From 80311116609bdf5d414a632cea0959f0c29cccda Mon Sep 17 00:00:00 2001
From: Dominik Maier <domenukk@gmail.com>
Date: Thu, 27 Jun 2024 01:19:45 +0200
Subject: [PATCH] Make ddg map compilation optional (#2341)

* Make ddg map compilation optional

* undo

* undo
---
 libafl_cc/Cargo.toml                       |  3 +++
 libafl_cc/build.rs                         | 30 +++++++++++-----------
 libafl_qemu/libafl_qemu_build/src/build.rs |  2 +-
 3 files changed, 19 insertions(+), 16 deletions(-)

diff --git a/libafl_cc/Cargo.toml b/libafl_cc/Cargo.toml
index 94e18d5ad3..1db1078766 100644
--- a/libafl_cc/Cargo.toml
+++ b/libafl_cc/Cargo.toml
@@ -13,6 +13,9 @@ categories = ["development-tools::testing", "emulators", "embedded", "os", "no-s
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[features]
+default = []
+
 [build-dependencies]
 cc = { version = "1.0", features = ["parallel"] }
 which = "6.0"
diff --git a/libafl_cc/build.rs b/libafl_cc/build.rs
index 1b44657b13..5c70204bc1 100644
--- a/libafl_cc/build.rs
+++ b/libafl_cc/build.rs
@@ -152,7 +152,7 @@ fn build_pass(
     src_dir: &Path,
     src_file: &str,
     additional_srcfiles: Option<&Vec<&str>>,
-    optional: bool,
+    required: bool,
 ) {
     let dot_offset = src_file.rfind('.').unwrap();
     let src_stub = &src_file[..dot_offset];
@@ -164,7 +164,7 @@ fn build_pass(
     };
 
     println!("cargo:rerun-if-changed=src/{src_file}");
-    let r = if cfg!(unix) {
+    let command_result = if cfg!(unix) {
         let r = Command::new(bindir_path.join("clang++"))
             .arg("-v")
             .arg(format!("--target={}", env::var("HOST").unwrap()))
@@ -198,27 +198,27 @@ fn build_pass(
         None
     };
 
-    match r {
-        Some(r) => match r {
+    match command_result {
+        Some(res) => match res {
             Ok(s) => {
                 if !s.success() {
-                    if optional {
-                        println!("cargo:warning=Skipping src/{src_file} - Exit status: {s}");
+                    if required {
+                        panic!("Failed to compile required compiler pass src/{src_file} - Exit status: {s}");
                     } else {
-                        panic!("Failed to compile {src_file} - Exit status: {s}");
+                        println!("cargo:warning=Skipping non-required compiler pass src/{src_file} - Reason: Exit status {s}");
                     }
                 }
             }
             Err(err) => {
-                if optional {
-                    println!("cargo:warning=Skipping src/{src_file} - {err}");
+                if required {
+                    panic!("Failed to compile required compiler pass src/{src_file} - {err}");
                 } else {
-                    panic!("Failed to compile {src_file} - {err}");
+                    println!("cargo:warning=Skipping non-required compiler pass src/{src_file} - Reason: {err}");
                 }
             }
         },
         None => {
-            println!("cargo:warning=Skipping src/{src_file} - Only supported on Windows or *nix.");
+            println!("cargo:warning=Skipping compiler pass src/{src_file} - Only supported on Windows or *nix.");
         }
     }
 }
@@ -427,7 +427,7 @@ pub const LIBAFL_CC_LLVM_VERSION: Option<usize> = None;
         false,
     );
 
-    for pass in &[
+    for pass in [
         "function-logging.cc",
         "cmplog-routines-pass.cc",
         "autotokens-pass.cc",
@@ -443,12 +443,12 @@ pub const LIBAFL_CC_LLVM_VERSION: Option<usize> = None;
             src_dir,
             pass,
             None,
-            false,
+            true,
         );
     }
 
     // Optional pass
-    for pass in &["dump-cfg-pass.cc", "profiling.cc"] {
+    for pass in ["dump-cfg-pass.cc", "profiling.cc"] {
         build_pass(
             bindir_path,
             out_dir,
@@ -457,7 +457,7 @@ pub const LIBAFL_CC_LLVM_VERSION: Option<usize> = None;
             src_dir,
             pass,
             None,
-            true,
+            false,
         );
     }
 
diff --git a/libafl_qemu/libafl_qemu_build/src/build.rs b/libafl_qemu/libafl_qemu_build/src/build.rs
index d7aaafe5cd..9b28b130c1 100644
--- a/libafl_qemu/libafl_qemu_build/src/build.rs
+++ b/libafl_qemu/libafl_qemu_build/src/build.rs
@@ -434,7 +434,7 @@ pub fn build(
 
     /*
     let mut objects = vec![];
-    for dir in &[
+    for dir in [
         build_dir.join("libcommon.fa.p"),
         build_dir.join(format!("libqemu-{cpu_target}-{target_suffix}.fa.p")),
     ] {