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source $stdenv/setup
# Wrap the given `aclocal' program, appending extra `-I' flags
# corresponding to the directories listed in $ACLOCAL_PATH. (Note
# that `wrapProgram' can't be used for that purpose since it can only
# prepend flags, not append them.)
wrapAclocal() {
local program="$1"
local wrapped="$(dirname $program)/.$(basename $program)-wrapped"
mv "$program" "$wrapped"
cat > "$program"<<EOF
#! $SHELL -e
unset extraFlagsArray
declare -a extraFlagsArray
oldIFS=\$IFS
IFS=:
for dir in \$ACLOCAL_PATH; do
if test -n "\$dir" -a -d "\$dir"; then
extraFlagsArray=("\${extraFlagsArray[@]}" "-I" "\$dir")
fi
done
IFS=\$oldIFS
exec "$wrapped" "\$@" "\${extraFlagsArray[@]}"
EOF
chmod +x "$program"
}
postInstall() {
# Create a wrapper around `aclocal' that converts every element in
# `ACLOCAL_PATH' into a `-I dir' option. This way `aclocal'
# becomes modular; M4 macros do not need to be stored in a single
# global directory, while callers of `aclocal' do not need to pass
# `-I' options explicitly.
for prog in $out/bin/aclocal*; do
wrapAclocal "$prog"
done
ln -s aclocal-1.11 $out/share/aclocal
ln -s automake-1.11 $out/share/automake
}
genericBuild
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