diff options
| author | Cooper Qu <cooper.qu@linux.alibaba.com> | 2020-10-20 23:00:59 +0800 |
|---|---|---|
| committer | Mao Han <han_mao@linux.alibaba.com> | 2020-10-21 16:05:29 +0800 |
| commit | 56b223c1c8334e4255bf11aed1386a007822702a (patch) | |
| tree | 3b3a2f0d3e0432f6585fc288ba7746527bb26499 /sysdeps/csky | |
| parent | 33e5907ee6be67f029a98c2d7df60561dd7186cc (diff) | |
| download | glibc-56b223c1c8334e4255bf11aed1386a007822702a.tar.gz glibc-56b223c1c8334e4255bf11aed1386a007822702a.tar.xz glibc-56b223c1c8334e4255bf11aed1386a007822702a.zip | |
C-SKY: Make dynamic linker's name compitable with the older gcc.
__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>
Diffstat (limited to 'sysdeps/csky')
| -rw-r--r-- | sysdeps/csky/preconfigure | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/sysdeps/csky/preconfigure b/sysdeps/csky/preconfigure index 16f3b60cf5..5f22416f95 100644 --- a/sysdeps/csky/preconfigure +++ b/sysdeps/csky/preconfigure @@ -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 |