Multi-file BPF C builds (#2393)

programs/bpf/c/src/bench_alu/test_bench_alu.c

@@ -0,0 +1,11 @@
+#include <criterion/criterion.h>
+#include "bench_alu.c"
+
+Test(bench_alu, sanity) {
+  uint64_t input[] = {500, 0};
+
+  cr_assert(entrypoint((uint8_t *) input));
+
+  cr_assert_eq(input[0], 500);
+  cr_assert_eq(input[1], 5);
+}

programs/bpf/c/src/multiple_file/entrypoint.c

@@ -0,0 +1,14 @@
+/**
+ * @brief Example C-based BPF program that prints out the parameters
+ * passed to it
+ */
+#include <solana_sdk.h>
+
+#include "helper.h"
+
+extern bool entrypoint(const uint8_t *input) {
+  sol_log(__FILE__);
+  helper_function();
+  sol_log(__FILE__);
+  return true;
+}

programs/bpf/c/src/multiple_file/helper.c

@@ -0,0 +1,11 @@
+/**
+ * @brief Example C-based BPF program that prints out the parameters
+ * passed to it
+ */
+#include <solana_sdk.h>
+
+#include "helper.h"
+
+void helper_function(void) {
+  sol_log(__FILE__);
+}

programs/bpf/c/src/multiple_file/helper.h

@@ -0,0 +1,7 @@
+/**
+ * @brief Example C-based BPF program that prints out the parameters
+ * passed to it
+ */
+#include <solana_sdk.h>
+
+void helper_function(void);

programs/bpf/c/src/noop/noop.c

@@ -28,3 +28,4 @@ extern bool entrypoint(const uint8_t *input) {
   sol_log_params(ka, ka_len, data, data_len);
   return true;
 }
+