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Define rustc's host triple at compile time 

This way a cross-compiled rustc's answer to host_triple() is correct. The return
value of host_triple() reflects the actual host triple that the compiler was
build for, not the triple the compiler is being built on
This commit is contained in:
Alex Crichton 2013-05-25 01:05:31 -05:00
parent 5f90f1ca1d
commit ff86830c9c
3 changed files with 19 additions and 12 deletions
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6
mk/target.mk
View File

@ -8,6 +8,11 @@
# option. This file may not be copied, modified, or distributed
# except according to those terms.
# This is the compile-time target-triple for the compiler. For the compiler at
# runtime, this should be considered the host-triple. More explanation for why
# this exists can be found on issue #2400
export CFG_COMPILER_TRIPLE
# TARGET_STAGE_N template: This defines how target artifacts are built
# for all stage/target architecture combinations. The arguments:
# $(1) is the stage
@ -62,6 +67,7 @@ $$(TLIB$(1)_T_$(2)_H_$(3))/$(CFG_RUSTLLVM_$(3)): \
@$$(call E, cp: $$@)
$$(Q)cp $$< $$@
$$(TLIB$(1)_T_$(2)_H_$(3))/$(CFG_LIBRUSTC_$(3)): CFG_COMPILER_TRIPLE = $(2)
$$(TLIB$(1)_T_$(2)_H_$(3))/$(CFG_LIBRUSTC_$(3)): \
$$(COMPILER_CRATE) $$(COMPILER_INPUTS) \
$$(TLIB$(1)_T_$(2)_H_$(3))/$(CFG_LIBSYNTAX_$(3)) \

1
mk/tests.mk
View File

@ -307,6 +307,7 @@ $(3)/stage$(1)/test/syntaxtest-$(2)$$(X_$(2)): \
@$$(call E, compile_and_link: $$@)
$$(STAGE$(1)_T_$(2)_H_$(3)) -o $$@ $$< --test
$(3)/stage$(1)/test/rustctest-$(2)$$(X_$(2)): CFG_COMPILER_TRIPLE = $(2)
$(3)/stage$(1)/test/rustctest-$(2)$$(X_$(2)): \
$$(COMPILER_CRATE) $$(COMPILER_INPUTS) \
$$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_RUSTLLVM_$(2)) \

24
src/librustc/driver/driver.rs
View File

@ -516,15 +516,15 @@ pub fn host_triple() -> ~str {
// idea of the host triple is the same as for the set of libraries we've
// actually built. We can't just take LLVM's host triple because they
// normalize all ix86 architectures to i386.
// FIXME (#2400): Instead of grabbing the host triple we really should
// be grabbing (at compile time) the target triple that this rustc is
// built with and calling that (at runtime) the host triple.
let ht = env!("CFG_BUILD_TRIPLE");
//
// Instead of grabbing the host triple (for the current host), we grab (at
// compile time) the target triple that this rustc is built with and
// calling that (at runtime) the host triple.
let ht = env!("CFG_COMPILER_TRIPLE");
return if ht != ~"" {
ht
} else {
fail!("rustc built without CFG_BUILD_TRIPLE")
fail!("rustc built without CFG_COMPILER_TRIPLE")
};
}
@ -534,15 +534,15 @@ pub fn host_triple() -> ~str {
// idea of the host triple is the same as for the set of libraries we've
// actually built. We can't just take LLVM's host triple because they
// normalize all ix86 architectures to i386.
// FIXME (#2400): Instead of grabbing the host triple we really should
// be grabbing (at compile time) the target triple that this rustc is
// built with and calling that (at runtime) the host triple.
let ht = env!("CFG_BUILD_TRIPLE");
//
// Instead of grabbing the host triple (for the current host), we grab (at
// compile time) the target triple that this rustc is built with and
// calling that (at runtime) the host triple.
let ht = env!("CFG_COMPILER_TRIPLE");
return if ht != "" {
ht.to_owned()
} else {
fail!("rustc built without CFG_BUILD_TRIPLE")
fail!("rustc built without CFG_COMPILER_TRIPLE")
};
}