tools: add gnulib source

By having a local copy of gnulib, we can:
import the latest macro fixes into any package,
get rid of some statically stored macros that were otherwise missing,
bootstrap GNU tools with the latest relevant source
without having to wait for a release or rely on git submodules,
and possibly more...

The patch assists in bootstrapping by ignoring
the building of po files using gettext,
and also to allow a user-defined path to a program
to include parameters.

Signed-off-by: Michael Pratt <mcpratt@pm.me>

3 files changed, 80 insertions, 0 deletions

diff --git a/tools/Makefile b/tools/Makefile
index 7e8fbad107..3bf94827cf 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -45,6 +45,7 @@ tools-y += findutils
 tools-y += firmware-utils
 tools-y += flex
 tools-y += gengetopt
+tools-y += gnulib
 tools-y += libressl
 tools-y += libtool
 tools-y += lzma
diff --git a/tools/gnulib/Makefile b/tools/gnulib/Makefile
new file mode 100644
index 0000000000..c5b7e78c54
--- /dev/null
+++ b/tools/gnulib/Makefile
@@ -0,0 +1,25 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=gnulib
+PKG_CPE_ID:=cpe:/a:gnu:$(PKG_NAME)
+PKG_VERSION:=f9a4ee73c3e7b544f640d0d04b55983d3a7b894e# # master
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://git.savannah.gnu.org/cgit/$(PKG_NAME).git/snapshot
+PKG_HASH:=514716d58987a9c0de0d69fb22d42bcd19edf80eed099882a004ff162060f1a8
+
+include $(INCLUDE_DIR)/host-build.mk
+
+define Host/Configure
+endef
+
+define Host/Install
+	$(INSTALL_DIR) $(1)/share/gnulib
+	$(CP) $(HOST_BUILD_DIR)/* $(1)/share/gnulib/
+endef
+
+define Host/Clean
+	rm -rf $(STAGING_DIR_HOST)/share/gnulib
+endef
+
+$(eval $(call HostBuild))
diff --git a/tools/gnulib/patches/000-bootstrap.patch b/tools/gnulib/patches/000-bootstrap.patch
new file mode 100644
index 0000000000..40ed41125c
--- /dev/null
+++ b/tools/gnulib/patches/000-bootstrap.patch
@@ -0,0 +1,54 @@
+--- a/build-aux/bootstrap
++++ b/build-aux/bootstrap
+@@ -237,14 +237,14 @@ test -r "$conffile" && . "$conffile"
+ 
+ check_exists() {
+   if test "$1" = "--verbose"; then
+-    ($2 --version </dev/null) >/dev/null 2>&1
++    ($2 $3 $4 --version </dev/null) >/dev/null 2>&1
+     if test $? -ge 126; then
+       # If not found, run with diagnostics as one may be
+       # presented with env variables to set to find the right version
+-      ($2 --version </dev/null)
++      ($2 $3 $4 --version </dev/null)
+     fi
+   else
+-    ($1 --version </dev/null) >/dev/null 2>&1
++    ($@ --version </dev/null) >/dev/null 2>&1
+   fi
+ 
+   test $? -lt 126
+@@ -309,7 +309,7 @@ p
+ q'
+ 
+ get_version() {
+-  app=$1
++  app="$@"
+ 
+   $app --version >/dev/null 2>&1 || { $app --version; return 1; }
+ 
+@@ -366,13 +366,13 @@ check_versions() {
+     if [ "$req_ver" = "-" ]; then
+       # Merely require app to exist; not all prereq apps are well-behaved
+       # so we have to rely on $? rather than get_version.
+-      if ! check_exists --verbose $app; then
++      if ! check_exists --verbose "$app"; then
+         warn_ "Error: '$app' not found"
+         ret=1
+       fi
+     else
+       # Require app to produce a new enough version string.
+-      inst_ver=$(get_version $app)
++      inst_ver=$(get_version "$app")
+       if [ ! "$inst_ver" ]; then
+         warn_ "Error: '$app' not found"
+         ret=1
+@@ -1135,7 +1135,7 @@ autogen()
+   # two just-pre-run programs.
+ 
+   # Import from gettext.
+-  with_gettext=yes
++  with_gettext=no
+   grep '^[	 ]*AM_GNU_GETTEXT_VERSION(' configure.ac >/dev/null || \
+       with_gettext=no
+