diff options
Diffstat (limited to 'sysdeps/csky/preconfigure')
| -rwxr-xr-x[-rw-r--r--] | sysdeps/csky/preconfigure | 55 |
1 files changed, 35 insertions, 20 deletions
diff --git a/sysdeps/csky/preconfigure b/sysdeps/csky/preconfigure index 8a6136dd8d..7f8621b607 100644..100755 --- a/sysdeps/csky/preconfigure +++ b/sysdeps/csky/preconfigure @@ -5,10 +5,8 @@ case "$machine" in csky*) abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __CSKYABI__ \(.*\)/\1/p'` - 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'` + soft_float=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | + sed -n 's/^#define __CSKY_SOFT_FLOAT__ \(.*\)/\1/p'` hard_float_abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __CSKY_HARD_FLOAT_ABI__ \(.*\)/\1/p'` @@ -24,26 +22,39 @@ csky*) ;; 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 + # This check is for compatibility with GCC versions earlier than 11. + # The older versions of C-SKY GCC do not support the '-mfloat-abi=softfp' option + # and never define the '__CSKY_HARD_FLOAT_ABI__'. + # Therefore, if a check for '-mfloat-abi=softfp' is added as the expression + # 'defined(__CSKY_HARD_FLOAT__) && !defined(__CSKY_HARD_FLOAT_ABI__)' + # which is correct for newer versions of GCC will not work for those older versions. + # Since no expression compatible with all versions of GCC exists, + # a check for the '-mfloat-abi=softfp' option is added. + if { ac_try='${CC-cc} -S -mfloat-abi=softfp /dev/null 1>&5' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; }; then + soft_float_abi_support=1 + else + soft_float_abi_support=0 + fi + + if test -n "$soft_float"; then + with_fp_cond=0 + with_hard_float_abi=0 + else + with_fp_cond=1 + if test -n "$soft_float_abi_support"; then if test -n "$hard_float_abi"; then - with_fp_cond=1 + with_hard_float_abi=1 else - with_fp_cond=0 + with_hard_float_abi=0 fi + else + with_hard_float_abi=1 fi - else - with_fp_cond=0 fi base_machine=csky @@ -57,5 +68,9 @@ _ACEOF #define CSKY_HARD_FLOAT $with_fp_cond _ACEOF + cat >>confdefs.h <<_ACEOF +#define CSKY_HARD_FLOAT_ABI $with_hard_float_abi +_ACEOF + ;; esac |