diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 3e2fe43e04..71f831636c 100644 --- a/configure.ac +++ b/configure.ac @@ -3952,6 +3952,22 @@ AC_CACHE_CHECK([for prefix of external symbols], rb_cv_symbol_prefix, [ ]) SYMBOL_PREFIX="$rb_cv_symbol_prefix" test "x$SYMBOL_PREFIX" = xNONE && SYMBOL_PREFIX='' + +AS_IF([test x"$enable_shared" = xyes], [ + AC_CACHE_CHECK([for default symbols in empty shared library], rb_cv_symbols_in_emptylib, [ + save_CC="$CC" + eval CC=\"`printf "%s" "${DLDSHARED}" | sed ['s/\$(CC)/${CC}/']`\" + AC_LINK_IFELSE([AC_LANG_PROGRAM()],[ + rb_cv_symbols_in_emptylib=`$NM -Pgp conftest$ac_exeext | + sed ["/ [A-TV-Z] .*/!d;s///;s/^${SYMBOL_PREFIX}//;/^main$/d"]` + ]) + set ${rb_cv_symbols_in_emptylib} + rb_cv_symbols_in_emptylib="$*" + CC="$save_CC" + ]) +]) +AC_SUBST(XSYMBOLS_IN_EMPTYLIB, "${rb_cv_symbols_in_emptylib}") + DLNOBJ=dln.o AC_ARG_ENABLE(dln, AS_HELP_STRING([--disable-dln], [disable dynamic link feature]), |