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Subject[PATCH] kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables
Date
Redefine GZIP, BZIP2, LZOP variables as KGZIP, KBZIP2, KLZOP resp.
GZIP, BZIP2, LZOP env variables are reserved by the tools. The original
attempt to redefine them internally doesn't work in makefiles/scripts
intercall scenarios, e.g., "make GZIP=gzip bindeb-pkg" and results in
broken builds. There can be other broken build commands because of this,
so the universal solution is to use non-reserved env variables for the
compression tools.

Fixes: 8dfb61dcbace ("kbuild: add variables for compression tools")
Signed-off-by: Denis Efremov <efremov@linux.com>
---
Makefile | 24 +++++-------------------
arch/arm/boot/deflate_xip_data.sh | 2 +-
arch/ia64/Makefile | 2 +-
arch/m68k/Makefile | 8 ++++----
arch/parisc/Makefile | 2 +-
scripts/Makefile.lib | 6 +++---
scripts/Makefile.package | 6 +++---
scripts/package/buildtar | 4 ++--
8 files changed, 20 insertions(+), 34 deletions(-)

diff --git a/Makefile b/Makefile
index 839f9fee22cb..e43d193bb3b2 100644
--- a/Makefile
+++ b/Makefile
@@ -458,27 +458,13 @@ PYTHON = python
PYTHON3 = python3
CHECK = sparse
BASH = bash
-GZIP = gzip
-BZIP2 = bzip2
-LZOP = lzop
+KGZIP = gzip
+KBZIP2 = bzip2
+KLZOP = lzop
LZMA = lzma
LZ4 = lz4c
XZ = xz

-# GZIP, BZIP2, LZOP env vars are used by the tools. Support them as the command
-# line interface, but use _GZIP, _BZIP2, _LZOP internally.
-_GZIP := $(GZIP)
-_BZIP2 := $(BZIP2)
-_LZOP := $(LZOP)
-
-# Reset GZIP, BZIP2, LZOP in this Makefile
-override GZIP=
-override BZIP2=
-override LZOP=
-
-# Reset GZIP, BZIP2, LZOP in recursive invocations
-MAKEOVERRIDES += GZIP= BZIP2= LZOP=
-
CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
-Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF)
NOSTDINC_FLAGS :=
@@ -526,7 +512,7 @@ CLANG_FLAGS :=
export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC
export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF PAHOLE LEX YACC AWK INSTALLKERNEL
export PERL PYTHON PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
-export _GZIP _BZIP2 _LZOP LZMA LZ4 XZ
+export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ
export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE

export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS
@@ -1047,7 +1033,7 @@ export mod_strip_cmd
mod_compress_cmd = true
ifdef CONFIG_MODULE_COMPRESS
ifdef CONFIG_MODULE_COMPRESS_GZIP
- mod_compress_cmd = $(_GZIP) -n -f
+ mod_compress_cmd = $(KGZIP) -n -f
endif # CONFIG_MODULE_COMPRESS_GZIP
ifdef CONFIG_MODULE_COMPRESS_XZ
mod_compress_cmd = $(XZ) -f
diff --git a/arch/arm/boot/deflate_xip_data.sh b/arch/arm/boot/deflate_xip_data.sh
index 739f0464321e..304495c3c2c5 100755
--- a/arch/arm/boot/deflate_xip_data.sh
+++ b/arch/arm/boot/deflate_xip_data.sh
@@ -56,7 +56,7 @@ trap 'rm -f "$XIPIMAGE.tmp"; exit 1' 1 2 3
# substitute the data section by a compressed version
$DD if="$XIPIMAGE" count=$data_start iflag=count_bytes of="$XIPIMAGE.tmp"
$DD if="$XIPIMAGE" skip=$data_start iflag=skip_bytes |
-$_GZIP -9 >> "$XIPIMAGE.tmp"
+$KGZIP -9 >> "$XIPIMAGE.tmp"

# replace kernel binary
mv -f "$XIPIMAGE.tmp" "$XIPIMAGE"
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index f817f3d5e758..2876a7df1b0a 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -40,7 +40,7 @@ $(error Sorry, you need a newer version of the assember, one that is built from
endif

quiet_cmd_gzip = GZIP $@
-cmd_gzip = cat $(real-prereqs) | $(_GZIP) -n -f -9 > $@
+cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@

quiet_cmd_objcopy = OBJCOPY $@
cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile
index ce6db5e5a5a3..0415d28dbe4f 100644
--- a/arch/m68k/Makefile
+++ b/arch/m68k/Makefile
@@ -135,10 +135,10 @@ vmlinux.gz: vmlinux
ifndef CONFIG_KGDB
cp vmlinux vmlinux.tmp
$(STRIP) vmlinux.tmp
- $(_GZIP) -9c vmlinux.tmp >vmlinux.gz
+ $(KGZIP) -9c vmlinux.tmp >vmlinux.gz
rm vmlinux.tmp
else
- $(_GZIP) -9c vmlinux >vmlinux.gz
+ $(KGZIP) -9c vmlinux >vmlinux.gz
endif

