binutils-gdb/ld/ldmisc.h
Benjamin Drung b0cc81e870 ld: Support percent-encoded JSON in --package-metadata
Specifying the compiler flag `-Wl,--package-metadata=<JSON>` will not
work in case the JSON contains a comma, because compiler drivers eat
commas. Example:

```
$ echo "void main() { }" > test.c
$ gcc '-Wl,--package-metadata={"type":"deb","os":"ubuntu"}' test.c
/usr/bin/ld: cannot find "os":"ubuntu"}: No such file or directory
collect2: error: ld returned 1 exit status
```

The quotation marks in the JSON value do not work well with shell nor
make. Specifying the `--package-metadata` linker flag in a `LDFLAGS`
environment variable might loose its quotation marks when it hits the
final compiler call.

So support percent-encoded and %[string] encoded JSON data in the
`--package-metadata` linker flag. Percent-encoding is used because it is
a standard, simple to implement, and does take too many additional
characters. %[string] encoding is supported for having a more readable
encoding.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=32003
Bug-Ubutru: https://bugs.launchpad.net/bugs/2071468
Signed-off-by: Benjamin Drung <benjamin.drung@canonical.com>
2024-11-18 11:38:25 +01:00

45 lines
1.6 KiB
C

/* ldmisc.h -
Copyright (C) 1991-2024 Free Software Foundation, Inc.
This file is part of the GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#ifndef LDMISC_H
#define LDMISC_H
extern void vfinfo (FILE *fp, const char *fmt, va_list arg, bool is_warning);
extern void einfo (const char *, ...);
extern void minfo (const char *, ...);
extern void info_msg (const char *, ...);
extern void lfinfo (FILE *, const char *, ...);
extern void info_assert (const char *, unsigned int);
extern void queue_unknown_cmdline_warning (const char *, ...);
extern void output_unknown_cmdline_warnings (void);
#define ASSERT(x) \
do { if (!(x)) info_assert(__FILE__,__LINE__); } while (0)
#define FAIL() \
do { info_assert(__FILE__,__LINE__); } while (0)
extern void print_spaces (int);
#define print_space() print_spaces (1)
extern void print_nl (void);
extern void percent_decode (const char *, char *);
#endif