gpgrt-config runs emulating pkg-config.
pkg-config supports PKG_CONFIG_PATH and PKG_CONFIG_LIBDIR environment variables.
Specifically, when PKG_CONFIG_LIBDIR is empty and PKG_CONFIG_PATH is defined, gpgrt-config should search *.pc files by PKG_CONFIG_PATH, ignoring --libdir option.
Here is a possible fix:
diff --git a/src/gpgrt-config.in b/src/gpgrt-config.in index 6352384..3aaa243 100644 --- a/src/gpgrt-config.in +++ b/src/gpgrt-config.in @@ -470,7 +470,7 @@ while test $# -gt 0; do esac done -if [ x"${PKG_CONFIG_LIBDIR:+set}" = xset -a -z "$PKG_CONFIG_LIBDIR" ]; then +if env | grep '^PKG_CONFIG_LIBDIR=$' >/dev/null 2>&1; then # The variable set as empty, we use PKG_CONFIG_PATH in this case, # ignoring --libdir option if [ -z "$PKG_CONFIG_PATH" ]; then
If we could assume Bash, we can use test with -v, but it's not portable.
Also, we can't use printenv, it's not POSIX command.