
_cgo_export.c:3:10: fatal error: stdlib.h: No such file or directory

Add it to LDFLAGS too for linking against libraries from the sysroot.

Related: https://gitlab.alpinelinux.org/alpine/aports/-/issues/15809

Related: https://stackoverflow.com/a/38835938

mentioned in merge request pmaports!6297 (merged)

approved this merge request

added 1 commit

• 06bd8d98 - cross-native2: set CGO_CFLAGS, CGO_LDFLAGS (MR 2565)

Compare with previous version

merged