populate_sdk_base.bbclass:fix toolchain relocation issues

When run "autoreconf" in toolchain, there is an error if the host's perl's
version is not the same as the one in the SDK, the error says that the
executable perl mismatches the perl lib's version.

This is because most of the autotools' scripts use the "#!/usr/bin/perl -w"
which is host perl, but the gnu-configize uses "#! /usr/bin/env perl" which
invokes the perl wrapper in the SDK, and the wrapper will set the PERL5LIB to
the SDK which causes the mismatch. We can make all the perl scripts to use the
host perl or the SDK perl to fix this problem.

[YOCTO #3338]

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/meta/classes/populate_sdk_base.bbclass b/meta/classes/populate_sdk_base.bbclass
index b99dc75fd1..88de1e48ac 100644
--- a/meta/classes/populate_sdk_base.bbclass
+++ b/meta/classes/populate_sdk_base.bbclass
@@ -274,6 +274,13 @@ fi
 # replace ${SDKPATH} with the new prefix in all text files: configs/scripts/etc
 $SUDO_EXEC find $native_sysroot -type f -exec file '{}' \;|grep ":.*\(ASCII\|script\|source\).*text"|cut -d':' -f1|$SUDO_EXEC xargs sed -i -e "s:$DEFAULT_INSTALL_DIR:$target_sdk_dir:g"
 
+# find out all perl scripts in $native_sysroot and modify them replacing the
+# host perl with SDK perl.
+for perl_script in $($SUDO_EXEC grep "^#!.*perl" -rl $native_sysroot); do
+	$SUDO_EXEC sed -i -e "s:^#! */usr/bin/perl.*:#! /usr/bin/env perl:g" -e \
+		"s: /usr/bin/perl: /usr/bin/env perl:g" $perl_script
+done
+
 # change all symlinks pointing to ${SDKPATH}
 for l in $($SUDO_EXEC find $native_sysroot -type l); do
 	$SUDO_EXEC ln -sfn $(readlink $l|$SUDO_EXEC sed -e "s:$DEFAULT_INSTALL_DIR:$target_sdk_dir:") $l