diff options
Diffstat (limited to 'libstdc++-v3/configure')
| -rwxr-xr-x | libstdc++-v3/configure | 65 |
1 files changed, 63 insertions, 2 deletions
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure index 97a1a8522a0..4cf3a523d94 100755 --- a/libstdc++-v3/configure +++ b/libstdc++-v3/configure @@ -4045,6 +4045,67 @@ deplibs_check_method=$lt_cv_deplibs_check_method # Autoconf 2.13's AC_OBJEXT and AC_EXEEXT macros only works for C compilers! +# find the maximum length of command line arguments +echo "$as_me:$LINENO: checking the maximum length of command line arguments" >&5 +echo $ECHO_N "checking the maximum length of command line arguments... $ECHO_C" >&6 +if test "${lt_cv_sys_max_cmd_len+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + i=0 + teststring="ABCD" + + case $build_os in + msdosdjgpp*) + # On DJGPP, this test can blow up pretty badly due to problems in libc + # (any single argument exceeding 2000 bytes causes a buffer overrun + # during glob expansion). Even if it were fixed, the result of this + # check would be larger than it should be. + lt_cv_sys_max_cmd_len=12288; # 12K is about right + ;; + + cygwin* | mingw*) + # On Win9x/ME, this test blows up -- it succeeds, but takes + # about 5 minutes as the teststring grows exponentially. + # Worse, since 9x/ME are not pre-emptively multitasking, + # you end up with a "frozen" computer, even though with patience + # the test eventually succeeds (with a max line length of 256k). + # Instead, let's just punt: use the minimum linelength reported by + # all of the supported platforms: 8192 (on NT/2K/XP). + lt_cv_sys_max_cmd_len=8192; + ;; + + amigaos*) + # On AmigaOS with pdksh, this test takes hours, literally. + # So we just punt and use a minimum line length of 8192. + lt_cv_sys_max_cmd_len=8192; + ;; + + netbsd* | freebsd* | openbsd* | darwin* | dragonfly*) + # This has been around since 386BSD, at least. Likely further. + if test -x /sbin/sysctl; then + lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax` + elif test -x /usr/sbin/sysctl; then + lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax` + else + lt_cv_sys_max_cmd_len=65536 # usable default for *BSD + fi + # And add a safety zone + lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4` + lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3` + ;; + esac + +fi + +if test -n $lt_cv_sys_max_cmd_len ; then + echo "$as_me:$LINENO: result: $lt_cv_sys_max_cmd_len" >&5 +echo "${ECHO_T}$lt_cv_sys_max_cmd_len" >&6 +else + echo "$as_me:$LINENO: result: none" >&5 +echo "${ECHO_T}none" >&6 +fi + + # Only perform the check for file, if the check method requires it case $deplibs_check_method in file_magic*) @@ -4378,7 +4439,7 @@ test x"$pic_mode" = xno && libtool_flags="$libtool_flags --prefer-non-pic" case $host in *-*-irix6*) # Find out which ABI we are using. - echo '#line 4381 "configure"' > conftest.$ac_ext + echo '#line 4442 "configure"' > conftest.$ac_ext if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 (eval $ac_compile) 2>&5 ac_status=$? @@ -4998,7 +5059,7 @@ fi; # # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style. cat > conftest.$ac_ext << EOF -#line 5001 "configure" +#line 5062 "configure" struct S { ~S(); }; void bar(); void foo() |