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See crosstool-NG for lots more information.
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BSD grep does not interpret a null alteration. It complains about an empty sub-expression, e.g.: $ grep --version && grep -E '^(# |)CT_' .config grep (BSD grep) 2.5.1-FreeBSD grep: empty (sub)expression This patch replaces the null alteration with a zero or once quantifier which works with both BSD & GNU grep. $ grep --version && grep -E '^(# )?CT_' .config grep (BSD grep) 2.5.1-FreeBSD CT_CONFIGURE_has_xz=y CT_CONFIGURE_has_svn=y ... $ ggrep --version && ggrep -E '^(# )?CT_' .config ggrep (GNU grep) 2.20 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Written by Mike Haertel and others, see <http://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>. CT_CONFIGURE_has_xz=y CT_CONFIGURE_has_svn=y ... diff --git a/scripts/crosstool-NG.sh.in b/scripts/crosstool-NG.sh.in index cd65d5b..53ac552 100644 --- a/scripts/crosstool-NG.sh.in +++ b/scripts/crosstool-NG.sh.in @@ -125,7 +125,7 @@ CT_DoLog INFO "Build started ${CT_STAR_DATE_HUMAN}" # We really need to extract from ,config and not .config.2, as we # do want the kconfig's values, not our mangled config with arrays. CT_DoStep DEBUG "Dumping user-supplied crosstool-NG configuration" -CT_DoExecLog DEBUG ${grep} -E '^(# |)CT_' .config +CT_DoExecLog DEBUG ${grep} -E '^(# )?CT_' .config CT_EndStep CT_DoLog DEBUG "Unsetting and unexporting MAKEFLAGS" -- For unsubscribe information see http://sourceware.org/lists.html#faq
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