groff: replace "perl -w" with "use warnings"

The shebang's max length is usually 128 as defined in
/usr/include/linux/binfmts.h:
  #define BINPRM_BUF_SIZE 128

There would be errors when @PERL@ (hostools/perl) is longer than 128,
use '/usr/bin/env perl' can fix the problem, but '/usr/bin/env perl -w'
doesn't work:

/usr/bin/env: perl -w: No such file or directory

So replace "perl -w" with "use warnings" to make it work.

(From OE-Core rev: f3408bcf9d2710b07f5825683931e28571de130c)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/meta/recipes-extended/groff/groff_1.22.3.bb b/meta/recipes-extended/groff/groff_1.22.3.bb
index dd241f3f84..7472f59825 100644
--- a/meta/recipes-extended/groff/groff_1.22.3.bb
+++ b/meta/recipes-extended/groff/groff_1.22.3.bb
@@ -10,6 +10,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=d32239bcb673463ab874e80d47fae504"
 SRC_URI = "${GNU_MIRROR}/groff/groff-${PV}.tar.gz \
         file://groff-1.22.2-correct-man.local-install-path.patch \
         file://0001-Unset-need_charset_alias-when-building-for-musl.patch \
+        file://0001-replace-perl-w-with-use-warnings.patch \
 "
 
 SRC_URI[md5sum] = "cc825fa64bc7306a885f2fb2268d3ec5"
@@ -24,6 +25,8 @@ inherit autotools texinfo
 EXTRA_OECONF = "--without-x"
 PARALLEL_MAKE = ""
 
+CACHED_CONFIGUREVARS += "ac_cv_path_PERL='/usr/bin/env perl'"
+
 do_configure_prepend() {
         if [ "${BUILD_SYS}" != "${HOST_SYS}" ]; then
                 sed -i \