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Tiny CC - Tiny C compiler, use it to build extremely small binaries, attached is an example project.

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Vortex

Extremely Active Member

Group: Moderators
Posts: 140
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Joined: 13-May 04

Hi friends,

Here is an example project created with the Tiny C Compiler. This tool creates very small C executables :

http://fabrice.bellard.free.fr/tcc

Attached File ( Number of downloads: 236 )


akyprian
Administrator Group: Admins Posts: 2307 Member No.: 1 Joined: 12-May 04	Thanks Vortex for sharing

Vortex

Extremely Active Member

Group: Moderators
Posts: 140
Member No.: 8
Joined: 13-May 04

libtcc1.a, the C runtime startup library supplied with TinyCC has two entry points _start and _winstart for console and GUI applications respectively. The compiler emits ELF object files so I decided to translate my own tiny C runtime startup modules to C modules with inline assembly. TinyCC accepts only the AT&T syntax to write inline assembly. Unfortunately, the compiler ignores the __declspec(naked) statement disabling the standard prologue\epilogue code. The solution was to patch the object modules to remove the overhead. Without removing the prologue\epilogue code, I could not terminate the modules with the ExitProcess function. Finally, I was able to eliminate the msvcrt.dll dependency and the size of the demo executable hello_win.exe decreased from 3584 bytes to 3072 bytes :

CODE

\tcc\tcc\tcc -ID:\tcc\include\winapi -ID:\tcc\include -L..\lib -lkernel32 -luser32 -lgdi32 hello_win.c ..\crt0ELF\crt0ELF.a -o hello_win.exe

I could not find a way to use my static library crt0ELF.a with TinyCC. The compiler emits the following error message :

CODE

\tcc\tcc\tcc -ID:\tcc\include\winapi -ID:\tcc\include -L..\lib -lkernel32 -luser32 -lgdi32 hello_win.c ..\crt0ELF\crt0ELF.a -o hello_win.exe

tcc: undefined symbol '_winstart'

crt0ELF.a is a static library including the two startup modules for console and GUI applications. I used the librarian ar.exe supplied with the MinGW package to build the static library :

CODE

\MinGW\bin\ar rc crt0ELF.a crt0cons.o crt0gui.o

Is there a way to use static libraries with TinyCC?

Attached File ( Number of downloads: 92 )


samael
Typo-lord Group: Moderators Posts: 404 Member No.: 5187 Joined: 10-June 07	Vortex, this may sound dumb as i have never played with Tiny CC, but i thing the __declspec(naked) statement is Microsoft compiler specific. I really don't know if it's supported by Tiny CC. Also, according to this page, the -B option specifies whether bindings of libraries for linking are static or dynamic. -B [static\|dynamic]. Hope this helps.

Vortex

Extremely Active Member

Group: Moderators
Posts: 140
Member No.: 8
Joined: 13-May 04

Hi Samael,

Many thanks for your help.

It's true that __declspec(naked) is specific to MS compilers but it's interesting to note that the Tiny C compiler does not display any warning message if a function is declared with __declspec(naked) The compiler ignores the statement.

The Tiny C compiler does not support the -b switch :

CODE

tcc: invalid option -- '-b'

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