Resolve warning: "implicit declaration of function ‘getopt’ [-Wimplicit-function-declaration]"
Building 21.0.3.0 resulted in the following:
/mnt/lustre/admin/software/src/poppler/poppler-21.03.0/glib/tests/pdfdrawbb.c:64:19: warning: implicit declaration of function ‘getopt’ [-Wimplicit-function-declaration]
while ((opt = getopt(argc, argv, "h")) != -1)
^~~~~~
/mnt/lustre/admin/software/src/poppler/poppler-21.03.0/glib/tests/pdfdrawbb.c:71:30: error: ‘optind’ undeclared (first use in this function)
if (!usage && argc - 1 < optind) {
Explicitly including getopt.h resolved this.