geekmaster's simple guide to tcc (tinycc)

[geekmaster]

When I use "tcc-static" on my kindle, while doing a static build, I get this:

[root@kindle us]# tccmake parmtest -static
tcc: error: undefined symbol 'exit'
tcc: error: undefined symbol 'printf'

What do I need to link to it? (No time to RTFM the KeK stuff right now)

[twobob]

@NuPogodi

The long and the short of it is.

No, not without effort. HTH

[knc1]

Originally Posted by geekmaster

When I use "tcc-static" on my kindle, while doing a static build, I get this:

[root@kindle us]# tccmake parmtest -static
tcc: error: undefined symbol 'exit'
tcc: error: undefined symbol 'printf'

What do I need to link to it? (No time to RTFM the KeK stuff right now)

Using tcc-repo-top:

Well, printf is easy, <stdio.h>
One of the ones that at least tcc-dynamic mishandles (it can't find stddef.h any longer).

Not sure about the "exit" one.
The library symbol names are things like _at_exit and _fini but maybe there is (or should be) an 'exit'.

Does tcc do:
tcc -E
?
Maybe that would help track it down.

[knc1]

gcc doesn't like 'exit' either, try: 'return 0'

[geekmaster]

Originally Posted by knc1

gcc doesn't like 'exit' either, try: 'return 0'

Those errors were from the program posted above by NuPogodi when compiled with -static, which has "return 0". Apparently that calls an exit function. I changed it to include <stdio.h> instead of "stdio.h", and to print argc (and reformatted it).

Leaving out -static gets no errors, but creates a file that is not recognized as executable on the kindle, and hexdump shows that it references uclibc.

The tcc I got from lrizzo ALSO has those link problems with -static, so it may be unrelated to how it was built. Leaving out -static results in an executable program, but it gets a large negative argc value.

parmtest.c:

PHP Code:

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv) {
    int i;
    printf ("argc=%d\n", argc);
    printf ("argv[0]=(%s)\n", argv[0]);
    for (i=1;i<5;i++) printf("argv[%d]=(%s)\n",i,argv[i]);
    if (argc<2) printf("No args\n");
    return 0;
} 


[root@kindle tcc]# ./tcc-knc1 -E
tcc version 0.9.25 - Tiny C Compiler - Copyright (C) 2001-2006 Fabrice Bellard
Usage: tcc [options...] [-o outfile] [-c] infile(s)...
       tcc [options...] -run infile [arguments...]
General options:
  -v          display current version, increase verbosity
  -c          compile only - generate an object file
  -o outfile  set output filename
  -Bdir       set tcc internal library and include path
  -bench      output compilation statistics
  -run        run compiled source
  -fflag      set or reset (with 'no-' prefix) 'flag' (see man page)
  -Wwarning   set or reset (with 'no-' prefix) 'warning' (see man page)
  -w          disable all warnings
Preprocessor options:
  -E          preprocess only
  -Idir       add include path 'dir'
  -Dsym[=val] define 'sym' with value 'val'
  -Usym       undefine 'sym'
Linker options:
  -Ldir       add library path 'dir'
  -llib       link with dynamic or static library 'lib'
  -pthread    link with -lpthread and -D_REENTRANT (POSIX Linux)
  -shared     generate a shared library
  -soname     set name for shared library to be used at runtime
  -static     static linking
  -rdynamic   export all global symbols to dynamic linker
  -r          generate (relocatable) object file
Debugger options:
  -g          generate runtime debug info
  -bt N       show N callers in stack traces
Misc options:
  -MD         generate target dependencies for make
  -MF depfile put generated dependencies here
[root@kindle tcc]#

[root@kindle tcc]# ./tcc-lrizzo -E
tcc version 0.9.25 - Tiny C Compiler - Copyright (C) 2001-2006 Fabrice Bellard
usage: tcc [-v] [-c] [-o outfile] [-Bdir] [-bench] [-Idir] [-Dsym[=val]] [-Usym]
           [-Wwarn] [-g] [-b] [-bt N] [-Ldir] [-llib] [-shared] [-soname name]
           [-static] [infile1 infile2...] [-run infile args...]

General options:
  -v          display current version, increase verbosity
  -c          compile only - generate an object file
  -o outfile  set output filename
  -Bdir       set tcc internal library path
  -bench      output compilation statistics
  -run        run compiled source
  -fflag      set or reset (with 'no-' prefix) 'flag' (see man page)
  -Wwarning   set or reset (with 'no-' prefix) 'warning' (see man page)
  -w          disable all warnings
Preprocessor options:
  -E          preprocess only
  -Idir       add include path 'dir'
  -include f  #include file 'f' before everything else
  -Dsym[=val] define 'sym' with value 'val'
  -Usym       undefine 'sym'
  -M          generate include list. Implies -E
  -dM         generate macros list. Implies -E
  -MT file    use 'file' as target for -M.
Linker options:
  -Ldir       add library path 'dir'
  -llib       link with dynamic or static library 'lib'
  -shared     generate a shared library
  -soname     set name for shared library to be used at runtime
  -static     static linking
  -rdynamic   export all global symbols to dynamic linker
  -r          generate (relocatable) object file
Debugger options:
  -g          generate runtime debug info
  -bt N       show N callers in stack traces
Ignored options (for gcc compatibility):
  -std=X      
  -MD name
  -MP
  -isystem dir
[root@kindle tcc]#

I am curious why they output different usage, but the same version number. And lrizzo's build has more preprocessor options.

[knc1]

Originally Posted by geekmaster

I am curious why they output different usage, but the same version number. And lrizzo's build has more preprocessor options.

Because I didn't think to check the Makefile version number before I built it.
It is really 0.9.26-prerelease not the reported 0.9.25

Usually, things in git repos have the makefile "EXTRA_VERSION" thing set to the commit id of where it is pulled from (head in this case).

This one did not do it that way.
I did mention it (somewhere) but never fixed it and rebuilt it.
Not after I found that the Makefile was not its only problem enhancement.

[geekmaster]

If somebody finds a better tcc with which to update the package in the first post, please provide it or a link to it. I looked multiple times, but only found dead links to ARM binaries. I also tried building it from source (more that once) without success. I really want a static build that will work on all the kindles without the funky fixes that tccmake has to do to make the kindle libraries work. I think a static tcc would not be overly large.

[nasser]

Recently tried this on my kindles.
Everything works fine.
Only... Geekmaster's e-ink demo program crashes with a segfault on PW1, though it works OK on PW3 and KT3.

[Amias]

hello!
Does #include "header.h" works in tcc?