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| author | Johannes Stoelp <johannes.stoelp@gmail.com> | 2021-11-28 23:26:28 +0100 |
|---|---|---|
| committer | Johannes Stoelp <johannes.stoelp@gmail.com> | 2021-11-28 23:26:28 +0100 |
| commit | 6660154d7eaae83f3e8765af8b93dcd651e05452 (patch) | |
| tree | 26a9f782c98e9c4980a414b644d5f093b7f9cd7b /src/development | |
| parent | c1e3312a519d175908288deba2ec8d7585e4a8fe (diff) | |
| download | notes-6660154d7eaae83f3e8765af8b93dcd651e05452.tar.gz notes-6660154d7eaae83f3e8765af8b93dcd651e05452.zip | |
gcc: add notes on getting target info
Diffstat (limited to 'src/development')
| -rw-r--r-- | src/development/gcc.md | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/development/gcc.md b/src/development/gcc.md index f64bc2a..d3823f3 100644 --- a/src/development/gcc.md +++ b/src/development/gcc.md @@ -11,6 +11,15 @@ gcc -E [-dM] ... - `-E` run only preprocessor - `-dM` list only `#define` statements +### Target options +```bash +# List all target options with their description. +gcc --help=target + +# Configure for current cpu arch and query (-Q) value of options. +gcc -march=native -Q --help=target +``` + ## [Builtins][builtins] ### `__builtin_expect(expr, cond)` |