Merge tag 'kbuild-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:
 "Kbuild core:
   - remove unneeded $(call cc-option,...) switches
   - consolidate Clang compiler flags into CLANG_FLAGS
   - announce the deprecation of SUBDIRS
   - fix single target build for external module
   - simplify the dependencies of 'prepare' stage targets
   - allow fixdep to directly write to .*.cmd files
   - simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS
   - change if_changed_rule to accept multi-line recipe
   - move .SECONDARY special target to scripts/Kbuild.include
   - remove redundant 'set -e'
   - improve parallel execution for CONFIG_HEADERS_CHECK
   - misc cleanups

  Treewide fixes and cleanups
   - set Clang flags correctly for PowerPC boot images
   - fix UML build error with CONFIG_GCC_PLUGINS
   - remove unneeded patterns from .gitignore files
   - refactor firmware/Makefile
   - remove unneeded rules for *offsets.s
   - avoid unneeded regeneration of intermediate .s files
   - clean up ./Kbuild

  Modpost:
   - remove unused -M, -K options
   - fix false positive warnings about section mismatch
   - use simple devtable lookup instead of linker magic
   - misc cleanups

  Coccinelle:
   - relax boolinit.cocci checks for overall consistency
   - fix warning messages of boolinit.cocci

  Other tools:
   - improve -dirty check of scripts/setlocalversion
   - add a tool to generate compile_commands.json from .*.cmd files"

* tag 'kbuild-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (51 commits)
  kbuild: remove unused cmd_gentimeconst
  kbuild: remove $(obj)/ prefixes in ./Kbuild
  treewide: add intermediate .s files to targets
  treewide: remove explicit rules for *offsets.s
  firmware: refactor firmware/Makefile
  firmware: remove unnecessary patterns from .gitignore
  scripts: remove unnecessary ihex2fw and check-lc_ctypes from .gitignore
  um: remove unused filechk_gen_header in Makefile
  scripts: add a tool to produce a compile_commands.json file
  kbuild: add -Werror=implicit-int flag unconditionally
  kbuild: add -Werror=strict-prototypes flag unconditionally
  kbuild: add -fno-PIE flag unconditionally
  scripts: coccinelle: Correct warning message
  scripts: coccinelle: only suggest true/false in files that already use them
  kbuild: handle part-of-module correctly for *.ll and *.symtypes
  kbuild: refactor part-of-module
  kbuild: refactor quiet_modtag
  kbuild: remove redundant quiet_modtag for $(obj-m)
  kbuild: refactor Makefile.asm-generic
  user/Makefile: Fix typo and capitalization in comment section
  ...

1 files changed, 27 insertions, 16 deletions

diff --git a/scripts/coccinelle/misc/boolinit.cocci b/scripts/coccinelle/misc/boolinit.cocci
index b9abed49cd95..b0584a33c921 100644
--- a/scripts/coccinelle/misc/boolinit.cocci
+++ b/scripts/coccinelle/misc/boolinit.cocci
@@ -13,10 +13,17 @@ virtual context
 virtual org
 virtual report
 
+@boolok@
+symbol true,false;
+@@
+(
+true
+|
+false
+)
+
 @depends on patch@
 bool t;
-symbol true;
-symbol false;
 @@
 
 (
@@ -63,7 +70,7 @@ bool t;
 + t
 )
 
-@depends on patch@
+@depends on patch && boolok@
 bool b;
 @@
 (
@@ -116,19 +123,23 @@ position p;
 * t@p != 0
 )
 
-@r3 depends on !patch@
+@r3 depends on !patch && boolok@
 bool b;
-position p1,p2;
-constant c;
+position p1;
 @@
 (
 *b@p1 = 0
 |
 *b@p1 = 1
-|
-*b@p2 = c
 )
 
+@r4 depends on !patch@
+bool b;
+position p2;
+constant c != {0,1};
+@@
+*b@p2 = c
+
 @script:python depends on org@
 p << r1.p;
 @@
@@ -139,19 +150,19 @@ cocci.print_main("WARNING: Comparison to bool",p)
 p << r2.p;
 @@
 
-cocci.print_main("WARNING: Comparison of bool to 0/1",p)
+cocci.print_main("WARNING: Comparison of 0/1 to bool variable",p)
 
 @script:python depends on org@
 p1 << r3.p1;
 @@
 
-cocci.print_main("WARNING: Assignment of bool to 0/1",p1)
+cocci.print_main("WARNING: Assignment of 0/1 to bool variable",p1)
 
 @script:python depends on org@
-p2 << r3.p2;
+p2 << r4.p2;
 @@
 
-cocci.print_main("ERROR: Assignment of bool to non-0/1 constant",p2)
+cocci.print_main("ERROR: Assignment of non-0/1 constant to bool variable",p2)
 
 @script:python depends on report@
 p << r1.p;
@@ -163,16 +174,16 @@ coccilib.report.print_report(p[0],"WARNING: Comparison to bool")
 p << r2.p;
 @@
 
-coccilib.report.print_report(p[0],"WARNING: Comparison of bool to 0/1")
+coccilib.report.print_report(p[0],"WARNING: Comparison of 0/1 to bool variable")
 
 @script:python depends on report@
 p1 << r3.p1;
 @@
 
-coccilib.report.print_report(p1[0],"WARNING: Assignment of bool to 0/1")
+coccilib.report.print_report(p1[0],"WARNING: Assignment of 0/1 to bool variable")
 
 @script:python depends on report@
-p2 << r3.p2;
+p2 << r4.p2;
 @@
 
-coccilib.report.print_report(p2[0],"ERROR: Assignment of bool to non-0/1 constant")
+coccilib.report.print_report(p2[0],"ERROR: Assignment of non-0/1 constant to bool variable")