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C-SKY: Make dynamic linker's name compitable with the older gcc.

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__CSKY_HARD_FLOAT_ABI__ was added on gcc 11 to specify whether
-mfloat-abi=hard is set.  On older gcc, the float ABI is defined
solely with __CSKY_HARD_FLOAT__.  If __CSKY_HARD_FLOAT__ is set, it can
be either a hard-float ABI (gcc older than 11, or gcc11 -mfloat-abi=hard
(__CSKY_HARD_FLOAT_ABI__ is set) or -mfloat-abi=softfp
(__CSKY_HARD_FLOAT_ABI__ is not set). To be compatible with older gcc,
use __CSKY_HARD_FLOAT_FPU_SF__ identify if -mfloat-abi is supported,
because it is added to gcc at the same time as -mfloat-abi.

Reviewed-by: Mao Han  <han_mao@linux.alibaba.com>
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Cooper Qu 2020-10-20 23:00:59 +08:00 committed by Mao Han
parent 33e5907ee6
commit 56b223c1c8
1 changed files with 26 additions and 9 deletions
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35
sysdeps/csky/preconfigure
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@ -2,8 +2,12 @@ case "$machine" in
csky*)
abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
sed -n 's/^#define __CSKYABI__ \(.*\)/\1/p'`
float_abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
hard_float=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
sed -n 's/^#define __CSKY_HARD_FLOAT__ \(.*\)/\1/p'`
hard_float_sf=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
sed -n 's/^#define __CSKY_HARD_FLOAT_FPU_SF__ \(.*\)/\1/p'`
hard_float_abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
sed -n 's/^#define __CSKY_HARD_FLOAT_ABI__ \(.*\)/\1/p'`
case "$abi" in
1)
@ -19,14 +23,27 @@ csky*)
;;
esac
case "$float_abi" in
1)
with_fp_cond=1
;;
*)
with_fp_cond=0
;;
esac
# __CSKY_HARD_FLOAT_ABI__ was added on gcc 11 to specify whether
# -mfloat-abi=hard is set. On older gcc, the float ABI is defined solely
# with __CSKY_HARD_FLOAT__. If __CSKY_HARD_FLOAT__ is set, it can be
# either a hard-float ABI (gcc older than 11, or gcc11 -mfloat-abi=hard
# (__CSKY_HARD_FLOAT_ABI__ is set) or -mfloat-abi=softfp
# (__CSKY_HARD_FLOAT_ABI__ is not set). To be compatible with older gcc,
# use __CSKY_HARD_FLOAT_FPU_SF__ identify if -mfloat-abi is supported,
# because it is added to gcc at the same time as -mfloat-abi.
if test -n "$hard_float"; then
if test -z "$hard_float_sf"; then
with_fp_cond=1
else
if test -n "$hard_float_abi"; then
with_fp_cond=1
else
with_fp_cond=0
fi
fi
else
with_fp_cond=0
fi
base_machine=csky
machine=csky/$machine