kbuild: consolidate command line escaping

While the recent change to also escape # symbols when storing C-file
compilation command lines was helpful, it should be in effect for all
command lines, as much as the dollar escaping should be in effect for
C-source compilation commands. Additionally, for better readability and
maintenance, consolidating all the escaping (single quotes, dollars,
and now sharps) was also desirable.

Signed-Off-By: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

3 files changed, 12 insertions, 25 deletions

diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 92ce94b58b..3e7e0b278b 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -88,8 +88,7 @@ cc-ifversion = $(shell if [ $(call cc-version, $(CC)) $(1) $(2) ]; then \
 build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
 
 # If quiet is set, only print short version of command
-cmd = @$(if $($(quiet)cmd_$(1)),\
-      echo '  $(call escsq,$($(quiet)cmd_$(1)))' &&) $(cmd_$(1))
+cmd = @$(echo-cmd) $(cmd_$(1))
 
 # Add $(obj)/ for paths that is not absolute
 objectify = $(foreach o,$(1),$(if $(filter /%,$(o)),$(o),$(obj)/$(o)))
@@ -112,24 +111,24 @@ endif
 echo-cmd = $(if $($(quiet)cmd_$(1)), \
         echo '  $(call escsq,$($(quiet)cmd_$(1)))';)
 
+make-cmd = $(subst \#,\\\#,$(subst $$,$$$$,$(call escsq,$(cmd_$(1)))))
+
 # function to only execute the passed command if necessary
 # >'< substitution is for echo to work, >$< substitution to preserve $ when reloading .cmd file
 # note: when using inline perl scripts [perl -e '...$$t=1;...'] in $(cmd_xxx) double $$ your perl vars
 # 
 if_changed = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \
         @set -e; \
-        $(echo-cmd) \
-        $(cmd_$(1)); \
-        echo 'cmd_$@ := $(subst $$,$$$$,$(call escsq,$(cmd_$(1))))' > $(@D)/.$(@F).cmd)
+        $(echo-cmd) $(cmd_$(1)); \
+        echo 'cmd_$@ := $(make-cmd)' > $(@D)/.$(@F).cmd)
 
 # execute the command and also postprocess generated .d dependencies
 # file
 if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\
         $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ),                  \
         @set -e; \
-        $(echo-cmd) \
-        $(cmd_$(1)); \
-        scripts/basic/fixdep $(depfile) $@ '$(subst $$,$$$$,$(call escsq,$(cmd_$(1))))' > $(@D)/.$(@F).tmp; \
+        $(echo-cmd) $(cmd_$(1)); \
+        scripts/basic/fixdep $(depfile) $@ '$(make-cmd)' > $(@D)/.$(@F).tmp; \
         rm -f $(depfile); \
         mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd)
 
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 2737765f2f..6ac96ea92b 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -178,12 +178,10 @@ cmd_modversions =							\
 endif
 
 define rule_cc_o_c
-        $(if $($(quiet)cmd_checksrc),echo '  $($(quiet)cmd_checksrc)';)   \
-        $(cmd_checksrc)                                                   \
-        $(if $($(quiet)cmd_cc_o_c),echo '  $(call escsq,$($(quiet)cmd_cc_o_c))';)  \
-        $(cmd_cc_o_c);                                                    \
+        $(call echo-cmd,checksrc) $(cmd_checksrc)                         \
+        $(call echo-cmd,cc_o_c) $(cmd_cc_o_c);                            \
         $(cmd_modversions)                                                \
-        scripts/basic/fixdep $(depfile) $@ '$(call escsq,$(cmd_cc_o_c))' > $(@D)/.$(@F).tmp;  \
+        scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > $(@D)/.$(@F).tmp;  \
         rm -f $(depfile);                                                 \
         mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd
 endef
diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index 679124b11e..668a11a8b3 100644
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -132,20 +132,10 @@ void usage(void)
 
 /*
  * Print out the commandline prefixed with cmd_<target filename> :=
- * If commandline contains '#' escape with '\' so make to not see
- * the '#' as a start-of-comment symbol
- **/
+ */
 void print_cmdline(void)
 {
-        char *p = cmdline;
-
-        printf("cmd_%s := ", target);
-        for (; *p; p++) {
-                if (*p == '#')
-                        printf("\\");
-                printf("%c", *p);
-        }
-        printf("\n\n");
+        printf("cmd_%s := %s\n\n", target, cmdline);
 }
 
 char * str_config  = NULL;