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From: Richard Purdie <richard.purdie@linuxfoundation.org>
Subject: [PATCH 06/12] libtool.m4: Handle "/" as a sysroot correctly
Update libtool.m4 to resolve a problem with lt_sysroot not being properly
updated if the option '--with[-libtool]-sysroot' is not provided when
running the 'configure' script for a package so that "/" as a sysroot
is handled correctly by libtool.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Upstream Report:
http://lists.gnu.org/archive/html/bug-libtool/2013-09/msg00005.html
Upstream-Status: Submitted [https://lists.gnu.org/archive/html/libtool-patches/2021-10/msg00018.html]
---
diff --git a/m4/libtool.m4 b/m4/libtool.m4
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -1225,16 +1225,21 @@ dnl lt_sysroot will always be passed unquoted. We quote it here
dnl in case the user passed a directory name.
lt_sysroot=
case $with_libtool_sysroot in #(
- yes)
+ no)
if test yes = "$GCC"; then
lt_sysroot=`$CC --print-sysroot 2>/dev/null`
+ # Treat "/" the same a an unset sysroot. It seems to be more
+ # compatible across host platforms that way!?
+ if test "$lt_sysroot" = /; then
+ lt_sysroot=
+ fi
fi
;; #(
+ yes|''|/)
+ ;; #(
/*)
lt_sysroot=`echo "$with_libtool_sysroot" | sed -e "$sed_quote_subst"`
;; #(
- no|'')
- ;; #(
*)
AC_MSG_RESULT([$with_libtool_sysroot])
AC_MSG_ERROR([The sysroot must be an absolute path.])
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