kconfig: check for pkg-config on make {menu,n,g,x}config

Each of 'make {menu,n,g,x}config' uses (needs) pkg-config to make sure
that other required files are present and to determine build flags
settings, but none of these check that pkg-config itself is present.
Add a check for all 4 of these targets and update
Documentation/process/changes.rst to mention 'pkg-config'.

Fixes kernel bugzilla #77511:
https://bugzilla.kernel.org/show_bug.cgi?id=77511

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Bjørn Forsman <bjorn.forsman@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Randy Dunlap 2018-06-28 16:39:50 -07:00 committed by Masahiro Yamada
parent 9d3cce1e8b
commit 4ab3b80159
3 changed files with 17 additions and 0 deletions

View File

@ -81,6 +81,14 @@ The build system has, as of 4.13, switched to using thin archives (`ar T`)
rather than incremental linking (`ld -r`) for built-in.a intermediate steps.
This requires binutils 2.20 or newer.
pkg-config
----------
The build system, as of 4.18, requires pkg-config to check for installed
kconfig tools and to determine flags settings for use in
'make {menu,n,g,x}config'. Previously pkg-config was being used but not
verified or documented.
Flex
----

View File

@ -215,6 +215,7 @@ $(obj)/zconf.tab.o: $(obj)/zconf.lex.c
# check if necessary packages are available, and configure build flags
define filechk_conf_cfg
$(CONFIG_SHELL) $(srctree)/scripts/kconfig/check-pkgconfig.sh; \
$(CONFIG_SHELL) $<
endef

View File

@ -0,0 +1,8 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# Check for pkg-config presence
if [ -z $(command -v pkg-config) ]; then
echo "'make *config' requires 'pkg-config'. Please install it." 1>&2
exit 1
fi