[babl] Fix build, links.

[Øyvind Kolås <ok src gnome org>]

commit 9b68ee30df359d7a85b5d31e1622c0190f239dd1
Author: Félix Piédallu <felix piedallu me>
Date:   Thu Nov 23 18:01:10 2017 +0100

    Fix build, links.

 babl/meson.build |    2 ++
 meson.build      |    6 ++++--
 2 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/babl/meson.build b/babl/meson.build
index 59cb88c..64bffdf 100644
--- a/babl/meson.build
+++ b/babl/meson.build
@@ -82,4 +82,6 @@ babl = library('babl',
   include_directories: [ rootInclude, bablBaseInclude],
   c_args:   [ '-DLIBDIR="' + get_option('libdir') + '"', ],
   cpp_args: [ '-DLIBDIR="' + get_option('libdir') + '"', ],
+  link_with: [ babl_base, ],
+  dependencies: [ math, thread, dl, ],
 )
diff --git a/meson.build b/meson.build
index 68aac9c..098e83e 100644
--- a/meson.build
+++ b/meson.build
@@ -116,8 +116,8 @@ platform_android = host_os.contains('android')
 
 path_sep = ( os_win32 ? ';'  : ':' )
 dirs_sep = ( os_win32 ? '\\' : '/' )
-conf.set('BABL_PATH_SEPARATOR', path_sep)
-conf.set('BABL_DIR_SEPARATOR',  dirs_sep)
+conf.set('BABL_PATH_SEPARATOR', '\'' + path_sep + '\'')
+conf.set_quoted('BABL_DIR_SEPARATOR',  dirs_sep)
 
 ################################################################################
 # Extra warnings
@@ -218,6 +218,8 @@ else
   log = []
 endif
 
+dl = cc.find_library('dl')
+
 
 pkgconfig.generate(filebase: 'babl',
   name: 'babl',