[folks/wip/nielsdg/reenable-profiling-code] meson: Add option to building profiling code

[Niels De Graef <nielsdg src gnome org>]

commit badf884fc0efcb111a20152241046ec775a95128
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Thu Oct 3 22:40:06 2019 +0200

    meson: Add option to building profiling code
    
    This is a regression after poritng the build system from Autotools to
    Meson.
    
    Fixes https://gitlab.gnome.org/GNOME/folks/issues/115

 folks/meson.build | 7 +++++++
 meson_options.txt | 2 ++
 2 files changed, 9 insertions(+)
---
diff --git a/folks/meson.build b/folks/meson.build
index 25fb974c..e3700509 100644
--- a/folks/meson.build
+++ b/folks/meson.build
@@ -13,10 +13,17 @@ libfolks_internal_deps = [
   posix_dep,
 ]
 
+libfolks_internal_vala_flags = []
+
+if get_option('profiling')
+  libfolks_internal_vala_flags += '-DENABLE_PROFILING'
+endif
+
 libfolks_internal = static_library('folks-internal',
   libfolks_internal_sources,
   include_directories: include_directories('..'),
   dependencies: libfolks_internal_deps,
+  vala_args: libfolks_internal_vala_flags,
 )
 
 libfolks_internal_dep = declare_dependency(
diff --git a/meson_options.txt b/meson_options.txt
index 042a72e8..43cd586a 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -8,6 +8,8 @@ option('zeitgeist', type: 'boolean', value: false, description: 'build Zeitgeist
 # Tools
 option('import_tool', type: 'boolean', value: true, description: 'Enable building the meta-contact import 
tool')
 option('inspect_tool', type: 'boolean', value: true, description: 'Enable building the data inspection tool')
+# Profiling
+option('profiling', type: 'boolean', value: false, description: 'Enable profiling code')
 # Test options
 option('installed_tests', type: 'boolean', value: false, description: 'Install test programs')
 # Docs