On some build systems the old automake macro AM_PATH_GPG_ERROR doesn't work because the binary gpg-error-config no longer exists. As a gpg-error.pc file is available, let's switch to this more contemporary approach to determine the gpg-error build flags.
Use pkgconf for gpg-error build flags
On some build systems the old automake macro AM_PATH_GPG_ERROR doesn't work
because the binary gpg-error-config no longer exists. As a gpg-error.pc file is
available, let's switch to this more contemporary approach to determine the
gpg-error build flags.