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Linux From Scratch - Version 7.0

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6.20. Ncurses-5.9

The Ncurses package contains libraries for terminal-independent handling of character screens.

Approximate build time: 0.8 SBU

Required disk space: 35 MB

6.20.1. Installation of Ncurses

Prepare Ncurses for compilation:

./configure --prefix=/usr --with-shared --without-debug --enable-widec

The meaning of the configure option:

--enable-widec

This switch causes wide-character libraries (e.g., libncursesw.so.5.9) to be built instead of normal ones

(e.g., libncurses.so.5.9). These wide-character libraries are usable in both multibyte and traditional 8-

bit locales, while normal libraries work properly only in 8-bit locales. Wide-character and normal libraries are

source-compatible, but not binary-compatible.

Compile the package:

make

This package has a test suite, but it can only be run after the package has been installed. The tests reside in the test/

directory. See the README file in that directory for further details.

Install the package:

make install

Move the shared libraries to the /lib directory, where they are expected to reside:

mv -v /usr/lib/libncursesw.so.5* /lib

Because the libraries have been moved, one symlink points to a non-existent file. Recreate it:

ln -sfv ../../lib/libncursesw.so.5 /usr/lib/libncursesw.so

Many applications still expect the linker to be able to find non-wide-character Ncurses libraries. Trick such

applications into linking with wide-character libraries by means of symlinks and linker scripts:

for lib in ncurses form panel menu ; do \

rm -vf /usr/lib/lib${lib}.so ; \

echo "INPUT(-l${lib}w)" >/usr/lib/lib${lib}.so ; \

ln -sfv lib${lib}w.a /usr/lib/lib${lib}.a ; \

done

ln -sfv libncurses++w.a /usr/lib/libncurses++.a

Finally, make sure that old applications that look for -lcurses at build time are still buildable:

rm -vf /usr/lib/libcursesw.so

echo "INPUT(-lncursesw)" >/usr/lib/libcursesw.so

ln -sfv libncurses.so /usr/lib/libcurses.so

ln -sfv libncursesw.a /usr/lib/libcursesw.a

ln -sfv libncurses.a /usr/lib/libcurses.a

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MTD 248-645A Manual de usuario Pagina 133