libphobos: Remove --enable-thread-lib configure option.

This is another old option that doesn't make sense as a configurable.
So the option has been removed, and the check for AC_SEARCH_LIBS moved
into the main configure.ac file.

libphobos/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Use AC_SEARCH_LIBS for pthread_create.
	* m4/druntime/libraries.m4: Remove DRUNTIME_LIBRARIES_THREAD.

1 files changed, 3 insertions, 75 deletions

diff --git a/libphobos/configure b/libphobos/configure
index 108518d86aa..f458ad3b086 100755
--- a/libphobos/configure
+++ b/libphobos/configure
@@ -835,7 +835,6 @@ enable_libtool_lock
 with_gcc_major_version_only
 enable_werror
 enable_druntime_gc
-enable_thread_lib
 with_libatomic
 with_libbacktrace
 with_target_system_zlib
@@ -1485,9 +1484,6 @@ Optional Features:
   --disable-libtool-lock  avoid locking (might break parallel builds)
   --enable-werror         turns on -Werror [default=no]
   --enable-druntime-gc    enable D runtime garbage collector (default: yes)
-  --enable-thread-lib=<arg>
-                          specify linker option for the system thread library
-                          (default: autodetect)
   --enable-version-specific-runtime-libs
                           Specify that runtime libraries should be installed
                           in a compiler-specific directory
@@ -11646,7 +11642,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11649 "configure"
+#line 11645 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11752,7 +11748,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11755 "configure"
+#line 11751 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -14480,17 +14476,7 @@ if test "$ac_res" != no; then :
 
 fi
 
-
-  enable_thread_lib=yes
-  # Check whether --enable-thread-lib was given.
-if test "${enable_thread_lib+set}" = set; then :
-  enableval=$enable_thread_lib;
-fi
-
-
-  if test "x$enable_thread_lib" = "xyes"; then :
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing pthread_create" >&5
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing pthread_create" >&5
 $as_echo_n "checking for library containing pthread_create... " >&6; }
 if ${ac_cv_search_pthread_create+:} false; then :
   $as_echo_n "(cached) " >&6
@@ -14536,64 +14522,6 @@ if test "$ac_res" != no; then :
 
 fi
 
-
-else
-
-    if test "x$enable_thread_lib" = "xno"; then :
-
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for thread library" >&5
-$as_echo_n "checking for thread library... " >&6; }
-      { $as_echo "$as_me:${as_lineno-$LINENO}: result: disabled" >&5
-$as_echo "disabled" >&6; }
-
-else
-
-      as_ac_Lib=`$as_echo "ac_cv_lib_$enable_thread_lib''_pthread_create" | $as_tr_sh`
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_create in -l$enable_thread_lib" >&5
-$as_echo_n "checking for pthread_create in -l$enable_thread_lib... " >&6; }
-if eval \${$as_ac_Lib+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-l$enable_thread_lib  $LIBS"
-cat > conftest.$ac_ext <<_ACEOF
-module mod;
- extern(C) int pthread_create();
-
-extern(C) int main() {
-  pthread_create(); return 0;
-}
-_ACEOF
-if ac_fn_d_try_link "$LINENO"; then :
-  eval "$as_ac_Lib=yes"
-else
-  eval "$as_ac_Lib=no"
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-eval ac_res=\$$as_ac_Lib
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
-if eval test \"x\$"$as_ac_Lib"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_LIB$enable_thread_lib" | $as_tr_cpp` 1
-_ACEOF
-
-  LIBS="-l$enable_thread_lib $LIBS"
-
-else
-
-        as_fn_error $? "Thread library not found" "$LINENO" 5
-
-fi
-
-
-fi
-
-fi
-
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing cosf" >&5
 $as_echo_n "checking for library containing cosf... " >&6; }
 if ${ac_cv_search_cosf+:} false; then :