- if { if (LC_ALL=C find --version) 2>/dev/null | grep GNU >/dev/null; then \
- LC_ALL=C find -L $(top_srcdir) -maxdepth 1 -type f -size -10000000c -exec grep 'GNU @PACKAGE@' /dev/null '{}' ';' 2>/dev/null; \
- else \
- LC_ALL=C grep 'GNU @PACKAGE@' $(top_srcdir)/* 2>/dev/null; \
- fi; \
- } | grep -v 'libtool:' >/dev/null; then \
- package_gnu='GNU '; \
+ package_gnu="$(PACKAGE_GNU)"; \
+ test -n "$$package_gnu" || { \
+ if { if (LC_ALL=C find --version) 2>/dev/null | grep GNU >/dev/null; then \
+ LC_ALL=C find -L $(top_srcdir) -maxdepth 1 -type f \
+ -size -10000000c -exec grep 'GNU @PACKAGE@' \
+ /dev/null '{}' ';' 2>/dev/null; \
+ else \
+ LC_ALL=C grep 'GNU @PACKAGE@' $(top_srcdir)/* 2>/dev/null; \
+ fi; \
+ } | grep -v 'libtool:' >/dev/null; then \
+ package_gnu=yes; \
+ else \
+ package_gnu=no; \
+ fi; \
+ }; \
+ if test "$$package_gnu" = "yes"; then \
+ package_prefix='GNU '; \