On 17/08/2022 09:35, Christophe Lyon via Gcc-patches wrote:
On arm, the --with-float= configure option is used to define include
files search path (among other things). However, when targeting
arm-linux-gnueabihf, one would expect to automatically default to the
hard-float ABI, but this is not the case. As a consequence, GCC
bootstrap fails on an arm-linux-gnueabihf target if --with-float=hard
is not used.
This patch checks if the target name ends with 'hf' and defines
with_float to hard if not already defined. This is achieved in
gcc/config.gcc, just before selecting the default CPU depending on the
$with_float value.
2022-08-17 Christophe Lyon <christophe.l...@arm.com>
gcc/
* config.gcc (arm): Define with_float to hard if target name ends
with 'hf'.
---
gcc/config.gcc | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 4e3b15bb5e9..02f58970db0 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1314,6 +1314,13 @@ arm*-*-linux-* | arm*-*-uclinuxfdpiceabi)
tm_file="$tm_file arm/uclinuxfdpiceabi.h"
;;
esac
+ # Define with_float to "hard" if not already defined and
+ # target name ends with "hf"
+ case $target:$with_float in
+ arm*-*-*hf:)
+ with_float=hard
+ ;;
+ esac
# Generation of floating-point instructions requires at least ARMv5te.
if [ "$with_float" = "hard" -o "$with_float" = "softfp" ] ; then
target_cpu_cname="arm10e"
OK.
R.
