server: Check that constructor attributes work on the system

1 files changed, 10 insertions, 0 deletions

diff --git a/main.c b/main.c
index 78c98cb..bec763f 100644
--- a/main.c
+++ b/main.c
@@ -148,7 +148,17 @@ void signal_handler(int sig){
 	}
 }
 
+static bool constructors_work = false;
+
+__attribute__((constructor))
+static void constructor(void) { constructors_work = true; }
+
 int main(int argc,char **argv){
+	if (!constructors_work) {
+		fprintf(stderr, "This platform does not support application constructors, which tomsg requires\n");
+		return 1;
+	}
+
 	srandomdev();
 	if(sodium_init()<0){
 		fprintf(stderr,"Could not initialise libsodium!\n");