From 85ca0df98988cdb235e1d0cb9b156affc5afc80e Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Mon, 25 Oct 2021 06:53:45 +0100
Subject: frida mode musl build fix

---
 frida_mode/GNUmakefile                    | 3 +++
 frida_mode/src/seccomp/seccomp_callback.c | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/frida_mode/GNUmakefile b/frida_mode/GNUmakefile
index ed35c9f6..b5fee7a6 100644
--- a/frida_mode/GNUmakefile
+++ b/frida_mode/GNUmakefile
@@ -78,6 +78,9 @@ endif
 
 ifeq "$(shell uname)" "Linux"
  OS:=linux
+ ifneq "$(findstring musl, $(shell ldd --version 2>&1 | head -n 1))" ""
+  CFLAGS+=       -D__MUSL__
+ endif
 endif
 
 ifneq "$(findstring android, $(shell $(CC) --version 2>/dev/null))" ""
diff --git a/frida_mode/src/seccomp/seccomp_callback.c b/frida_mode/src/seccomp/seccomp_callback.c
index a88196ac..bc488489 100644
--- a/frida_mode/src/seccomp/seccomp_callback.c
+++ b/frida_mode/src/seccomp/seccomp_callback.c
@@ -1,6 +1,8 @@
 #if defined(__linux__) && !defined(__ANDROID__)
 
+#if !defined(__MUSL__)
   #include <execinfo.h>
+#endif
   #include <fcntl.h>
 
   #include "seccomp.h"
@@ -29,6 +31,7 @@ static void seccomp_callback_filter(struct seccomp_notif *     req,
       req->data.args[0], req->data.args[1], req->data.args[2],
       req->data.args[3], req->data.args[4], req->data.args[5]);
 
+#if !defined(__MUSL__)
   seccomp_print("FRAMES: (%u)\n", frames->len);
   char **syms = backtrace_symbols(frames->items, frames->len);
   if (syms == NULL) { FATAL("Failed to get symbols"); }
@@ -49,6 +52,7 @@ static void seccomp_callback_filter(struct seccomp_notif *     req,
   }
 
   free(syms);
+#endif
 
   resp->error = 0;
   resp->val = 0;
-- 
cgit 1.4.1