From cadf038430eadbf002f5ff11b6b044ed2065f450 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 18 Oct 2016 07:36:42 +0000
Subject: configure.in: compress debug sections

* configure.in (DLDFLAGS): append --compress-debug-sections=zlib
  if available, which reduces the size of LIBRUBY_SO by half or
  more.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56445 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 configure.in | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'configure.in')

diff --git a/configure.in b/configure.in
index 87da5d85f8..8dd3aa9e66 100644
--- a/configure.in
+++ b/configure.in
@@ -912,6 +912,13 @@ if test "$GCC" = yes; then
 	RUBY_APPEND_OPTION(LDFLAGS, -fstack-protector)
     fi
 
+    RUBY_TRY_LDFLAGS(${linker_flag}--compress-debug-sections=zlib,
+		     [compress_debug_sections=yes],
+		     [compress_debug_sections=no])
+    if test "x$compress_debug_sections" = xyes; then
+	RUBY_APPEND_OPTION(DLDFLAGS, ${linker_flag}--compress-debug-sections=zlib)
+    fi
+
     AS_CASE(["$target_os"],[mingw*], [
       # On  Windows  platforms,   system  provided  headers  are  VC++
       # optimized.  That  is, C++  habits are often  contaminated into
@@ -3893,6 +3900,10 @@ AS_CASE("$enable_shared", [yes], [
     [mingw*|cygwin*|mswin*], [
 	LIBRUBY_RELATIVE=yes
 	])
+
+    if test "x$compress_debug_sections" = xyes; then
+	RUBY_APPEND_OPTION(LIBRUBY_DLDFLAGS, ${linker_flag}--compress-debug-sections=zlib)
+    fi
 ], [
   LIBRUBYARG_SHARED=
 
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