diff options
Diffstat (limited to 'gcc/config.gcc')
| -rw-r--r-- | gcc/config.gcc | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/gcc/config.gcc b/gcc/config.gcc index 9aea7ce..c789037 100644 --- a/gcc/config.gcc +++ b/gcc/config.gcc @@ -34,9 +34,14 @@ # threads support was requested. # # default_use_cxa_atexit -# "no" by default, can be set to "yes" if a target -# wishes to use __cxa_atexit() by default if the -# $enable___cxa_atexit variable is not set. +# The default value for the $enable___cxa_atexit +# variable. enable___cxa_atexit needs to be set to +# "yes" for the correct operation of C++ destructors +# but it relies upon the presence of a non-standard C +# library function called __cxa_atexit. +# Since not all C libraries provide __cxa_atexit the +# default value of $default_use_cxa_atexit is set to +# "no" except for targets which are known to be OK. # # gas_flag Either yes or no depending on whether GNU as was # requested. @@ -461,6 +466,8 @@ case ${target} in tm_defines="${tm_defines} UCLIBC_DEFAULT=0" ;; esac + # Assume that glibc or uClibc are being used and so __cxa_atexit is provided. + default_use_cxa_atexit=yes ;; *-*-gnu*) # On the Hurd, the setup is just about the same on @@ -482,6 +489,8 @@ case ${target} in tm_file="${cpu_type}/${cpu_type}.h i386/unix.h i386/att.h dbxelf.h elfos.h svr4.h linux.h i386/linux.h gnu.h ${tm_file}" ;; esac + # Assume that glibc is being used and so __cxa_atexit is provided. + default_use_cxa_atexit=yes ;; *-*-netbsd*) tmake_file="t-slibgcc-elf-ver t-libc-ok t-netbsd t-libgcc-pic" @@ -551,6 +560,10 @@ case ${target} in *) echo 'Unknown thread configuration for VxWorks'; exit 1 ;; esac ;; +*-*-elf) + # Assume that newlib is being used and so __cxa_atexit is provided. + default_use_cxa_atexit=yes + ;; esac case ${target} in |