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authorMasahiro Yamada <yamada.masahiro@socionext.com>2019-08-25 22:28:37 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2019-09-04 22:54:13 +0900
commit858805b336be1cabb3d9033adaa3676574d12e37 (patch)
tree3b276a719e3c841889b6924c18622bcaf87c9399 /Makefile
parent8cc7af751443f7c82d12c7e5061fd2fa2e08a3d4 (diff)
kbuild: add $(BASH) to run scripts with bash-extension
CONFIG_SHELL falls back to sh when bash is not installed on the system, but nobody is testing such a case since bash is usually installed. So, shell scripts invoked by CONFIG_SHELL are only tested with bash. It makes it difficult to test whether the hashbang #!/bin/sh is real. For example, #!/bin/sh in arch/powerpc/kernel/prom_init_check.sh is false. (I fixed it up) Besides, some shell scripts invoked by CONFIG_SHELL use bash-extension and #!/bin/bash is specified as the hashbang, while CONFIG_SHELL may not always be set to bash. Probably, the right thing to do is to introduce BASH, which is bash by default, and always set CONFIG_SHELL to sh. Replace $(CONFIG_SHELL) with $(BASH) for bash scripts. If somebody tries to add bash-extension to a #!/bin/sh script, it will be caught in testing because /bin/sh is a symlink to dash on some major distributions. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile11
1 files changed, 5 insertions, 6 deletions
diff --git a/Makefile b/Makefile
index db5706ceecad..06e1e21c0f45 100644
--- a/Makefile
+++ b/Makefile
@@ -404,9 +404,7 @@ KCONFIG_CONFIG ?= .config
export KCONFIG_CONFIG
# SHELL used by kbuild
-CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
- else if [ -x /bin/bash ]; then echo /bin/bash; \
- else echo sh; fi ; fi)
+CONFIG_SHELL := sh
HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null)
HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null)
@@ -443,6 +441,7 @@ PYTHON = python
PYTHON2 = python2
PYTHON3 = python3
CHECK = sparse
+BASH = bash
CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
-Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF)
@@ -488,7 +487,7 @@ KBUILD_LDFLAGS :=
GCC_PLUGINS_CFLAGS :=
CLANG_FLAGS :=
-export ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
+export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE PAHOLE LEX YACC AWK INSTALLKERNEL
export PERL PYTHON PYTHON2 PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE
@@ -1687,7 +1686,7 @@ clean: $(clean-dirs)
# Generate tags for editors
# ---------------------------------------------------------------------------
quiet_cmd_tags = GEN $@
- cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
+ cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@
tags TAGS cscope gtags: FORCE
$(call cmd,tags)
@@ -1708,7 +1707,7 @@ versioncheck:
| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
coccicheck:
- $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
+ $(Q)$(BASH) $(srctree)/scripts/$@
namespacecheck:
$(PERL) $(srctree)/scripts/namespace.pl

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