From 09f7800768f8cc02ecaff4fdb020c195ba4d363a Mon Sep 17 00:00:00 2001
From: Andreas Schuh <andreas.schuh.84@gmail.com>
Date: Tue, 25 Mar 2014 15:29:56 +0000
Subject: [PATCH] Use GFLAGS_IS_A_DLL=1 in public headers if BUILD_SHARED_LIBS
 is enabled (Fixes issue #77).

---
 CMakeLists.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 93d3a73..7ada98c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -197,6 +197,15 @@ else ()
   set (GFLAGS_ATTRIBUTE_UNUSED)
 endif ()
 
+# whenever we build a shared library (DLL on Windows), configure the public
+# headers of the API for use of this library rather than the optionally
+# also build statically linked library; users can override GFLAGS_DLL_DECL
+if (BUILD_SHARED_LIBS)
+  set (GFLAGS_IS_A_DLL 1)
+else ()
+  set (GFLAGS_IS_A_DLL 0)
+endif ()
+
 configure_headers (PUBLIC_HDRS  ${PUBLIC_HDRS})
 configure_sources (PRIVATE_HDRS ${PRIVATE_HDRS})
 configure_sources (GFLAGS_SRCS  ${GFLAGS_SRCS})
-- 
2.7.4