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authorTom Rini <trini@konsulko.com>2020-05-14 08:30:01 -0400
committerTom Rini <trini@konsulko.com>2020-07-01 10:11:03 -0400
commita9610bd8e44853184a1b8a4c57f8355ee0bf7347 (patch)
treeed1c05a20d2dd8ad3a35d970ee1bde786a07deb8 /scripts
parentddf34e7d3c9616954fa8bae5fe3ab2646fb4958f (diff)
kconfig: Add scripts/Kconfig.include from v4.19
As part of re-syncing our Kconfig logic up to v4.19, we had missed adding this new file that includes helper macros. To quote the upstream commit e1cfdc0e72fc ("kconfig: add basic helper macros to scripts/Kconfig.include"): Kconfig got text processing tools like we see in Make. Add Kconfig helper macros to scripts/Kconfig.include like we collect Makefile macros in scripts/Kbuild.include. Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/Kconfig.include30
1 files changed, 30 insertions, 0 deletions
diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
new file mode 100644
index 0000000000..dad5583451
--- /dev/null
+++ b/scripts/Kconfig.include
@@ -0,0 +1,30 @@
+# Kconfig helper macros
+
+# Convenient variables
+comma := ,
+quote := "
+squote := '
+empty :=
+space := $(empty) $(empty)
+dollar := $
+right_paren := )
+left_paren := (
+
+# $(if-success,<command>,<then>,<else>)
+# Return <then> if <command> exits with 0, <else> otherwise.
+if-success = $(shell,{ $(1); } >/dev/null 2>&1 && echo "$(2)" || echo "$(3)")
+
+# $(success,<command>)
+# Return y if <command> exits with 0, n otherwise
+success = $(if-success,$(1),y,n)
+
+# $(cc-option,<flag>)
+# Return y if the compiler supports <flag>, n otherwise
+cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null)
+
+# $(ld-option,<flag>)
+# Return y if the linker supports <flag>, n otherwise
+ld-option = $(success,$(LD) -v $(1))
+
+# gcc version including patch level
+gcc-version := $(shell,$(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//')