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infra: fix BUILDTAG for out-of-tree builds

This commit is contained in:
Thomas Schoebel-Theuer 2014-08-07 15:25:04 +02:00
parent 646dbfeed8
commit a81e255ed3
1 changed files with 16 additions and 6 deletions
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22
kernel/Kbuild
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@ -73,10 +73,13 @@ mars-objs += \
endif
#
# buildtag.h should be regenerated in every build. If a file
# 'DISTVERSION' exists (out-of-tree tarball), its content is
# used as the BUILDTAG. Otherwise, if git is available, the
# git HEAD revision is used instead.
# buildtag.h should be regenerated in every build.
#
# The version is determined by the following preference order:
# 1) environment variable $MARSVERSION
# 2) when git is available: git describe --tags
# 3) if a file 'DISTVERSION' exists (out-of-tree tarball), use its content.
# 4) otherwise "no-buildtag-available"
#
extra-y += buildtag.h
$(obj)/buildtag.h: $(patsubst $(obj)/buildtag.h,,$(wildcard $(obj)/*.[ch])) $(obj)/*/*.[ch]
@ -85,16 +88,19 @@ $(obj)/buildtag.h: $(patsubst $(obj)/buildtag.h,,$(wildcard $(obj)/*.[ch])) $(ob
exec > $@;\
/bin/echo -e "/* Automatically generated -- DO NOT EDIT! */";\
cd $(src); \
if [ -e DISTVERSION ]; then \
BUILDTAG=$$(cat DISTVERSION); \
if [ "$$MARSVERSION" != "" ]; then \
BUILDTAG="$$MARSVERSION"; \
elif git describe --tags >/dev/null 2>&1; then \
BUILDTAG="$$(git describe --tags)"; \
elif [ -e DISTVERSION ]; then \
BUILDTAG=$$(cat DISTVERSION); \
else \
BUILDTAG="no-buildtag-available"; \
fi; \
/bin/echo -e "#define BUILDTAG \"$$BUILDTAG\"";\
/bin/echo -e "#define BUILDHOST \"$$USER@`hostname`\"";\
/bin/echo -e "#define BUILDDATE \"$$(date '+%F %T')\""
cat $@;
ifndef CONFIG_MARS
# mars_config.h is generated by a simple Kconfig parser (gen_config.pl)
@ -105,7 +111,10 @@ ifndef CONFIG_MARS
#
extra-y += mars_config.h
GEN_CONFIG_SCRIPT := $(src)/../scripts/gen_config.pl
$(obj)/mars_config.h: $(obj)/buildtag.h
$(obj)/mars_config.h: $(src)/Kconfig $(GEN_CONFIG_SCRIPT)
$(Q)$(kecho) "MARS: using compiler $($(CC) --version | head -1)"
$(CC) -v
$(Q)$(kecho) "MARS: Generating $@"
$(Q)set -e; \
if [ ! -x $(GEN_CONFIG_SCRIPT) ]; then \
@ -113,4 +122,5 @@ $(obj)/mars_config.h: $(src)/Kconfig $(GEN_CONFIG_SCRIPT)
/bin/false; \
fi; \
cat $< | $(GEN_CONFIG_SCRIPT) > $@;
cat $@;
endif