diff options
Diffstat (limited to 'unix/configure')
| -rwxr-xr-x | unix/configure | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/unix/configure b/unix/configure index 2de5b54..a35cde4 100755 --- a/unix/configure +++ b/unix/configure @@ -3930,6 +3930,45 @@ done #------------------------------------------------------------------------ +# If we're using GCC, see if the compiler understands -fshort-wchar. If so, use it. +# It makes sure you can use the wchar_t type interchangable with Tcl_UniChar +#------------------------------------------------------------------------ + +if test -z "$no_short_wchar" && test -n "$GCC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if the compiler understands -fshort-wchar" >&5 +$as_echo_n "checking if the compiler understands -fshort-wchar... " >&6; } +if ${tcl_cv_cc_short_wchar+:} false; then : + $as_echo_n "(cached) " >&6 +else + + hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fshort-wchar" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + tcl_cv_cc_short_wchar=yes +else + tcl_cv_cc_short_wchar=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + CFLAGS=$hold_cflags +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $tcl_cv_cc_short_wchar" >&5 +$as_echo "$tcl_cv_cc_short_wchar" >&6; } + if test $tcl_cv_cc_short_wchar = yes; then + CFLAGS="$CFLAGS -fshort-wchar" + fi +fi + +#------------------------------------------------------------------------ # If we're using GCC, see if the compiler understands -pipe. If so, use it. # It makes compiling go faster. (This is only a performance feature.) #------------------------------------------------------------------------ |