add support for i586-unknown-linux-gnu

Closes #156 .

Author: gnzlbg

.travis.yml

@@ -12,6 +12,7 @@ matrix:
     - env: TARGET=arm-unknown-linux-musleabi                    STD=1                RUN=1
     - env: TARGET=armv7-unknown-linux-gnueabihf   CPP=1 DYLIB=1 STD=1 OPENSSL=0.5.5  RUN=1
     - env: TARGET=armv7-unknown-linux-musleabihf                STD=1                RUN=1
+    - env: TARGET=i586-unknown-linux-gnu          CPP=1 DYLIB=1 STD=1 OPENSSL=0.5.5  RUN=1
     - env: TARGET=i686-unknown-linux-gnu          CPP=1 DYLIB=1 STD=1 OPENSSL=0.5.5  RUN=1
     - env: TARGET=i686-unknown-linux-musl                       STD=1 OPENSSL=0.5.5  RUN=1
     - env: TARGET=mips-unknown-linux-gnu          CPP=1 DYLIB=1 STD=1 OPENSSL=0.5.5  RUN=1

CHANGELOG.md

@@ -5,6 +5,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+- Support for the `i586-unknown-linux-gnu` target.
+
 ## [v0.1.13] - 2017-11-08
 
 ### Added

README.md

@@ -198,6 +198,7 @@ worst, "hang" (never terminate).
 | `armv7-unknown-linux-gnueabihf`      | 2.15   | 4.6.2   | 1.0.2m  | ✓   | 2.8.0 |   ✓    |
 | `armv7-unknown-linux-musleabihf`     | 1.1.15 | 5.3.1   | N/A     |     | 2.8.0 |   ✓    |
 | `asmjs-unknown-emscripten` [4]       | 1.1.15 | 1.37.13 | N/A     | ✓   | N/A   |   ✓    |
+| `i586-unknown-linux-gnu`             | 2.15   | 4.6.2   | 1.0.2m  | ✓   | N/A   |   ✓    |
 | `i686-linux-android` [5]             | N/A    | 4.9     | 1.0.2m  | ✓   | N/A   |   ✓    |
 | `i686-pc-windows-gnu`                | N/A    | 6.2.0   | N/A     | ✓   | N/A   |   ✓    |
 | `i686-unknown-freebsd` [1]           | 10.2   | 5.3.0   | 1.0.2m  |     | N/A   |        |

docker/i586-unknown-linux-gnu/Dockerfile

@@ -0,0 +1,27 @@
+FROM ubuntu:17.04
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    ca-certificates \
+    cmake \
+    gcc \
+    libc6-dev \
+    make \
+    file \
+    pkg-config
+
+COPY xargo.sh /
+RUN bash /xargo.sh
+
+COPY cmake.sh /
+RUN apt-get purge --auto-remove -y cmake && \
+    bash /cmake.sh 2.8.11
+
+COPY openssl.sh /
+RUN apt-get install -y --no-install-recommends \
+    g++-multilib && \
+    bash /openssl.sh linux-elf "" -m32
+
+ENV OPENSSL_DIR=/openssl \
+    OPENSSL_INCLUDE_DIR=/openssl/include \
+    OPENSSL_LIB_DIR=/openssl/lib

src/main.rs

@@ -98,6 +98,7 @@ pub enum Target {
     ArmUnknownLinuxMusleabi,
     Armv7UnknownLinuxGnueabihf,
     Armv7UnknownLinuxMusleabihf,
+    I586UnknownLinuxGnu,
     I686UnknownLinuxGnu,
     I686UnknownLinuxMusl,
     Mips64UnknownLinuxGnuabi64,
@@ -199,6 +200,7 @@ impl Target {
             Target::ArmUnknownLinuxMusleabi |
             Target::Armv7UnknownLinuxGnueabihf |
             Target::Armv7UnknownLinuxMusleabihf |
+            Target::I586UnknownLinuxGnu |
             Target::I686UnknownLinuxGnu |
             Target::I686UnknownLinuxMusl |
             Target::Mips64UnknownLinuxGnuabi64 |
@@ -236,6 +238,7 @@ impl Target {
                        !triple.starts_with("i586") &&
                        !triple.starts_with("i686")
             }
+            Target::I586UnknownLinuxGnu |
             Target::I686UnknownLinuxGnu |
             Target::I686UnknownLinuxMusl |
             Target::X86_64UnknownLinuxGnu |
@@ -262,6 +265,7 @@ impl Target {
             Armv7UnknownLinuxGnueabihf => "armv7-unknown-linux-gnueabihf",
             Armv7UnknownLinuxMusleabihf => "armv7-unknown-linux-musleabihf",
             AsmjsUnknownEmscripten => "asmjs-unknown-emscripten",
+            I586UnknownLinuxGnu => "i586-unknown-linux-gnu",
             I686AppleDarwin => "i686-apple-darwin",
             I686LinuxAndroid => "i686-linux-android",
             I686PcWindowsGnu => "i686-pc-windows-gnu",
@@ -314,6 +318,7 @@ impl Target {
             "armv7-unknown-linux-gnueabihf" => Armv7UnknownLinuxGnueabihf,
             "armv7-unknown-linux-musleabihf" => Armv7UnknownLinuxMusleabihf,
             "asmjs-unknown-emscripten" => AsmjsUnknownEmscripten,
+            "i586-unknown-linux-gnu" => I586UnknownLinuxGnu,
             "i686-apple-darwin" => I686AppleDarwin,
             "i686-linux-android" => I686LinuxAndroid,
             "i686-pc-windows-gnu" => I686PcWindowsGnu,