Auto merge of #41965 - Mark-Simulacrum:rollup, r=Mark-Simulacrum

Rollup of 15 pull requests

- Successful merges: #41820, #41860, #41876, #41896, #41912, #41916, #41918, #41921, #41923, #41934, #41935, #41940, #41942, #41943, #41951
- Failed merges:

3 files changed, 21 insertions, 1 deletions

diff --git a/src/bootstrap/config.rs b/src/bootstrap/config.rs
index 34fbc33d981..9c536111811 100644
--- a/src/bootstrap/config.rs
+++ b/src/bootstrap/config.rs
@@ -264,7 +264,7 @@ impl Config {
             let table = match p.parse() {
                 Some(table) => table,
                 None => {
-                    println!("failed to parse TOML configuration:");
+                    println!("failed to parse TOML configuration '{}':", file.to_str().unwrap());
                     for err in p.errors.iter() {
                         let (loline, locol) = p.to_linecol(err.lo);
                         let (hiline, hicol) = p.to_linecol(err.hi);
diff --git a/src/bootstrap/config.toml.example b/src/bootstrap/config.toml.example
index 0309eca0e5d..25da976a555 100644
--- a/src/bootstrap/config.toml.example
+++ b/src/bootstrap/config.toml.example
@@ -175,6 +175,9 @@
 [rust]
 
 # Whether or not to optimize the compiler and standard library
+# Note: the slowness of the non optimized compiler compiling itself usually
+#       outweighs the time gains in not doing optimizations, therefore a
+#       full bootstrap takes much more time with optimize set to false.
 #optimize = true
 
 # Number of codegen units to use for each compiler invocation. A value of 0
diff --git a/src/bootstrap/native.rs b/src/bootstrap/native.rs
index 3d87f701b2a..67edd70a156 100644
--- a/src/bootstrap/native.rs
+++ b/src/bootstrap/native.rs
@@ -309,11 +309,15 @@ pub fn openssl(build: &Build, target: &str) {
     configure.arg("no-ssl3");
 
     let os = match target {
+        "aarch64-linux-android" => "linux-aarch64",
         "aarch64-unknown-linux-gnu" => "linux-aarch64",
+        "arm-linux-androideabi" => "android",
         "arm-unknown-linux-gnueabi" => "linux-armv4",
         "arm-unknown-linux-gnueabihf" => "linux-armv4",
+        "armv7-linux-androideabi" => "android-armv7",
         "armv7-unknown-linux-gnueabihf" => "linux-armv4",
         "i686-apple-darwin" => "darwin-i386-cc",
+        "i686-linux-android" => "android-x86",
         "i686-unknown-freebsd" => "BSD-x86-elf",
         "i686-unknown-linux-gnu" => "linux-elf",
         "i686-unknown-linux-musl" => "linux-elf",
@@ -326,6 +330,7 @@ pub fn openssl(build: &Build, target: &str) {
         "powerpc64le-unknown-linux-gnu" => "linux-ppc64le",
         "s390x-unknown-linux-gnu" => "linux64-s390x",
         "x86_64-apple-darwin" => "darwin64-x86_64-cc",
+        "x86_64-linux-android" => "linux-x86_64",
         "x86_64-unknown-freebsd" => "BSD-x86_64",
         "x86_64-unknown-linux-gnu" => "linux-x86_64",
         "x86_64-unknown-linux-musl" => "linux-x86_64",
@@ -337,6 +342,18 @@ pub fn openssl(build: &Build, target: &str) {
     for flag in build.cflags(target) {
         configure.arg(flag);
     }
+    // There is no specific os target for android aarch64 or x86_64,
+    // so we need to pass some extra cflags
+    if target == "aarch64-linux-android" || target == "x86_64-linux-android" {
+        configure.arg("-mandroid");
+        configure.arg("-fomit-frame-pointer");
+    }
+    // Make PIE binaries
+    // Non-PIE linker support was removed in Lollipop
+    // https://source.android.com/security/enhancements/enhancements50
+    if target == "i686-linux-android" {
+        configure.arg("no-asm");
+    }
     configure.current_dir(&obj);
     println!("Configuring openssl for {}", target);
     build.run_quiet(&mut configure);