Beyond Linux® From Scratch - Version 8.1

Chapter 10. Graphics and Font Libraries

libraw-0.18.2

Introduction to libraw

Libraw is a library for reading RAW files obtained from digital photo cameras (CRW/CR2, NEF, RAF, DNG, and others).

This package is known to build and work properly using an LFS-8.1 platform.

Package Information

libraw Dependencies

Recommended

libjpeg-turbo-1.5.2, JasPer-2.0.12, and Little CMS-2.8

Optional

LibRaw-demosaic-pack-GPL2 and LibRaw-demosaic-pack-GPL3

User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/libraw

Installation of libraw

Install libraw by running the following commands: 

./configure --prefix=/usr    \
            --enable-jpeg    \
            --enable-jasper  \
            --enable-lcms    \
            --disable-static \
            --docdir=/usr/share/doc/libraw-0.18.2 &&
make

This package does not come with a test suite.

Now, as the root user: 

make install

Command Explanations

CXX="g++ -Wno-narrowing": This environment variable disables a warning that prevents the package from compiling.

--enable-jpeg: This switch enables support for jpeg. Remove if you don't have libjpeg-turbo-1.5.2 installed.

--enable-jasper: This switch enables support for jasper. Remove if you don't have JasPer-2.0.12 installed.

--enable-lcms: This switch enables support for Little CMS2. Remove if you don't have Little CMS-2.8 installed.

--disable-static: This switch prevents installation of static versions of the libraries.

Contents

[Note]

Note

All the installed programs are examples of libraw use.

Installed Programs: 4channels, dcraw_emu, dcraw_half, half_mt, mem_image, multirender_test, postprocessing_benchmark, raw-identify, simple_dcraw, and unprocessed_raw
Installed Library: libraw.so and libraw_r.so
Installed Directories: /usr/include/libraw and /usr/share/doc/libraw-0.18.2

Short Descriptions

4channels

generates four TIFF files from RAW data, one file per channel.

dcraw_half

emulates "dcraw -h" (see DCRAW manpage).

mem_image

emulates "dcraw [-4] [-6] [-e]" (see DCRAW manpage).

postprocessing_benchmark

creates eight different renderings from one source file. The first and fourth one should be identical.

simple_dcraw

emulates call to "dcraw [-D] [-T] [-v] [-e] [-4]" (see DCRAW manpage).

dcraw_emu

is an almost complete dcraw emulator (see DCRAW manpage).

half_mt

emulates call to "dcraw -h [-w] [-a] [-v]" (see DCRAW manpage).

multirender_test

creates eight different renderings from one source file. The first and fourth one should be identical.

raw-identify

emulates call to "dcraw -i [-v]" (see DCRAW manpage).

unprocessed_raw

generates unprocessed raw image: with masked pixels and without black subtraction.

Last updated on 2017-08-26 21:18:25 -0700