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doc: update tcc-doc.texi to match current implementation
Most of the manual predates the x86-64, ARM64, RISC-V 64 and Mach-O
targets, and parts of it describe things TCC never did or no longer
does.  Go through it against the sources: the target table, the C11 and
GNU C extensions, the attributes, built-ins and pragmas, the command
line options and their defaults, the assembler and linker chapters, the
bound checks and the libtcc call sequence.

The developer's guide had drifted the most, from CType and Sym.type down
to gfunc_call() and next_c(), and is resynced as well.

The option groups become @subheading instead of plain text.  texi2pod.pl
has no handler for it and would copy them verbatim into tcc.1, so add
one beside the @subsection handler, and move '@c man begin OPTIONS'
above the first heading so that all of them reach the man page.
2026-08-09 02:45:13 +08:00
.github/workflows review some recent changes 2026-07-08 14:01:40 +02:00
examples Small updates 2025-12-17 20:22:08 +01:00
include tccgen: void values, etc... 2026-05-06 13:46:27 +02:00
lib review some recent changes 2026-07-08 14:01:40 +02:00
tests tccelf: rework linker_sym (_end/end) logic 2026-08-05 17:41:23 +02:00
win32 win32: define arm64 Interlocked helpers in winnt.h 2026-05-23 22:39:17 +09:00
.gitignore reverts (11/2025 - 04/2026) 2026-05-03 11:09:45 +02:00
arm64-asm.c arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
arm64-gen.c arm64: fix symbol addends on LLP64 hosts 2026-07-30 22:53:29 +09:00
arm64-link.c tccpe: tls on windows (i386 / x86-64 / arm64) 2026-07-28 23:46:30 +02:00
arm64-tok.h arm64-win32 support : arm64 assembler 2026-05-04 12:49:53 +02:00
arm-asm.c {arm,i386,riscv64}-asm.c: fix generic operand modifier 'n' not negating 2026-07-24 19:27:21 +02:00
arm-gen.c review platform tls support 2026-07-08 14:01:56 +02:00
arm-link.c review generic tls support 2026-07-08 14:01:52 +02:00
arm-tok.h arm-asm: Accept additional register names 2025-05-07 22:29:46 +02:00
c67-gen.c some reverts & fixes 2026-01-10 13:46:23 +01:00
c67-link.c div fixes 2024-06-11 14:26:34 +02:00
Changelog configury update & bump VERSION to 0.9.28rc 2023-09-06 22:42:52 +02:00
CodingStyle CodingStyle: Remove reference to misaligned struct CString. 2016-01-06 19:09:28 +00:00
coff.h Spelling fixes in C comments only 2017-05-07 21:38:09 -07:00
configure tccpe: tls on windows (i386 / x86-64 / arm64) 2026-07-28 23:46:30 +02:00
conftest.c configury update & bump VERSION to 0.9.28rc 2023-09-06 22:42:52 +02:00
COPYING changed license to LGPL 2003-05-24 14:18:56 +00:00
dwarf.h Add dwarf support 2022-05-05 09:10:37 +02:00
elf.h riscv64: emit .riscv.attributes section in ELF output 2026-05-07 11:44:46 +08:00
i386-asm.c {arm,i386,riscv64}-asm.c: fix generic operand modifier 'n' not negating 2026-07-24 19:27:21 +02:00
i386-asm.h Add endbr32 for i386 2025-07-14 08:27:14 +02:00
i386-gen.c tccpe: tls on windows (i386 / x86-64 / arm64) 2026-07-28 23:46:30 +02:00
i386-link.c review generic tls support 2026-07-08 14:01:52 +02:00
i386-tok.h x86asm: Add lzcnt/tzcnt support 2022-12-13 11:34:54 +01:00
il-gen.c revert "Save registers around attribute cleanup" (almost) 2025-05-25 00:20:23 +02:00
il-opcodes.h Revert all of my changes to directories & codingstyle. 2015-07-29 16:57:12 -04:00
libtcc.c tccpe: tls on windows (i386 / x86-64 / arm64) 2026-07-28 23:46:30 +02:00
