From 92c94e7df230dd86eb46e8edf8e9d92531d5f6ef Mon Sep 17 00:00:00 2001
From: Jay Berkenbilt <ejb@ql.org>
Date: Wed, 20 Jun 2012 12:48:27 -0400
Subject: Add symbol versioning

For ELF systems, turn on versioned symbols by default, and add a
configure option to enable or disable them.
---
 make/libtool.mk | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'make/libtool.mk')

diff --git a/make/libtool.mk b/make/libtool.mk
index 8cd94325..e23ed246 100644
--- a/make/libtool.mk
+++ b/make/libtool.mk
@@ -18,6 +18,12 @@ endef
 
 # --- Private definitions ---
 
+ifeq ($(HAVE_LD_VERSION_SCRIPT), 1)
+LD_VERSION_FLAGS=-Wl,--version-script=libqpdf.map
+else
+LD_VERSION_FLAGS=
+endif
+
 # Usage: $(call libdepflags,$(basename obj))
 # Usage: $(call fixdeps,$(basename obj))
 ifeq ($(GENDEPS),1)
@@ -83,7 +89,8 @@ endef
 # Usage: $(call makelib,objs,library,ldflags,libs,current,revision,age)
 define makelib
 	$(LIBTOOL) --mode=link \
-		$(CXX) $(CXXFLAGS) -o $(2) $(1) $(3) $(4) \
+		$(CXX) $(CXXFLAGS) $(LD_VERSION_FLAGS) \
+		 -o $(2) $(1) $(3) $(4) \
 		 -rpath $(libdir) -version-info $(5):$(6):$(7)
 endef
 
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