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-rw-r--r--ext/extmk.rb9
1 files changed, 8 insertions, 1 deletions
diff --git a/ext/extmk.rb b/ext/extmk.rb
index 06a9fd50fc..0485568d6b 100644
--- a/ext/extmk.rb
+++ b/ext/extmk.rb
@@ -10,6 +10,7 @@ $extinit = nil
$extobjs = nil
$ignore = nil
$message = nil
+$use_no_undef = nil
$progname = $0
alias $PROGRAM_NAME $0
@@ -33,6 +34,12 @@ $topdir = File.expand_path(".")
$top_srcdir = srcdir
$hdrdir = $top_srcdir
+if not $use_no_undef and /linux/ =~ RUBY_PLATFORM and
+ $configure_args['--enable-shared'] and
+ CONFIG["GNU_LD"] == "yes"
+ $use_no_undef = 0 <= (`ld -v`.scan(/\d+/).map{|x| x.to_i} <=> [2, 11])
+end
+
def sysquote(x)
@quote ||= /human|os2|macos/ =~ (CROSS_COMPILING || RUBY_PLATFORM)
@quote ? x.quote : x
@@ -53,7 +60,7 @@ def extmake(target)
init_mkmf
- if /linux/ =~ RUBY_PLATFORM and $configure_args['--enable-shared'] and CONFIG["GNU_LD"] == "yes"
+ if $use_no_undef
$DLDFLAGS << " -Wl,--no-undefined"
end