libtcc.h reverts (11/2025 - 04/2026) 2026-05-03 11:09:45 +02:00
Makefile tccelf: rework linker_sym (_end/end) logic 2026-08-05 17:41:23 +02:00
README Reverts & cleanups 2025-10-09 13:08:33 +02:00
RELICENSING Relicensing TinyCC 2026-04-16 10:45:24 -03:00
riscv64-asm.c {arm,i386,riscv64}-asm.c: fix generic operand modifier 'n' not negating 2026-07-24 19:27:21 +02:00
riscv64-gen.c tls: fix local-exec addresses and external symbols 2026-07-10 23:58:23 +09:00
riscv64-link.c review generic tls support 2026-07-08 14:01:52 +02:00
riscv64-tok.h riscv64-asm: complete AMO aq/rl suffixes for all ops 2026-05-07 11:44:46 +08:00
stab.def Revert all of my changes to directories & codingstyle. 2015-07-29 16:57:12 -04:00
stab.h Revert all of my changes to directories & codingstyle. 2015-07-29 16:57:12 -04:00
tcc-doc.texi doc: update tcc-doc.texi to match current implementation 2026-08-09 02:45:13 +08:00
tcc.c configure & tcc.h: include & lib searchpath cleanup 2026-05-06 13:46:42 +02:00
tcc.h tccelf: rework linker_sym (_end/end) logic 2026-08-05 17:41:23 +02:00
tccasm.c tccgen: void values, etc... 2026-05-06 13:46:27 +02:00
tcccoff.c tcc_error_noabort(): always use this unless compiling 2023-04-25 15:22:03 +02:00
tccdbg.c Relocation updates 2025-12-23 06:46:22 +01:00
tccelf.c tccelf: rework linker_sym (_end/end) logic 2026-08-05 17:41:23 +02:00
tccgen.c tccelf: rework linker_sym (_end/end) logic 2026-08-05 17:41:23 +02:00
tcclib.h arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
tccmacho.c fix: TLS test failures on osx/win32/armv7 2026-05-13 12:28:58 +08:00
tccpe.c tccpe: tls on windows (i386 / x86-64 / arm64) 2026-07-28 23:46:30 +02:00
tccpp.c tccpe: tls on windows (i386 / x86-64 / arm64) 2026-07-28 23:46:30 +02:00
tccrun.c review some recent changes 2026-07-08 14:01:40 +02:00
tcctok.h tccpe: tls on windows (i386 / x86-64 / arm64) 2026-07-28 23:46:30 +02:00
tcctools.c tcc.c:main() free all & etc... 2025-08-18 20:43:52 +02:00
texi2pod.pl doc: update tcc-doc.texi to match current implementation 2026-08-09 02:45:13 +08:00
TODO testing 2025-07-21 00:48:51 -03:00
USES configury update & bump VERSION to 0.9.28rc 2023-09-06 22:42:52 +02:00
VERSION configury update & bump VERSION to 0.9.28rc 2023-09-06 22:42:52 +02:00
x86_64-asm.h x86-64: Fix cvts*2si 2025-12-03 17:21:00 +02:00
x86_64-gen.c tccpe: tls on windows (i386 / x86-64 / arm64) 2026-07-28 23:46:30 +02:00
x86_64-link.c review generic tls support 2026-07-08 14:01:52 +02:00

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 machine code for i386, x86_64, arm, aarch64 or
  riscv64.  Compiles and links about 10 times faster than 'gcc -O0'.

- UNLIMITED! Any C dynamic library can be used directly. TCC is
  heading toward 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 Linux, BSD variants or macOS hosts:

   ./configure
   make
   make test
   make install

   Notes: On BSD hosts, gmake should be used instead of make.
   For Windows read tcc-win32.txt.

makeinfo must be installed to compile the doc.  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 ! As for ex1.c, can also be launched
directly as a script: './ex4.c'.

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 for the Windows port is in tcc-win32.txt.

License:
-------

TCC is distributed under the GNU Lesser General Public License (see
COPYING file).

Fabrice Bellard.