Installed
programs: flex and lex
Installed
library: libfl.a
The Flex package contains a utility for generating programs that recognize patterns in text.
Make sure that Flex doesn't try to include headers from /usr/include.
cp -v Makefile.in{,.orig}
sed "s/-I@includedir@//g" Makefile.in.orig > Makefile.in
Prepare Flex for compilation:
./configure --build=${CLFS_HOST} --host=${CLFS_TARGET} \
--prefix=/usr
Compile the package:
make
Install the package:
make DESTDIR=${CLFS} install
There are some packages that expect to find the lex library in /usr/lib. Create a symlink to account for this:
ln -sv libfl.a ${CLFS}/usr/lib/libl.a
A few programs do not know about flex yet and try to run its predecessor, lex. To support those programs, create a wrapper script named lex that calls flex in lex emulation mode:
cat > ${CLFS}/usr/bin/lex << "EOF"
#!/bin/sh
# Begin /usr/bin/lex
exec /usr/bin/flex -l "$@"
# End /usr/bin/lex
EOF
chmod -v 755 ${CLFS}/usr/bin/lex