aboutsummaryrefslogtreecommitdiffstats
path: root/scripts/Kconfig.include
blob: 87ff1dcc6bd5d8619f398e0670d79ad7063d4f35 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
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 $(CC))