[libc] Enable floating point support for baremetal printf

[petrhosek]

It's somewhat common for baremetal projects to use floating point so printf support is actually desirable.

fixes #100816

[llvmbot]

@llvm/pr-subscribers-libc

Author: Petr Hosek (petrhosek)

Changes

It's somewhat common for baremetal projects to use floating point so printf support is actually desirable.

---

Full diff: https://github.com/llvm/llvm-project/pull/101912.diff

1 Files Affected:

• (modified) libc/config/baremetal/config.json (-3)

diff --git a/libc/config/baremetal/config.json b/libc/config/baremetal/config.json
index f0ff268b56275..f5b260d805c93 100644
--- a/libc/config/baremetal/config.json
+++ b/libc/config/baremetal/config.json
@@ -5,9 +5,6 @@
     }
   },
   "printf": {
-    "LIBC_CONF_PRINTF_DISABLE_FLOAT": {
-      "value": true
-    },
     "LIBC_CONF_PRINTF_DISABLE_INDEX_MODE": {
       "value": true
     },

[michaelrj-google]

This will work, but I will warn you that printf float support will increase binary size significantly.

[jhuber6]

This will work, but I will warn you that printf float support will increase binary size significantly.

Yeah, It's disabled on the GPU because it makes compilation take forever even with the long double table turned off. I floated the idea of allowing strfromd to work even w/ it disabled for printf but never got around to it.

[petrhosek]

Superseded by #199758.