diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/configure')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/configure | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/configure b/sysdeps/unix/sysv/linux/i386/configure index eb72659dc3..ae2c3567c5 100644 --- a/sysdeps/unix/sysv/linux/i386/configure +++ b/sysdeps/unix/sysv/linux/i386/configure @@ -3,5 +3,44 @@ arch_minimum_kernel=2.6.32 +# Check if CFLAGS allows compiler to use ebp register in inline assembly. + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler flags allows ebp in inline assembly" >&5 +$as_echo_n "checking if compiler flags allows ebp in inline assembly... " >&6; } +if ${libc_cv_can_use_register_asm_ebp+:} false; then : + $as_echo_n "(cached) " >&6 +else + +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + + void foo (int i) + { + register int reg asm ("ebp") = i; + asm ("# %0" : : "r" (reg)); + } +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + libc_cv_can_use_register_asm_ebp=yes +else + libc_cv_can_use_register_asm_ebp=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_can_use_register_asm_ebp" >&5 +$as_echo "$libc_cv_can_use_register_asm_ebp" >&6; } +if test $libc_cv_can_use_register_asm_ebp = yes; then + $as_echo "#define CAN_USE_REGISTER_ASM_EBP 1" >>confdefs.h + +fi + libc_cv_gcc_unwind_find_fde=yes ldd_rewrite_script=sysdeps/unix/sysv/linux/ldd-rewrite.sed |