[folks] build: Add -no-undefined to all LDFLAGS

[Philip Withnall <pwithnall src gnome org>]

commit b2660ca904e31b62ad0418327af3c8ce9aecb244
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Tue Jan 20 10:31:42 2015 +0000

    build: Add -no-undefined to all LDFLAGS
    
    Let’s not get caught by the linker failing on undefined symbols again.

 backends/backend-library.mk |    1 +
 backends/backend.mk         |    1 +
 folks/Makefile.am           |    5 ++++-
 3 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/backends/backend-library.mk b/backends/backend-library.mk
index 2f54a5e..7737c6e 100644
--- a/backends/backend-library.mk
+++ b/backends/backend-library.mk
@@ -124,6 +124,7 @@ backend_library_libadd = \
 backend_library_ldflags_generic = \
        $(AM_LDFLAGS) \
        $(CODE_COVERAGE_LDFLAGS) \
+       -no-undefined \
        $(NULL)
 backend_library_ldflags = \
        $(backend_library_ldflags_generic) \
diff --git a/backends/backend.mk b/backends/backend.mk
index aa5fc67..c364671 100644
--- a/backends/backend.mk
+++ b/backends/backend.mk
@@ -79,4 +79,5 @@ backend_ldflags = \
        -fPIC \
        -module \
        -avoid-version \
+       -no-undefined \
        $(NULL)
diff --git a/folks/Makefile.am b/folks/Makefile.am
index a4af6aa..f5d0b25 100644
--- a/folks/Makefile.am
+++ b/folks/Makefile.am
@@ -55,6 +55,7 @@ libfolks_internal_la_CFLAGS = \
 libfolks_internal_la_LDFLAGS = \
        $(AM_LDFLAGS) \
        $(CODE_COVERAGE_LDFLAGS) \
+       -no-undefined \
        $(NULL)
 
 libfolks_internal_la_LIBADD = \
@@ -160,7 +161,9 @@ libfolks_la_LIBADD = \
 libfolks_la_LDFLAGS = \
        $(AM_LDFLAGS) \
        $(CODE_COVERAGE_LDFLAGS) \
-       -version-info "$(LT_CURRENT)":"$(LT_REVISION)":"$(LT_AGE)"
+       -version-info "$(LT_CURRENT)":"$(LT_REVISION)":"$(LT_AGE)" \
+       -no-undefined \
+       $(NULL)
 
 folksdir = $(includedir)/folks
 folks_HEADERS = folks.h