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-rw-r--r--scripts/Makefile.compiler14
1 files changed, 7 insertions, 7 deletions
diff --git a/scripts/Makefile.compiler b/scripts/Makefile.compiler
index 057305eae85c..e0842496d26e 100644
--- a/scripts/Makefile.compiler
+++ b/scripts/Makefile.compiler
@@ -53,13 +53,11 @@ cc-option = $(call __cc-option, $(CC),\
# cc-option-yn
# Usage: flag := $(call cc-option-yn,-march=winchip-c6)
-cc-option-yn = $(call try-run,\
- $(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",y,n)
+cc-option-yn = $(if $(call cc-option,$1),y,n)
# cc-disable-warning
# Usage: cflags-y += $(call cc-disable-warning,unused-but-set-variable)
-cc-disable-warning = $(call try-run,\
- $(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1)))
+cc-disable-warning = $(if $(call cc-option,-W$(strip $1)),-Wno-$(strip $1))
# gcc-min-version
# Usage: cflags-$(call gcc-min-version, 70100) += -foo
@@ -75,8 +73,11 @@ ld-option = $(call try-run, $(LD) $(KBUILD_LDFLAGS) $(1) -v,$(1),$(2),$(3))
# __rustc-option
# Usage: MY_RUSTFLAGS += $(call __rustc-option,$(RUSTC),$(MY_RUSTFLAGS),-Cinstrument-coverage,-Zinstrument-coverage)
+# TODO: remove RUSTC_BOOTSTRAP=1 when we raise the minimum GNU Make version to 4.4
__rustc-option = $(call try-run,\
- $(1) $(2) $(3) --crate-type=rlib /dev/null --out-dir=$$TMPOUT -o "$$TMP",$(3),$(4))
+ echo '#![allow(missing_docs)]#![feature(no_core)]#![no_core]' | RUSTC_BOOTSTRAP=1\
+ $(1) --sysroot=/dev/null $(filter-out --sysroot=/dev/null,$(2)) $(3)\
+ --crate-type=rlib --out-dir=$(TMPOUT) --emit=obj=- - >/dev/null,$(3),$(4))
# rustc-option
# Usage: rustflags-y += $(call rustc-option,-Cinstrument-coverage,-Zinstrument-coverage)
@@ -85,5 +86,4 @@ rustc-option = $(call __rustc-option, $(RUSTC),\
# rustc-option-yn
# Usage: flag := $(call rustc-option-yn,-Cinstrument-coverage)
-rustc-option-yn = $(call try-run,\
- $(RUSTC) $(KBUILD_RUSTFLAGS) $(1) --crate-type=rlib /dev/null --out-dir=$$TMPOUT -o "$$TMP",y,n)
+rustc-option-yn = $(if $(call rustc-option,$1),y,n)