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| author | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2023-10-14 16:51:11 +0900 |
|---|---|---|
| committer | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2023-10-14 18:38:24 +0900 |
| commit | 96cd73d78f8986db0aaab9368c2ffa6867613a37 (patch) | |
| tree | d30652b2bbafc6b2fb3dc63db1f5b4d8a7ec6ab0 /configure.ac | |
| parent | eb79b0319bc9b04067bd9c795f9447dd03615df2 (diff) | |
| download | ruby-96cd73d78f8986db0aaab9368c2ffa6867613a37.tar.gz | |
Ignore symbols even in empty shared library
On some platforms, such as FreeBSD and Oracle Linux, symbols defined
in the crt0 setup routine are exported from shared libraries. So
ignore the symbols that would be exported even in an empty shared
library.
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]), |