Cross-Compiled Linux From Scratch - Sysroot - Version SVN-0.0.1-20090726-ARM

Chapter 6. Installing Basic System Software

6.18. M4-1.4.13

The M4 package contains a macro processor.

6.18.1. Environment Settings

This package requires compiler variables to be set for the target in the environment. 

export CC="${CLFS_TARGET}-gcc"
export CXX="${CLFS_TARGET}-g++"
export AR="${CLFS_TARGET}-ar"
export AS="${CLFS_TARGET}-as"
export RANLIB="${CLFS_TARGET}-ranlib"
export LD="${CLFS_TARGET}-ld"
export STRIP="${CLFS_TARGET}-strip"

6.18.2. Installation of M4

Configure can not properly determine the results of the following tests: 

cat > config.cache << EOF
gl_cv_func_btowc_eof=yes
gl_cv_func_mbrtowc_incomplete_state=yes
gl_cv_func_mbrtowc_sanitycheck=yes
gl_cv_func_mbrtowc_null_arg=yes
gl_cv_func_mbrtowc_retval=yes
gl_cv_func_mbrtowc_nul_retval=yes
gl_cv_func_wcrtomb_retval=yes
gl_cv_func_wctob_works=yes
EOF

Prepare M4 for compilation: 

./configure --build=${CLFS_HOST} --host=${CLFS_TARGET} \
    --prefix=/usr --cache-file=config.cache

Compile the package: 

make

Install the package: 

make DESTDIR=${CLFS} install

6.18.3. Contents of M4

Installed program: m4

Short Descriptions

m4

copies the given files while expanding the macros that they contain. These macros are either built-in or user-defined and can take any number of arguments. Besides performing macro expansion, m4 has built-in functions for including named files, running Unix commands, performing integer arithmetic, manipulating text, recursion, etc. The m4 program can be used either as a front-end to a compiler or as a macro processor in its own right.