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| author | Dmitry Torokhov <[email protected]> | 2021-09-05 18:58:05 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <[email protected]> | 2021-09-05 18:58:05 -0700 |
| commit | 8be98d2f2a0a262f8bf8a0bc1fdf522b3c7aab17 (patch) | |
| tree | a226b265d692d1933c0541802527d8aeb0d469ab /tools/build/Build.include | |
| parent | 818b26588994d9d95743fca0a427f08ec6c1c41d (diff) | |
| parent | 3e204d6b76b29274cc8e57f8bd8d9873f04a7f48 (diff) | |
Merge branch 'next' into for-linus
Prepare input updates for 5.15 merge window.
Diffstat (limited to 'tools/build/Build.include')
| -rw-r--r-- | tools/build/Build.include | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/tools/build/Build.include b/tools/build/Build.include index 585486e40995..2cf3b1bde86e 100644 --- a/tools/build/Build.include +++ b/tools/build/Build.include @@ -100,3 +100,27 @@ cxx_flags = -Wp,-MD,$(depfile) -Wp,-MT,$@ $(CXXFLAGS) -D"BUILD_STR(s)=\#s" $(CXX ## HOSTCC C flags host_c_flags = -Wp,-MD,$(depfile) -Wp,-MT,$@ $(KBUILD_HOSTCFLAGS) -D"BUILD_STR(s)=\#s" $(HOSTCFLAGS_$(basetarget).o) $(HOSTCFLAGS_$(obj)) + +# output directory for tests below +TMPOUT = .tmp_$$$$ + +# try-run +# Usage: option = $(call try-run, $(CC)...-o "$$TMP",option-ok,otherwise) +# Exit code chooses option. "$$TMP" serves as a temporary file and is +# automatically cleaned up. +try-run = $(shell set -e; \ + TMP=$(TMPOUT)/tmp; \ + mkdir -p $(TMPOUT); \ + trap "rm -rf $(TMPOUT)" EXIT; \ + if ($(1)) >/dev/null 2>&1; \ + then echo "$(2)"; \ + else echo "$(3)"; \ + fi) + +# cc-option +# Usage: cflags-y += $(call cc-option,-march=winchip-c6,-march=i586) +cc-option = $(call try-run, \ + $(CC) -Werror $(1) -c -x c /dev/null -o "$$TMP",$(1),$(2)) + +# delete partially updated (i.e. corrupted) files on error +.DELETE_ON_ERROR: |