void-packages/common/hooks/pre-configure/gnu-configure-asneeded.sh

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# This hook enables ld(1) --as-needed in gnu-configure packages.
hook() {
: ${configure_script:=./configure}
if [ ! -f ${configure_script} ]; then
return 0
fi
# http://lists.gnu.org/archive/html/libtool-patches/2004-06/msg00002.html
if [ -z "$broken_as_needed" -a "$build_style" = "gnu-configure" ]; then
sed -i "s/^\([ \t]*tmp_sharedflag\)='-shared'/\1='-shared -Wl,--as-needed'/" ${configure_script}
fi
}