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| author | Masahiro Yamada <masahiroy@kernel.org> | 2021-12-14 11:53:53 +0900 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2022-01-08 18:03:57 +0900 |
| commit | 129ab0d2d9f38b9d43df35235fc66c6740d6928b (patch) | |
| tree | b58b9e8b648c4b7c2ea3d2eaf6118ad272b89797 /Makefile | |
| parent | 7d153696e5db1e37387c2f7ec06ffc8d4aac70a4 (diff) | |
| download | lwn-129ab0d2d9f38b9d43df35235fc66c6740d6928b.tar.gz lwn-129ab0d2d9f38b9d43df35235fc66c6740d6928b.zip | |
kbuild: do not quote string values in include/config/auto.conf
The previous commit fixed up all shell scripts to not include
include/config/auto.conf.
Now that include/config/auto.conf is only included by Makefiles,
we can change it into a more Make-friendly form.
Previously, Kconfig output string values enclosed with double-quotes
(both in the .config and include/config/auto.conf):
CONFIG_X="foo bar"
Unlike shell, Make handles double-quotes (and single-quotes as well)
verbatim. We must rip them off when used.
There are some patterns:
[1] $(patsubst "%",%,$(CONFIG_X))
[2] $(CONFIG_X:"%"=%)
[3] $(subst ",,$(CONFIG_X))
[4] $(shell echo $(CONFIG_X))
These are not only ugly, but also fragile.
[1] and [2] do not work if the value contains spaces, like
CONFIG_X=" foo bar "
[3] does not work correctly if the value contains double-quotes like
CONFIG_X="foo\"bar"
[4] seems to work better, but has a cost of forking a process.
Anyway, quoted strings were always PITA for our Makefiles.
This commit changes Kconfig to stop quoting in include/config/auto.conf.
These are the string type symbols referenced in Makefiles or scripts:
ACPI_CUSTOM_DSDT_FILE
ARC_BUILTIN_DTB_NAME
ARC_TUNE_MCPU
BUILTIN_DTB_SOURCE
CC_IMPLICIT_FALLTHROUGH
CC_VERSION_TEXT
CFG80211_EXTRA_REGDB_KEYDIR
EXTRA_FIRMWARE
EXTRA_FIRMWARE_DIR
EXTRA_TARGETS
H8300_BUILTIN_DTB
INITRAMFS_SOURCE
LOCALVERSION
MODULE_SIG_HASH
MODULE_SIG_KEY
NDS32_BUILTIN_DTB
NIOS2_DTB_SOURCE
OPENRISC_BUILTIN_DTB
SOC_CANAAN_K210_DTB_SOURCE
SYSTEM_BLACKLIST_HASH_LIST
SYSTEM_REVOCATION_KEYS
SYSTEM_TRUSTED_KEYS
TARGET_CPU
UNUSED_KSYMS_WHITELIST
XILINX_MICROBLAZE0_FAMILY
XILINX_MICROBLAZE0_HW_VER
XTENSA_VARIANT_NAME
I checked them one by one, and fixed up the code where necessary.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -1720,9 +1720,9 @@ PHONY += prepare # now expand this into a simple variable to reduce the cost of shell evaluations prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT) prepare: - @if [ "$(CC_VERSION_TEXT)" != $(CONFIG_CC_VERSION_TEXT) ]; then \ + @if [ "$(CC_VERSION_TEXT)" != "$(CONFIG_CC_VERSION_TEXT)" ]; then \ echo >&2 "warning: the compiler differs from the one used to build the kernel"; \ - echo >&2 " The kernel was built by: "$(CONFIG_CC_VERSION_TEXT); \ + echo >&2 " The kernel was built by: $(CONFIG_CC_VERSION_TEXT)"; \ echo >&2 " You are using: $(CC_VERSION_TEXT)"; \ fi |