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-rw-r--r--Kconfig2
-rw-r--r--scripts/Kconfig.include30
2 files changed, 32 insertions, 0 deletions
diff --git a/Kconfig b/Kconfig
index 6d45534cf1..97707e65a2 100644
--- a/Kconfig
+++ b/Kconfig
@@ -5,6 +5,8 @@
#
mainmenu "U-Boot $(UBOOTVERSION) Configuration"
+source "scripts/Kconfig.include"
+
# Allow defaults in arch-specific code to override any given here
source "arch/Kconfig"
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*//')