| Commit message (Collapse) | Author | Age | Files | Lines |
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Remove unused local variables and declare them conditionally when they
are used only on some architectures.
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for example:
#ifdef stuff
# /* some comment */
#endif
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- fix my prev commit:
put declaration above statements to stay c89 compatible
- replace commit by a blank
#define con(a, b) a/**/b
this should yield a b, not ab
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We need a ' ' after subst of m in the following case
#define m(name,r) name ## r
#define m0(a,b,c) int m(a,b) c
#define m1(a,b,c) int m(a,b)c
m0(a, b, c);
m1(a, b, c);
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crash was triggered by numbers etc. as unexpected token, i.e.
everything that requires additional information with the token.
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This patch takes advantage of new function tcc_open_bf
from previous commit.
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Use it in:
- tcc_open
- tcc_compile_string
- tcc_define_symbol
- tcc_assemble_inline
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In build systems, this is used to automatically collect target
dependencies, e.g.
---- 8< (hello.c) ----
#include "hello.h"
#include <stdio.h>
int main()
{
printf("Hello World!\n");
return 0;
}
$ tcc -MD -c hello.c # -> hello.o, hello.d
$ cat hello.d
hello.o : \
hello.c \
hello.h \
/usr/include/stdio.h \
/usr/include/features.h \
/usr/include/bits/predefs.h \
/usr/include/sys/cdefs.h \
/usr/include/bits/wordsize.h \
/usr/include/gnu/stubs.h \
/usr/include/bits/wordsize.h \
/usr/include/gnu/stubs-32.h \
/home/kirr/local/tcc/lib/tcc/include/stddef.h \
/usr/include/bits/types.h \
/usr/include/bits/wordsize.h \
/usr/include/bits/typesizes.h \
/usr/include/libio.h \
/usr/include/_G_config.h \
/usr/include/wchar.h \
/home/kirr/local/tcc/lib/tcc/include/stdarg.h \
/usr/include/bits/stdio_lim.h \
/usr/include/bits/sys_errlist.h \
NOTE: gcc supports -MD only for .c -> .o, but in tcc, we generate
dependencies for whatever action is being taken. E.g. for .c -> exe, the
result will be:
$ tcc -MD -o hello hello.c # -> hello, hello.d
hello: \
/usr/lib/crt1.o \
/usr/lib/crti.o \
hello.c \
hello.h \
/usr/include/stdio.h \
/usr/include/features.h \
/usr/include/bits/predefs.h \
/usr/include/sys/cdefs.h \
/usr/include/bits/wordsize.h \
/usr/include/gnu/stubs.h \
/usr/include/bits/wordsize.h \
/usr/include/gnu/stubs-32.h \
/home/kirr/local/tcc/lib/tcc/include/stddef.h \
/usr/include/bits/types.h \
/usr/include/bits/wordsize.h \
/usr/include/bits/typesizes.h \
/usr/include/libio.h \
/usr/include/_G_config.h \
/usr/include/wchar.h \
/home/kirr/local/tcc/lib/tcc/include/stdarg.h \
/usr/include/bits/stdio_lim.h \
/usr/include/bits/sys_errlist.h \
/usr/lib/libc.so \
/lib/libc.so.6 \
/usr/lib/ld-linux.so.2 \
/lib/ld-linux.so.2 \
/usr/lib/libc_nonshared.a \
/lib/libc.so.6 \
/usr/lib/libc_nonshared.a \
/home/kirr/local/tcc/lib/tcc/libtcc1.a \
/usr/lib/crtn.o \
So tcc dependency generator is a bit more clever than one used in gcc :)
Also, I've updated TODO and Changelog (in not-yet-released section).
v2:
(Taking inputs from grischka and me myself)
- put code to generate deps file into a function.
- used tcc_fileextension() instead of open-coding
- generate deps only when compilation/preprocessing was successful
v3:
- use pstrcpy instead of snprintf(buf, sizeof(buf), "%s", ...)
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This reverts commit f740485a5ab2ecef741bf1161b9feeea9c18cac0.
It breaks access to structure elements starting with L
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* Replace the save/load_buffer_state by a dynarray approach:
- Filename and libname are added to a dynarray when first encountered
- Load repeatedly the files in the dynarray until no new undefined
symbol are encountered
* Replace snprintf by sprintf in libname_to_filename
* Use tcc_fileextension in filename_to_libname
* Introduce a tcc_strcpy_part fonction to copy only a subset of a
string
* Move new_undef_syms declaration from tcc.h to tccelf.c
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* search file from INPUT and GROUP commands in the library path in
addition to the current directory
* handle libraries specified by -lfoo options
* Search lib in GROUP command repeatedly
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--
By by ... Detlef
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If you want that, run: make NOTALLINONE=1
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Such as with
#ifndef FOO_H
...
#else
...
#endif
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# 1 "main.c"
# 1 "include/stdio.h" 1
# 123 "include/stdio.h" 3
# 10 "main.c" 2
flags: 1: level++; 3: same-level 2: level--
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comparing the filenames as in the #include statement can be
ambiguous if including files are in different directories.
Now caches and checks the really opened filename instead.
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