guix: platform: Add platform-rust-target.

* guix/platform.scm <platform>: Add rust-target field.
* guix/platforms/arm.scm (armv7-linux, aarch64-linux): Add the system's
rust target triplet.
* guix/platforms/mips.scm (mips64-linux):
* guix/platforms/powerpc.scm (powerpc-linux, powerpc64-linux,
powerpc64le-linux):
* guix/platforms/riscv.scm (riscv64-linux):
* guix/platforms/x86.scm (i686-linux, x86_64-linux, i686-mingw,
x86_64-mingw, i586-pc): Same.

Change-Id: Id9dca0fb8ec2b3bf2b3876b974e4bbaa30dbc6a6

6 files changed, 15 insertions, 0 deletions

diff --git a/guix/platform.scm b/guix/platform.scm
index 55917ca308..994563ab26 100644
--- a/guix/platform.scm
+++ b/guix/platform.scm
@@ -29,6 +29,7 @@
             platform-target
             platform-system
             platform-linux-architecture
+            platform-rust-target
             platform-glibc-dynamic-linker
 
             &platform-not-found-error
@@ -74,6 +75,8 @@
   (system               platform-system)
   (linux-architecture   platform-linux-architecture
                         (default #false))
+  (rust-target          platform-rust-target
+                        (default #false))
   (glibc-dynamic-linker platform-glibc-dynamic-linker))
 
 
diff --git a/guix/platforms/arm.scm b/guix/platforms/arm.scm
index 32c0fbc032..b0c76efc73 100644
--- a/guix/platforms/arm.scm
+++ b/guix/platforms/arm.scm
@@ -27,6 +27,7 @@
    (target "arm-linux-gnueabihf")
    (system "armhf-linux")
    (linux-architecture "arm")
+   (rust-target "armv7-unknown-linux-gnueabihf")
    (glibc-dynamic-linker "/lib/ld-linux-armhf.so.3")))
 
 (define aarch64-linux
@@ -34,4 +35,5 @@
    (target "aarch64-linux-gnu")
    (system "aarch64-linux")
    (linux-architecture "arm64")
+   (rust-target "aarch64-unknown-linux-gnu")
    (glibc-dynamic-linker "/lib/ld-linux-aarch64.so.1")))
diff --git a/guix/platforms/mips.scm b/guix/platforms/mips.scm
index e6fa9eb292..17b6958f48 100644
--- a/guix/platforms/mips.scm
+++ b/guix/platforms/mips.scm
@@ -26,4 +26,5 @@
    (target "mips64el-linux-gnu")
    (system "mips64el-linux")
    (linux-architecture "mips")
+   (rust-target "mips64el-unknown-linux-gnuabi64")
    (glibc-dynamic-linker "/lib/ld.so.1")))
diff --git a/guix/platforms/powerpc.scm b/guix/platforms/powerpc.scm
index 1c7141ab42..c55301768d 100644
--- a/guix/platforms/powerpc.scm
+++ b/guix/platforms/powerpc.scm
@@ -28,6 +28,7 @@
    (target "powerpc-linux-gnu")
    (system "powerpc-linux")
    (linux-architecture "powerpc")
+   (rust-target "powerpc-unknown-linux-gnu")
    (glibc-dynamic-linker "/lib/ld.so.1")))
 
 (define powerpc64-linux
@@ -35,6 +36,7 @@
    (target "powerpc64-linux-gnu")
    (system #f)                                    ;not supported
    (linux-architecture "powerpc")
+   (rust-target "powerpc64-unknown-linux-gnu")
    (glibc-dynamic-linker "/lib/ld64.so.1")))
 
 (define powerpc64le-linux
@@ -42,4 +44,5 @@
    (target "powerpc64le-linux-gnu")
    (system "powerpc64le-linux")
    (linux-architecture "powerpc")
+   (rust-target "powerpc64le-unknown-linux-gnu")
    (glibc-dynamic-linker "/lib/ld64.so.2")))
diff --git a/guix/platforms/riscv.scm b/guix/platforms/riscv.scm
index c716c12c12..1b34e82b36 100644
--- a/guix/platforms/riscv.scm
+++ b/guix/platforms/riscv.scm
@@ -26,4 +26,5 @@
    (target "riscv64-linux-gnu")
    (system "riscv64-linux")
    (linux-architecture "riscv")
+   (rust-target "riscv64gc-unknown-linux-gnu")
    (glibc-dynamic-linker "/lib/ld-linux-riscv64-lp64d.so.1")))
diff --git a/guix/platforms/x86.scm b/guix/platforms/x86.scm
index 6f547dd770..4ed5638c14 100644
--- a/guix/platforms/x86.scm
+++ b/guix/platforms/x86.scm
@@ -30,6 +30,7 @@
    (target "i686-linux-gnu")
    (system "i686-linux")
    (linux-architecture "i386")
+   (rust-target "i686-unknown-linux-gnu")
    (glibc-dynamic-linker "/lib/ld-linux.so.2")))
 
 (define x86_64-linux
@@ -37,22 +38,26 @@
    (target "x86_64-linux-gnu")
    (system "x86_64-linux")
    (linux-architecture "x86_64")
+   (rust-target "x86_64-unknown-linux-gnu")
    (glibc-dynamic-linker "/lib/ld-linux-x86-64.so.2")))
 
 (define i686-mingw
   (platform
    (target "i686-w64-mingw32")
    (system #f)
+   (rust-target "i686-pc-windows-gnu")
    (glibc-dynamic-linker #f)))
 
 (define x86_64-mingw
   (platform
    (target "x86_64-w64-mingw32")
    (system #f)
+   (rust-target "x86_64-pc-windows-gnu")
    (glibc-dynamic-linker #f)))
 
 (define i586-gnu
   (platform
    (target "i586-pc-gnu")
    (system "i586-gnu")
+   (rust-target "i686-unknown-hurd-gnu")
    (glibc-dynamic-linker "/lib/ld.so.1")))