Make DCPoMatic compatible with ICU >= 75

ICU >= 75 uses c++17 features and therefore requires compilation with
-std=c++17. However, this causes some namespace issues in
src/wx/file_picker_ctrl.cc and
src/wx/film_name_location_dialog.cc
between boost::optional, boost::filesystem and the corresponding
names from the std lib.

The patch fixes this namespace issues and adds a version check in
wscript to enable compilation with c++17, if icu >= 75 is detected.

1 files changed, 4 insertions, 0 deletions

diff --git a/wscript b/wscript
index 5aeb4f1c3..d418ab6f4 100644
--- a/wscript
+++ b/wscript
@@ -252,6 +252,10 @@ def configure(conf):
                        lib=['icuio', 'icui18n', 'icudata', 'icuuc'],
                        uselib_store='ICU')
 
+    # For ICU version > 75 we need stdc++17
+    if conf.check_cfg(modversion='icu-i18n') >= '75':
+        conf.env.append_value('CXXFLAGS', '-std=c++17')
+
     # libsamplerate
     conf.check_cfg(package='samplerate', args='--cflags --libs', uselib_store='SAMPLERATE', mandatory=True)