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Makefile: Add build time and compiler info string

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When we are doing opensbi development, we want to know the build time
and compiler info for debug purpose.

To enable this message, please add "BUILD_INFO=y", like:

```
make BUILD_INFO=y
```

NOTE: Using `BUILD_INFO=y` without specifying SOURCE_DATE_EPOCH will
violate "reproducible builds". So it's ONLY for development and debug
purpose, and should NOT be used in a product which follows "reproducible
builds".

Signed-off-by: Wei Fu <wefu@redhat.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Wei Fu
2021-09-30 18:11:20 +08:00
committed by Anup Patel
parent 67cbbcb100
commit 422eda499c
3 changed files with 63 additions and 0 deletions
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8
lib/sbi/sbi_init.c
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@@ -48,6 +48,14 @@ static void sbi_boot_print_banner(struct sbi_scratch *scratch)
OPENSBI_VERSION_MINOR);
#endif
#ifdef OPENSBI_BUILD_TIME_STAMP
sbi_printf("Build time: %s\n", OPENSBI_BUILD_TIME_STAMP);
#endif
#ifdef OPENSBI_BUILD_COMPILER_VERSION
sbi_printf("Build compiler: %s\n", OPENSBI_BUILD_COMPILER_VERSION);
#endif
sbi_printf(BANNER);
}