From ca10caa502f971f90d8c041aa2476de54ef0ce2b Mon Sep 17 00:00:00 2001
From: Eneas U de Queiroz <cotequeiroz@gmail.com>
Date: Tue, 20 Jul 2021 16:41:11 -0300
Subject: openwrt: make relocatable, search resources relative to STAGING_DIR

This was originally commited to openwrt by Jo-Philipp Wich
<jow@openwrt.org>.

(adjusted to v2.4.6)
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>

--- a/libtoolize.in
+++ b/libtoolize.in
@@ -40,11 +40,18 @@
 
 : ${AUTOCONF="autoconf"}
 : ${AUTOMAKE="automake"}
-: ${EGREP="@EGREP@"}
-: ${FGREP="@FGREP@"}
-: ${GREP="@GREP@"}
 : ${LN_S="@LN_S@"}
-: ${SED="@SED@"}
+if test -n "$STAGING_DIR"; then
+	: ${EGREP="$STAGING_DIR/../host/bin/grep -E"}
+	: ${FGREP="$STAGING_DIR/../host/bin/grep -F"}
+	: ${GREP="$STAGING_DIR/../host/bin/grep"}
+	: ${SED="$STAGING_DIR/../host/bin/sed"}
+else
+	: ${EGREP="@EGREP@"}
+	: ${FGREP="@FGREP@"}
+	: ${GREP="@GREP@"}
+	: ${SED="@SED@"}
+fi
 
 
 ## -------------------------- ##
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -929,9 +929,8 @@ dnl AC_DEFUN([AC_LIBTOOL_RC], [])
 # ----------------
 m4_defun([_LT_TAG_COMPILER],
 [AC_REQUIRE([AC_PROG_CC])dnl
-
 _LT_DECL([LTCC], [CC], [1], [A C compiler])dnl
-_LT_DECL([LTCFLAGS], [CFLAGS], [1], [LTCC compiler flags])dnl
+_LT_DECL([LTCFLAGS], [CFLAGS], ["-O2 -I\${STAGING_DIR:-$STAGING_DIR}/../host/include"], [LTCC compiler flags])dnl
 _LT_TAGDECL([CC], [compiler], [1], [A language specific compiler])dnl
 _LT_TAGDECL([with_gcc], [GCC], [0], [Is the compiler the GNU compiler?])dnl
 
@@ -8160,9 +8159,9 @@ m4_defun([_LT_DECL_EGREP],
 [AC_REQUIRE([AC_PROG_EGREP])dnl
 AC_REQUIRE([AC_PROG_FGREP])dnl
 test -z "$GREP" && GREP=grep
-_LT_DECL([], [GREP], [1], [A grep program that handles long lines])
-_LT_DECL([], [EGREP], [1], [An ERE matcher])
-_LT_DECL([], [FGREP], [1], [A literal string matcher])
+_LT_DECL([], [GREP], ["\${STAGING_DIR:-$STAGING_DIR}/../host/bin/grep"], [A grep program that handles long lines])
+_LT_DECL([], [EGREP], ["\${STAGING_DIR:-$STAGING_DIR}/../host/bin/grep -E"], [An ERE matcher])
+_LT_DECL([], [FGREP], ["\${STAGING_DIR:-$STAGING_DIR}/../host/bin/grep -F"], [A literal string matcher])
 dnl Non-bleeding-edge autoconf doesn't subst GREP, so do it here too
 AC_SUBST([GREP])
 ])
@@ -8195,9 +8194,8 @@ AC_SUBST([DLLTOOL])
 # as few characters as possible.  Prefer GNU sed if found.
 m4_defun([_LT_DECL_SED],
 [AC_PROG_SED
-test -z "$SED" && SED=sed
 Xsed="$SED -e 1s/^X//"
-_LT_DECL([], [SED], [1], [A sed program that does not truncate output])
+_LT_DECL([], [SED], ["\${STAGING_DIR:-$STAGING_DIR}/../host/bin/sed"], [A sed program that does not truncate output])
 _LT_DECL([], [Xsed], ["\$SED -e 1s/^X//"],
     [Sed that helps us avoid accidentally triggering echo(1) options like -n])
 ])# _LT_DECL_SED