Use PKG_PROG_PKG_CONFIG for better cross-building
This should resolve the Lintian concern autotools-pkg-config-macro-not-cross-compilation-safe. See https://bugs.debian.org/884798 for more details.
This should resolve the Lintian concern autotools-pkg-config-macro-not-cross-compilation-safe. See https://bugs.debian.org/884798 for more details.