linux-kernel - [PATCH 1/5] scripts/gdb: delay generation of gdb constants.py

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Message-Id: <1550568787-18710-1-git-send-email-yamada.masahiro@socionext.com>
Date:   Tue, 19 Feb 2019 18:33:02 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-kbuild@...r.kernel.org
Cc:     Kieran Bingham <kbingham@...nel.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/5] scripts/gdb: delay generation of gdb constants.py

scripts/gdb/linux/constants.py is never used in the kernel build
process. There is no good reason to create it so early.

Get it out of the 'prepare' stage.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

 Kbuild   | 10 ----------
 Makefile | 11 +++++++++++
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/Kbuild b/Kbuild
index 65db5be..4cebcc7 100644
--- a/Kbuild
+++ b/Kbuild
@@ -6,7 +6,6 @@
 # 2) Generate timeconst.h
 # 3) Generate asm-offsets.h (may need bounds.h and timeconst.h)
 # 4) Check for missing system calls
-# 5) Generate constants.py (may need bounds.h)
 
 #####
 # 1) Generate bounds.h
@@ -58,14 +57,5 @@ quiet_cmd_syscalls = CALL    $<
 missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE
 	$(call cmd,syscalls)
 
-#####
-# 5) Generate constants for Python GDB integration
-#
-
-extra-$(CONFIG_GDB_SCRIPTS) += build_constants_py
-
-build_constants_py: $(timeconst-file) $(bounds-file)
-	@$(MAKE) $(build)=scripts/gdb/linux $@
-
 # Keep these three files during make clean
 no-clean-files := $(bounds-file) $(offsets-file) $(timeconst-file)
diff --git a/Makefile b/Makefile
index 88db36b..26dbcb7 100644
--- a/Makefile
+++ b/Makefile
@@ -1513,6 +1513,17 @@ PHONY += $(DOC_TARGETS)
 $(DOC_TARGETS): scripts_basic FORCE
 	$(Q)$(MAKE) $(build)=Documentation $@
 
+# Misc
+# ---------------------------------------------------------------------------
+
+PHONY += scripts_gdb
+scripts_gdb: prepare
+	$(Q)$(MAKE) $(build)=scripts/gdb/linux build_constants_py
+
+ifdef CONFIG_GDB_SCRIPTS
+all: scripts_gdb
+endif
+
 else # KBUILD_EXTMOD
 
 ###
-- 
2.7.4