Scanneur epson stylus sx405

pisa_main_window.cc: In member function 'GtkWidget* main_window::create_window(GtkWidget*)':
pisa_main_window.cc:531: erreur: 'getenv' was not declared in this scope
pisa_main_window.cc: In member function 'void main_window::create_controls()':
pisa_main_window.cc:826: erreur: 'getenv' was not declared in this scope
pisa_main_window.cc: In member function 'GtkWidget* main_window::create_target(const scan_manager*)':
pisa_main_window.cc:1292: erreur: 'getenv' was not declared in this scope
pisa_main_window.cc: In member function 'GtkWidget* main_window::create_options()':
pisa_main_window.cc:1354: erreur: 'getenv' was not declared in this scope
make[2]: *** [iscan-pisa_main_window.o] Erreur 1
make[2]: quittant le répertoire « /home/matser/telech/200911/iscan-2.22.1/frontend »
make[1]: *** [all-recursive] Erreur 1
make[1]: quittant le répertoire « /home/matser/telech/200911/iscan-2.22.1 »
make: *** [all] Erreur 2