xtables-addons: build: fix configure compatiblity with POSIX shells

[openwrt/svn-archive/archive.git] / package / network / utils / xtables-addons / patches / 001-build-fix-configure-compatiblity-with-POSIX-shells.patch

diff --git a/package/network/utils/xtables-addons/patches/001-build-fix-configure-compatiblity-with-POSIX-shells.patch b/package/network/utils/xtables-addons/patches/001-build-fix-configure-compatiblity-with-POSIX-shells.patch
new file mode 100644 (file)
index 0000000..e0b11b5
--- /dev/null
+++ b/package/network/utils/xtables-addons/patches/001-build-fix-configure-compatiblity-with-POSIX-shells.patch
@@ -0,0 +1,51 @@
+From f07a0a5cb8b3c5e1aee8b30c7fa21ccfbf24a95a Mon Sep 17 00:00:00 2001
+Message-Id: <f07a0a5cb8b3c5e1aee8b30c7fa21ccfbf24a95a.1459880505.git.mschiffer@universe-factory.net>
+From: Matthias Schiffer <mschiffer@universe-factory.net>
+Date: Fri, 1 Apr 2016 22:24:00 +0200
+Subject: [PATCH] build: fix configure compatiblity with POSIX shells
+
+The kernel version detection code uses some bashisms, which makes the build
+fail on Debian systems where /bin/sh links to dash. Replace with POSIX-
+conforming commands at the cost of requiring awk.
+---
+ configure.ac | 24 +++++++++---------------
+ 1 file changed, 9 insertions(+), 15 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index 82a1355..5a5ea57 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -44,21 +44,15 @@ regular_CFLAGS="-Wall -Waggregate-return -Wmissing-declarations \
+ 
+ if test -n "$kbuilddir"; then
+       AC_MSG_CHECKING([kernel version that we will build against])
+-      krel="$(make -sC "$kbuilddir" M=$PWD kernelrelease)";
+-      kmajor="${krel%%[[^0-9]]*}";
+-      kmajor="$(($kmajor+0))";
+-      krel="${krel:${#kmajor}}";
+-      krel="${krel#.}";
+-      kminor="${krel%%[[^0-9]]*}";
+-      kminor="$(($kminor+0))";
+-      krel="${krel:${#kminor}}";
+-      krel="${krel#.}";
+-      kmicro="${krel%%[[^0-9]]*}";
+-      kmicro="$(($kmicro+0))";
+-      krel="${krel:${#kmicro}}";
+-      krel="${krel#.}";
+-      kstable="${krel%%[[^0-9]]*}";
+-      kstable="$(($kstable+0))";
++      krel="$(make -sC "$kbuilddir" M=$PWD kernelrelease | $AWK -v 'FS=[[^0-9.]]' '{print $1; exit}')";
++      save_IFS=$IFS;
++      IFS='.';
++      set x $krel;
++      IFS=$save_IFS;
++      kmajor="$(($2+0))";
++      kminor="$(($3+0))";
++      kmicro="$(($4+0))";
++      kstable="$(($5+0))";
+       if test -z "$kmajor" -o -z "$kminor" -o -z "$kmicro"; then
+               echo "WARNING: Version detection did not succeed. Continue at own luck.";
+       else
+-- 
+2.8.0
+