bzImage: vmlinux.bz2
@@ -148,10 +148,10 @@ vmlinux.bz2: vmlinux
ifndef CONFIG_KGDB
cp vmlinux vmlinux.tmp
$(STRIP) vmlinux.tmp
- $(_BZIP2) -1c vmlinux.tmp >vmlinux.bz2
+ $(KBZIP2) -1c vmlinux.tmp >vmlinux.bz2
rm vmlinux.tmp
else
- $(_BZIP2) -1c vmlinux >vmlinux.bz2
+ $(KBZIP2) -1c vmlinux >vmlinux.bz2
endif

archclean:
diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
index 182a5bca3e2c..5140c602207f 100644
--- a/arch/parisc/Makefile
+++ b/arch/parisc/Makefile
@@ -162,7 +162,7 @@ vmlinuz: bzImage
$(OBJCOPY) $(boot)/bzImage $@
else
vmlinuz: vmlinux
- @$(_GZIP) -cf -9 $< > $@
+ @$(KGZIP) -cf -9 $< > $@
endif

install:
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 127f2a7e3ced..94eeddb2e599 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -244,7 +244,7 @@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
# ---------------------------------------------------------------------------

quiet_cmd_gzip = GZIP $@
- cmd_gzip = cat $(real-prereqs) | $(_GZIP) -n -f -9 > $@
+ cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@

# DTC
# ---------------------------------------------------------------------------
@@ -337,7 +337,7 @@ printf "%08x\n" $$dec_size | \
)

quiet_cmd_bzip2 = BZIP2 $@
- cmd_bzip2 = { cat $(real-prereqs) | $(_BZIP2) -9; $(size_append); } > $@
+ cmd_bzip2 = { cat $(real-prereqs) | $(KBZIP2) -9; $(size_append); } > $@

# Lzma
# ---------------------------------------------------------------------------
@@ -346,7 +346,7 @@ quiet_cmd_lzma = LZMA $@
cmd_lzma = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@

quiet_cmd_lzo = LZO $@
- cmd_lzo = { cat $(real-prereqs) | $(_LZOP) -9; $(size_append); } > $@
+ cmd_lzo = { cat $(real-prereqs) | $(KLZOP) -9; $(size_append); } > $@

quiet_cmd_lz4 = LZ4 $@
cmd_lz4 = { cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout; \
diff --git a/scripts/Makefile.package b/scripts/Makefile.package
index b2b6153af63a..f952fb64789d 100644
--- a/scripts/Makefile.package
+++ b/scripts/Makefile.package
@@ -45,7 +45,7 @@ if test "$(objtree)" != "$(srctree)"; then \
false; \
fi ; \
$(srctree)/scripts/setlocalversion --save-scmversion; \
-tar -I $(_GZIP) -c $(RCS_TAR_IGNORE) -f $(2).tar.gz \
+tar -I $(KGZIP) -c $(RCS_TAR_IGNORE) -f $(2).tar.gz \
--transform 's:^:$(2)/:S' $(TAR_CONTENT) $(3); \
rm -f $(objtree)/.scmversion

@@ -127,8 +127,8 @@ util/PERF-VERSION-GEN $(CURDIR)/$(perf-tar)/); \
tar rf $(perf-tar).tar $(perf-tar)/HEAD $(perf-tar)/PERF-VERSION-FILE; \
rm -r $(perf-tar); \
$(if $(findstring tar-src,$@),, \
-$(if $(findstring bz2,$@),$(_BZIP2), \
-$(if $(findstring gz,$@),$(_GZIP), \
+$(if $(findstring bz2,$@),$(KBZIP2), \
+$(if $(findstring gz,$@),$(KGZIP), \
$(if $(findstring xz,$@),$(XZ), \
$(error unknown target $@)))) \
-f -9 $(perf-tar).tar)
diff --git a/scripts/package/buildtar b/scripts/package/buildtar
index ad62c6879622..fb1578e72ab9 100755
--- a/scripts/package/buildtar
+++ b/scripts/package/buildtar
@@ -28,11 +28,11 @@ case "${1}" in
opts=
;;
targz-pkg)
- opts="-I ${_GZIP}"
+ opts="-I ${KGZIP}"
tarball=${tarball}.gz
;;
tarbz2-pkg)
- opts="-I ${_BZIP2}"
+ opts="-I ${KBZIP2}"
tarball=${tarball}.bz2
;;
tarxz-pkg)
--
2.26.2
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