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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /Kbuild
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'Kbuild')
-rw-r--r--Kbuild101
1 files changed, 101 insertions, 0 deletions
diff --git a/Kbuild b/Kbuild
new file mode 100644
index 00000000000..b8b708ad6dc
--- /dev/null
+++ b/Kbuild
@@ -0,0 +1,101 @@
+#
+# Kbuild for top-level directory of the kernel
+# This file takes care of the following:
+# 1) Generate bounds.h
+# 2) Generate asm-offsets.h (may need bounds.h)
+# 3) Check for missing system calls
+
+#####
+# 1) Generate bounds.h
+
+bounds-file := include/generated/bounds.h
+
+always := $(bounds-file)
+targets := $(bounds-file) kernel/bounds.s
+
+quiet_cmd_bounds = GEN $@
+define cmd_bounds
+ (set -e; \
+ echo "#ifndef __LINUX_BOUNDS_H__"; \
+ echo "#define __LINUX_BOUNDS_H__"; \
+ echo "/*"; \
+ echo " * DO NOT MODIFY."; \
+ echo " *"; \
+ echo " * This file was generated by Kbuild"; \
+ echo " *"; \
+ echo " */"; \
+ echo ""; \
+ sed -ne $(sed-y) $<; \
+ echo ""; \
+ echo "#endif" ) > $@
+endef
+
+# We use internal kbuild rules to avoid the "is up to date" message from make
+kernel/bounds.s: kernel/bounds.c FORCE
+ $(Q)mkdir -p $(dir $@)
+ $(call if_changed_dep,cc_s_c)
+
+$(obj)/$(bounds-file): kernel/bounds.s Kbuild
+ $(Q)mkdir -p $(dir $@)
+ $(call cmd,bounds)
+
+#####
+# 2) Generate asm-offsets.h
+#
+
+offsets-file := include/generated/asm-offsets.h
+
+always += $(offsets-file)
+targets += $(offsets-file)
+targets += arch/$(SRCARCH)/kernel/asm-offsets.s
+
+
+# Default sed regexp - multiline due to syntax constraints
+define sed-y
+ "/^->/{s:->#\(.*\):/* \1 */:; \
+ s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
+ s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
+ s:->::; p;}"
+endef
+
+quiet_cmd_offsets = GEN $@
+define cmd_offsets
+ (set -e; \
+ echo "#ifndef __ASM_OFFSETS_H__"; \
+ echo "#define __ASM_OFFSETS_H__"; \
+ echo "/*"; \
+ echo " * DO NOT MODIFY."; \
+ echo " *"; \
+ echo " * This file was generated by Kbuild"; \
+ echo " *"; \
+ echo " */"; \
+ echo ""; \
+ sed -ne $(sed-y) $<; \
+ echo ""; \
+ echo "#endif" ) > $@
+endef
+
+# We use internal kbuild rules to avoid the "is up to date" message from make
+arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \
+ $(obj)/$(bounds-file) FORCE
+ $(Q)mkdir -p $(dir $@)
+ $(call if_changed_dep,cc_s_c)
+
+$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild
+ $(call cmd,offsets)
+
+#####
+# 3) Check for missing system calls
+#
+
+always += missing-syscalls
+targets += missing-syscalls
+
+quiet_cmd_syscalls = CALL $<
+ cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)
+
+missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE
+ $(call cmd,syscalls)
+
+# Keep these two files during make clean
+no-clean-files := $(bounds-file) $(offsets-file)