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Recently I needed to trim storage space on an embedded distro which has X. X depend on cpp which is ~8MB in size as shipped in Debian, so the idea was to remove cpp and use `tcc -E` instead where appropriate. I've done this with the following 'hack' put inplace of /usr/bin/cpp : #!/bin/sh -e TCC=/home/kirr/local/tcc/bin/tcc last="${!#}" # hack to distinguish between '... -D...' and '... file' if test -r "$last"; then exec $TCC -E "$@" else exec $TCC -E "$@" - fi But the problem turned out to be in `tcc -E` inability to preserve spaces between tokens. So e.g. the following ~/.Xresources XTerm*VT100*foreground: black ... got translated to XTerm * VT100 * foreground : black which is bad, bacause now X don't understand it. Below is a newbie "fix" for the problem. It still does not preserve spaces on macro expansion, but since the fix cures original problem, I think it is at least one step forward. Signed-off-by: Kirill Smelkov <kirr@landau.phys.spbu.ru> |
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examples | ||
win32 | ||
.cvsignore | ||
alloca86-bt.S | ||
alloca86.S | ||
arm-gen.c | ||
asmtest.S | ||
bcheck.c | ||
boundtest.c | ||
c67-gen.c | ||
Changelog | ||
coff.h | ||
configure | ||
COPYING | ||
elf.h | ||
float.h | ||
gcctestsuite.sh | ||
i386-asm.c | ||
i386-asm.h | ||
i386-gen.c | ||
il-gen.c | ||
il-opcodes.h | ||
libtcc1.c | ||
libtcc_test.c | ||
libtcc.h | ||
Makefile | ||
README | ||
stab.def | ||
stab.h | ||
stdarg.h | ||
stdbool.h | ||
stddef.h | ||
tcc-doc.texi | ||
tcc.c | ||
tccasm.c | ||
tcccoff.c | ||
tccelf.c | ||
tcclib.h | ||
tccpe.c | ||
tcctest.c | ||
tcctok.h | ||
texi2pod.pl | ||
TODO | ||
varargs.h | ||
VERSION | ||
x86_64-gen.c |
Tiny C Compiler - C Scripting Everywhere - The Smallest ANSI C compiler ----------------------------------------------------------------------- Features: -------- - SMALL! You can compile and execute C code everywhere, for example on rescue disks. - FAST! tcc generates optimized x86 code. No byte code overhead. Compile, assemble and link about 7 times faster than 'gcc -O0'. - UNLIMITED! Any C dynamic library can be used directly. TCC is heading torward full ISOC99 compliance. TCC can of course compile itself. - SAFE! tcc includes an optional memory and bound checker. Bound checked code can be mixed freely with standard code. - Compile and execute C source directly. No linking or assembly necessary. Full C preprocessor included. - C script supported : just add '#!/usr/local/bin/tcc -run' at the first line of your C source, and execute it directly from the command line. Documentation: ------------- 1) Installation on a i386 Linux host (for Windows read win32/readme.txt) ./configure make make test make install By default, tcc is installed in /usr/local/bin. ./configure --help shows configuration options. 2) Introduction We assume here that you know ANSI C. Look at the example ex1.c to know what the programs look like. The include file <tcclib.h> can be used if you want a small basic libc include support (especially useful for floppy disks). Of course, you can also use standard headers, although they are slower to compile. You can begin your C script with '#!/usr/local/bin/tcc -run' on the first line and set its execute bits (chmod a+x your_script). Then, you can launch the C code as a shell or perl script :-) The command line arguments are put in 'argc' and 'argv' of the main functions, as in ANSI C. 3) Examples ex1.c: simplest example (hello world). Can also be launched directly as a script: './ex1.c'. ex2.c: more complicated example: find a number with the four operations given a list of numbers (benchmark). ex3.c: compute fibonacci numbers (benchmark). ex4.c: more complicated: X11 program. Very complicated test in fact because standard headers are being used ! ex5.c: 'hello world' with standard glibc headers. tcc.c: TCC can of course compile itself. Used to check the code generator. tcctest.c: auto test for TCC which tests many subtle possible bugs. Used when doing 'make test'. 4) Full Documentation Please read tcc-doc.html to have all the features of TCC. Additional information is available for the Windows port in win32/readme.txt. License: ------- TCC is distributed under the GNU Lesser General Public License (see COPYING file). Fabrice Bellard.