mirror of https://github.com/rkd77/elinks.git
92 lines
3.8 KiB
Plaintext
92 lines
3.8 KiB
Plaintext
Tips to obtain a very small static elinks binary
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Tips to obtain a very small static elinks binary suitable for mini
|
|
distributions
|
|
|
|
Remove config.cache (previous CC may be cached):
|
|
|
|
$ rm config.cache
|
|
|
|
Use dietlibc (http://www.fefe.de/dietlibc/) or similar stuff (uClibc, ...):
|
|
|
|
$ export CC='diet -Os gcc'
|
|
|
|
Use compilers flags to optimize for size:
|
|
|
|
$ export CFLAGS='-s -fno-inline -nostdinc -fomit-frame-pointer'
|
|
|
|
Note that if you don't use dietlibc, you definitively want to add `-Os` or
|
|
`-O2` to `CFLAGS`; GCC 2.95 does not know `-Os`, and some say `-O2` gives
|
|
smaller executables even for GCC 3.x.
|
|
|
|
[TIP]
|
|
===============================================================================
|
|
If you use these `CFLAGS` on Cygwin and you get unresolved symbols (`htons` and
|
|
suite in particular), try removing `-fno-inline` parameter.
|
|
===============================================================================
|
|
|
|
Disable some compile-time options:
|
|
|
|
------------------------------------------------------------------------------
|
|
$ ./configure --disable-ipv6 --disable-backtrace --disable-nls \
|
|
--enable-fastmem --without-zlib --without-bzlib --disable-xbel \
|
|
--without-lua --without-gnutls --without-openssl --without-x \
|
|
--enable-small --without-spidermonkey --without-gpm
|
|
------------------------------------------------------------------------------
|
|
|
|
You can disable bookmarks, globhist and more, too, if you want to.
|
|
|
|
[TIP]
|
|
.Other configure options that can reduce the size
|
|
===============================================================================
|
|
- \--disable-backtrace disables internal backtrace code.
|
|
- \--disable-nls disables i18n support.
|
|
- \--enable-fastmem disables internal `malloc()` debugging and use `alloca()`
|
|
wherever possible.
|
|
- \--enable-small forces to remove some text descriptions in options and
|
|
keybind stuff (regain 30Kb).
|
|
===============================================================================
|
|
|
|
Dependencies over external libs must be removed using the related configure
|
|
options:
|
|
`-----------------------`------------------------------------------------------
|
|
Option Description
|
|
-------------------------------------------------------------------------------
|
|
\--without-zlib removes libz dependency (compression)
|
|
\--without-bzlib removes libbz2 dependency (compression)
|
|
\--disable-xbel removes expat dependency (XBEL bookmarks support)
|
|
\--without-lua removes liblua dependency (Lua scripting)
|
|
\--without-gnutls removes libtls dependency (SSL support)
|
|
\--without-openssl removes libssl dependency (SSL support)
|
|
\--without-x removes libx11 dependency (restoring terminal title)
|
|
\--without-spidermonkey removes libjs dependency (JavaScript)
|
|
\--without-gpm removes libgpm dependency (mouse/console)
|
|
-------------------------------------------------------------------------------
|
|
|
|
It seems GCC 2.95.x do not generate as small binaries as GCC 3.2.x with same
|
|
flags.
|
|
|
|
You can use an executable compressor like UPX
|
|
link:http://upx.sourceforge.net/[].
|
|
|
|
Here are some results using gcc 2.95.3, dietlibc-0.23, and previous flags:
|
|
|
|
me$ ls -l src/elinks
|
|
-rwxr-xr-x 1 zas users 495100 Oct 20 15:53 src/elinks
|
|
me$ upx --best src/elinks
|
|
me$ ls -l src/elinks
|
|
-rwxr-xr-x 1 zas users 217946 Oct 20 15:53 src/elinks
|
|
|
|
Whow ! Around 200kb :)
|
|
|
|
[NOTE]
|
|
.Details about the `\--enable-small` configure option effects:
|
|
==============================================================================
|
|
- it disables long descriptions of options;
|
|
- it disables textual descriptions of keybinding options;
|
|
- it reduces size of some HTTP errors messages;
|
|
- it disables fastfind feature, reducing performance, but also reducing a lot
|
|
memory usage, and a bit the executable size.
|
|
==============================================================================
|