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| author | Manuel Stoeckl <code@mstoeckl.com> | 2019-07-16 13:04:27 -0400 |
|---|---|---|
| committer | Drew DeVault <sir@cmpwn.com> | 2019-07-17 21:00:09 -0400 |
| commit | bb056174146ae01448e0281ea204d2ddd60ebe3c (patch) | |
| tree | 292a692ebe8fc83fda0cb4a7f869c6c6871fc172 /include/wlr | |
| parent | 9e8f952997d9e37ccc97aded89e16d52dfd46e60 (diff) | |
Use -fmacro-prefix-map to strip build path
This commit matches sway's 2dc4978d8af326c310057ca8fd22a4c7f5d09335.
To help ensure a reproducible build (when debug info is disabled),
the meson build script now uses the -fmacro-prefix-map command line
argument supported by GCC to strip the build-path dependent bytes
of each __FILE__ string used by wlr_log and related functions.
A rather ugly algorithm is used to compute the relative path between
the build and source folders, because meson has no specific function
for this.
When the compiler does not support -fmacro-prefix-map, fall back
to shifting the start of each __FILE__ string by the length of the
relative path to the source directory.
Diffstat (limited to 'include/wlr')
| -rw-r--r-- | include/wlr/util/log.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/include/wlr/util/log.h b/include/wlr/util/log.h index 2c441180..8eec425c 100644 --- a/include/wlr/util/log.h +++ b/include/wlr/util/log.h @@ -50,13 +50,19 @@ enum wlr_log_importance wlr_log_get_verbosity(void); void _wlr_log(enum wlr_log_importance verbosity, const char *format, ...) _WLR_ATTRIB_PRINTF(2, 3); void _wlr_vlog(enum wlr_log_importance verbosity, const char *format, va_list args) _WLR_ATTRIB_PRINTF(2, 0); -const char *_wlr_strip_path(const char *filepath); + +#ifdef WLR_REL_SRC_DIR +// strip prefix from __FILE__, leaving the path relative to the project root +#define _WLR_FILENAME ((const char *)__FILE__ + sizeof(WLR_REL_SRC_DIR) - 1) +#else +#define _WLR_FILENAME __FILE__ +#endif #define wlr_log(verb, fmt, ...) \ - _wlr_log(verb, "[%s:%d] " fmt, _wlr_strip_path(__FILE__), __LINE__, ##__VA_ARGS__) + _wlr_log(verb, "[%s:%d] " fmt, _WLR_FILENAME, __LINE__, ##__VA_ARGS__) #define wlr_vlog(verb, fmt, args) \ - _wlr_vlog(verb, "[%s:%d] " fmt, _wlr_strip_path(__FILE__), __LINE__, args) + _wlr_vlog(verb, "[%s:%d] " fmt, _WLR_FILENAME, __LINE__, args) #define wlr_log_errno(verb, fmt, ...) \ wlr_log(verb, fmt ": %s", ##__VA_ARGS__, strerror(errno)) |