auto merge of #20024 : mneumann/rust/dragonfly-fixes3, r=alexcrichton

mk/cfg/x86_64-unknown-dragonfly.mk

@@ -7,9 +7,9 @@ CFG_LIB_NAME_x86_64-unknown-dragonfly=lib$(1).so
 CFG_STATIC_LIB_NAME_x86_64-unknown-dragonfly=lib$(1).a
 CFG_LIB_GLOB_x86_64-unknown-dragonfly=lib$(1)-*.so
 CFG_LIB_DSYM_GLOB_x86_64-unknown-dragonfly=$(1)-*.dylib.dSYM
-CFG_JEMALLOC_CFLAGS_x86_64-unknown-dragonfly := -I/usr/include -I/usr/local/include $(CFLAGS)
+CFG_JEMALLOC_CFLAGS_x86_64-unknown-dragonfly := -m64 -I/usr/include -I/usr/local/include $(CFLAGS)
-CFG_GCCISH_CFLAGS_x86_64-unknown-dragonfly := -Wall -Werror -g -fPIC -I/usr/include -I/usr/local/include $(CFLAGS)
+CFG_GCCISH_CFLAGS_x86_64-unknown-dragonfly := -Wall -Werror -g -fPIC -m64 -I/usr/include -I/usr/local/include $(CFLAGS)
-CFG_GCCISH_LINK_FLAGS_x86_64-unknown-dragonfly := -shared -fPIC -g -pthread  -lrt
+CFG_GCCISH_LINK_FLAGS_x86_64-unknown-dragonfly := -shared -fPIC -g -pthread  -lrt -m64
 CFG_GCCISH_DEF_FLAG_x86_64-unknown-dragonfly := -Wl,--export-dynamic,--dynamic-list=
 CFG_GCCISH_PRE_LIB_FLAGS_x86_64-unknown-dragonfly := -Wl,-whole-archive
 CFG_GCCISH_POST_LIB_FLAGS_x86_64-unknown-dragonfly := -Wl,-no-whole-archive

src/etc/snapshot.py

@@ -37,6 +37,7 @@ snapshot_files = {
     "macos": ["bin/rustc"],
     "winnt": ["bin/rustc.exe"],
     "freebsd": ["bin/rustc"],
+    "dragonfly": ["bin/rustc"],
     }
 
 winnt_runtime_deps_32 = ["libgcc_s_dw2-1.dll",
@@ -86,6 +87,8 @@ def get_kernel(triple):
         return "macos"
     if os_name == "freebsd":
         return "freebsd"
+    if os_name == "dragonfly":
+        return "dragonfly"
     return "linux"
 
 def get_cpu(triple):

src/liblibc/lib.rs

@@ -1095,6 +1095,7 @@ pub mod types {
                 pub type sighandler_t = size_t;
             }
             pub mod bsd44 {
+                use types::common::c95::{c_void};
                 use types::os::arch::c95::{c_char, c_int, c_uint};
 
                 pub type socklen_t = u32;
@@ -1167,6 +1168,17 @@ pub mod types {
                     pub sun_family: sa_family_t,
                     pub sun_path: [c_char, ..104]
                 }
+                #[repr(C)]
+                #[deriving(Copy)] pub struct ifaddrs {
+                    pub ifa_next: *mut ifaddrs,
+                    pub ifa_name: *mut c_char,
+                    pub ifa_flags: c_uint,
+                    pub ifa_addr: *mut sockaddr,
+                    pub ifa_netmask: *mut sockaddr,
+                    pub ifa_dstaddr: *mut sockaddr,
+                    pub ifa_data: *mut c_void
+                }
+
             }
         }
 

src/librustc_back/rpath.rs

@@ -215,22 +215,7 @@ mod test {
     }
 
     #[test]
-    #[cfg(target_os = "freebsd")]
+    #[cfg(any(target_os = "freebsd", target_os = "dragonfly"))]
-    fn test_rpath_relative() {
-        let config = &mut RPathConfig {
-            used_crates: Vec::new(),
-            has_rpath: true,
-            is_like_osx: false,
-            out_filename: Path::new("bin/rustc"),
-            get_install_prefix_lib_path: || panic!(),
-            realpath: |p| Ok(p.clone())
-        };
-        let res = get_rpath_relative_to_output(config, &Path::new("lib/libstd.so"));
-        assert_eq!(res, "$ORIGIN/../lib");
-    }
-
-    #[test]
-    #[cfg(target_os = "dragonfly")]
     fn test_rpath_relative() {
         let config = &mut RPathConfig {
             used_crates: Vec::new(),

src/librustc_back/target/dragonfly_base.rs

@@ -17,13 +17,18 @@ pub fn opts() -> TargetOptions {
         dynamic_linking: true,
         executables: true,
         morestack: true,
+        linker_is_gnu: true,
         has_rpath: true,
         pre_link_args: vec!(
             "-L/usr/local/lib".to_string(),
-            "-L/usr/local/lib/gcc47".to_string(),
+            "-L/usr/lib/gcc47".to_string(),
-            "-L/usr/local/lib/gcc44".to_string(),
+            // GNU-style linkers will use this to omit linking to libraries
+            // which don't actually fulfill any relocations, but only for
+            // libraries which follow this flag.  Thus, use it before
+            // specifying libraries to link to.
+            "-Wl,--as-needed".to_string(),
         ),
-
+        position_independent_executables: true,
         .. Default::default()
     }
 }

src/librustc_back/target/x86_64_unknown_dragonfly.rs

@@ -11,13 +11,18 @@
 use target::Target;
 
 pub fn target() -> Target {
+    let mut base = super::dragonfly_base::opts();
+    base.pre_link_args.push("-m64".to_string());
+
     Target {
-        data_layout: "e-p:32:32-f64:32:64-i64:32:64-f80:32:32-n8:16:32".to_string(),
+        data_layout: "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-\
+                     f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-\
+                     s0:64:64-f80:128:128-n8:16:32:64-S128".to_string(),
         llvm_target: "x86_64-unknown-dragonfly".to_string(),
         target_endian: "little".to_string(),
-        target_word_size: "32".to_string(),
+        target_word_size: "64".to_string(),
         arch: "x86_64".to_string(),
         target_os: "dragonfly".to_string(),
-        options: super::dragonfly_base::opts()
+        options: base,
     }
 }

src/libstd/sys/unix/os.rs

@@ -172,7 +172,7 @@ pub fn join_paths<T: BytesContainer>(paths: &[T]) -> Result<Vec<u8>, &'static st
     Ok(joined)
 }
 
-#[cfg(any(target_os = "freebsd", target_os = "dragonfly"))]
+#[cfg(target_os = "freebsd")]
 pub fn load_self() -> Option<Vec<u8>> {
     unsafe {
         use libc::funcs::bsd44::*;
@@ -198,6 +198,16 @@ pub fn load_self() -> Option<Vec<u8>> {
     }
 }
 
+#[cfg(target_os = "dragonfly")]
+pub fn load_self() -> Option<Vec<u8>> {
+    use std::io;
+
+    match io::fs::readlink(&Path::new("/proc/curproc/file")) {
+        Ok(path) => Some(path.into_vec()),
+        Err(..) => None
+    }
+}
+
 #[cfg(any(target_os = "linux", target_os = "android"))]
 pub fn load_self() -> Option<Vec<u8>> {
     use std::io;