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-rw-r--r--ares/m4/cares-compilers.m423
1 files changed, 13 insertions, 10 deletions
diff --git a/ares/m4/cares-compilers.m4 b/ares/m4/cares-compilers.m4
index 09c59be01..9c8294877 100644
--- a/ares/m4/cares-compilers.m4
+++ b/ares/m4/cares-compilers.m4
@@ -16,7 +16,7 @@
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
-# serial 54
+# serial 55
dnl CARES_CHECK_COMPILER
@@ -1077,8 +1077,10 @@ dnl Settings which depend on configure's curldebug given
dnl option, and other additional configure pre-requisites.
dnl Using the curl debug memory tracking feature in c-ares
dnl is a hack that actually can only be used/enabled when
-dnl c-ares is built as a static library directly in curl's
-dnl CVS tree along with an equally configured libcurl.
+dnl c-ares is built directly in curl's CVS tree, as a static
+dnl library or as a shared one on those systems on which
+dnl shared libraries support undefined symbols, along with
+dnl an equally configured libcurl.
AC_DEFUN([CARES_CHECK_CURLDEBUG], [
AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl
@@ -1146,6 +1148,7 @@ AC_DEFUN([CARES_CHECK_CURLDEBUG], [
fi
#
if test "$want_curldebug" = "yes"; then
+ dnl TODO: Verify if the BUILDING_LIBCURL definition is still required.
AC_DEFINE(BUILDING_LIBCURL, 1, [when building as static part of libcurl])
CPPFLAGS="$CPPFLAGS -DCURLDEBUG"
squeeze CPPFLAGS
@@ -1155,13 +1158,18 @@ AC_DEFUN([CARES_CHECK_CURLDEBUG], [
dnl CARES_CHECK_NO_UNDEFINED
dnl -------------------------------------------------
+dnl Checks if the -no-undefined flag must be used when
+dnl building shared libraries. This is required on all
+dnl systems on which shared libraries should not have
+dnl references to undefined symbols. This check should
+dnl not be done before AC-PROG-LIBTOOL.
AC_DEFUN([CARES_CHECK_NO_UNDEFINED], [
AC_BEFORE([$0],[CARES_CHECK_CURLDEBUG])dnl
- AC_MSG_CHECKING([if we need -no-undefined])
+ AC_MSG_CHECKING([if shared libraries need -no-undefined])
need_no_undefined="no"
case $host in
- *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc* | *-*-aix*)
need_no_undefined="yes"
;;
esac
@@ -1170,11 +1178,6 @@ AC_DEFUN([CARES_CHECK_NO_UNDEFINED], [
elif test "x$allow_undefined_flag" = "xunsupported"; then
need_no_undefined="yes"
fi
- case $compiler_id in
- IBM_C | INTEL_UNIX_C | INTEL_WINDOWS_C | SUNPRO_C)
- need_no_undefined="yes"
- ;;
- esac
AC_MSG_RESULT($need_no_undefined)
])