(Debian packaging) drop implicit libraries from pkg-config script

Author: rcsanchez97

debian/changelog

@@ -3,6 +3,7 @@ mongo-c-driver (1.14.0-1) unstable; urgency=medium
   * New upstream release
   * Make build reproducible; thanks to Chris Lamb for the patch
     (Closes: #920411)
+  * Drop implicit libraries from pkg-config script
 
  -- Roberto C. Sanchez <[email protected]>  Fri, 22 Feb 2019 22:37:09 -0500
 

debian/patches/0001_drop_implicit_link_libraries_from_pkg-config.patch

@@ -0,0 +1,15 @@
+Description: Prevent implicit libraries (e.g., pthread, gcc, gcc_s) from ending up in pkg-config script.
+Author: Roberto C. Sánchez <[email protected]>
+diff --git a/src/libbson/CMakeLists.txt b/src/libbson/CMakeLists.txt
+index 6abc1f72f..677192db5 100644
+--- a/src/libbson/CMakeLists.txt
++++ b/src/libbson/CMakeLists.txt
+@@ -334,7 +334,7 @@ if (ENABLE_APPLE_FRAMEWORK)
+ endif ()
+ 
+ set (LIBBSON_LIBRARIES "")
+-foreach (_lib ${CMAKE_C_IMPLICIT_LINK_LIBRARIES} ${BSON_LIBRARIES})
++foreach (_lib ${BSON_LIBRARIES})
+    if (_lib MATCHES ".*/.*" OR _lib MATCHES "^-")
+       set (LIBBSON_LIBRARIES "${LIBBSON_LIBRARIES} ${_lib}")
+    else ()

debian/patches/series

@@ -0,0 +1 @@
+0001_drop_implicit_link_libraries_from_pkg-config.patch