* Makefile.in: Introduce MAINLIBS.

* configure.in: Link libc_r against the ruby executable on
FreeBSD, which is the first attempt to work around a certain
problem regarding pthread on FreeBSD.  It should make ruby/libruby
happy when it loads an extention to a library compiled and linked
with -pthread.  Note, however, that libruby is _not_ linked with
libc_r so as not to mess up pthread unfriendly stuff including
apache+mod_ruby and vim6+ruby_interp.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1297 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,15 @@
+Mon Apr  2 01:32:38 2001  Akinori MUSHA  <knu@iDaemons.org>
+
+	* Makefile.in: Introduce MAINLIBS.
+
+	* configure.in: Link libc_r against the ruby executable on
+	FreeBSD, which is the first attempt to work around a certain
+	problem regarding pthread on FreeBSD.  It should make ruby/libruby
+	happy when it loads an extention to a library compiled and linked
+	with -pthread.  Note, however, that libruby is _not_ linked with
+	libc_r so as not to mess up pthread unfriendly stuff including
+	apache+mod_ruby and vim6+ruby_interp.
+
 Mon Apr  2 01:16:24 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
 
 	* win32/win32.c: use ruby's opendir on mingw32.

Makefile.in

@@ -22,6 +22,7 @@ MISSING = @LIBOBJS@ @ALLOCA@
 LDSHARED = @LIBRUBY_LDSHARED@
 DLDFLAGS = @LIBRUBY_DLDFLAGS@
 SOLIBS = @SOLIBS@
+MAINLIBS = @MAINLIBS@
 
 RUBY_INSTALL_NAME=@RUBY_INSTALL_NAME@
 RUBY_SO_NAME=@RUBY_SO_NAME@
@@ -91,7 +92,7 @@ miniruby$(EXEEXT):	config.status $(LIBRUBY_A) $(MAINOBJ) dmyext.@OBJEXT@
 
 $(PROGRAM):     $(LIBRUBY) $(MAINOBJ) $(EXTOBJS) 
 		@rm -f $@
-		$(PURIFY) $(CC) $(LDFLAGS) $(XLDFLAGS) $(MAINOBJ) $(EXTOBJS) $(LIBRUBYARG) $(LIBS) -o $@
+		$(PURIFY) $(CC) $(LDFLAGS) $(XLDFLAGS) $(MAINLIBS) $(MAINOBJ) $(EXTOBJS) $(LIBRUBYARG) $(LIBS) -o $@
 
 $(LIBRUBY_A):	$(OBJS) dmyext.@OBJEXT@
 		@AR@ rcu $@ $(OBJS) dmyext.@OBJEXT@

configure.in

@@ -184,6 +184,14 @@ done])
 AC_DEFINE_UNQUOTED([NORETURN(x)], $rb_cv_noreturn)
 
 
+dnl wheather link libc_r or not
+AC_ARG_WITH(libc_r, 
+	[--with-libc_r             link libc_r if possible (FreeBSD only)], [
+	case $withval in
+	yes) with_libc_r=yes;;
+	*)   with_libc_r=no;;
+	esac], [with_libc_r=yes])
+
 dnl Checks for libraries.
 case "$target_os" in
 nextstep*)	;;
@@ -223,6 +231,25 @@ freebsd*)	LIBS="-lm $LIBS"
 		if test "$rb_cv_lib_xpg4_needed" = yes; then
 			AC_CHECK_LIB(xpg4, setlocale)
 		fi
+		if test "$with_libc_r" = yes; then
+			AC_CACHE_CHECK([whether libc_r is supplementary to libc],
+			  rb_cv_supplementary_lib_c_r,
+			  [AC_TRY_CPP([
+#include <osreldate.h>
+#if 500016 <= __FreeBSD_version
+#error libc_r is supplementary to libc
+#endif
+			   ],
+			   rb_cv_supplementary_lib_c_r=no,
+			   rb_cv_supplementary_lib_c_r=yes,
+			   rb_cv_supplementary_lib_c_r=yes)])
+			if test "$rb_cv_supplementary_lib_c_r" = yes; then
+				MAINLIBS="-lc_r $MAINLIBS"			
+			else
+				MAINLIBS="-pthread $MAINLIBS"			
+				CFLAGS="-D_THREAD_SAFE $CFLAGS"
+			fi
+		fi
 		;;
 *) LIBS="-lm $LIBS";;
 esac
@@ -442,7 +469,7 @@ AC_ARG_WITH(default-kcode,
 	esac])
 AC_DEFINE_UNQUOTED(DEFAULT_KCODE, $DEFAULT_KCODE)
 
-dnl wheather use dln_a_out ot not
+dnl wheather use dln_a_out or not
 AC_ARG_WITH(dln-a-out, 
 	[--with-dln-a-out          use dln_a_out if possible], [
 	case $withval in
@@ -963,6 +990,7 @@ AC_SUBST(LIBRUBYARG)
 AC_SUBST(SOLIBS)
 AC_SUBST(DLDLIBS)
 AC_SUBST(ENABLE_SHARED)
+AC_SUBST(MAINLIBS)
 
 ri_prefix=
 test "$program_prefix" != NONE &&