2c3632d14f
Lots of code refactoring, simplification and cleanup. Lots of new unit-tests providing much higher code coverage. All courtesy of rillig at netbsd. Other significant changes: o new read-only variable .SHELL which provides the path of the shell used to run scripts (as defined by the .SHELL target). o variable parsing detects more errors. o new debug option -dl: LINT mode, does the equivalent of := for all variable assignments so that file and line number are reported for variable parse errors.
70 lines
2.0 KiB
Makefile
70 lines
2.0 KiB
Makefile
# $Id: whats.mk,v 1.10 2020/08/19 17:51:53 sjg Exp $
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#
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# @(#) Copyright (c) 2014-2020, Simon J. Gerraty
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#
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# This file is provided in the hope that it will
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# be of use. There is absolutely NO WARRANTY.
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# Permission to copy, redistribute or otherwise
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# use this file is hereby granted provided that
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# the above copyright notice and this notice are
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# left intact.
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#
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# Please send copies of changes and bug-fixes to:
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# sjg@crufty.net
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#
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.if ${MK_WHATSTRING:Uno} == "yes"
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# it can be useful to embed a what(1) string in binaries
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# so that the build location can be seen from a core file.
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.if defined(KMOD)
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what_thing ?= ${KMOD}
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.elif defined(LIB)
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what_thing ?= lib${LIB}
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.elif defined(PROG)
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what_thing ?= ${PROG}
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SRCS ?= ${PROG}.c
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.elif defined(SHLIB)
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what_thing ?= lib${SHLIB}
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.endif
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.if !empty(what_thing)
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# a unique name that won't conflict with anything
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what_uuid = what_${what_thing}_${.CURDIR:T:hash}
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what_var = what_${.CURDIR:T:hash}
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SRCS += ${what_uuid}.c
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CLEANFILES += ${what_uuid}.c
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# we do not need to capture this
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SUPPRESS_DEPEND += *${what_uuid}.c
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SB ?= ${SRCTOP:H}
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SB_LOCATION ?= ${HOST}:${SB}
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# make customization easy
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WHAT_LOCATION ?= ${.OBJDIR:S,${SB},${SB_LOCATION},}
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WHAT_1 ?= ${what_thing:tu} built ${%Y%m%d:L:localtime} by ${USER}
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WHAT_2 ?= ${what_location}
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WHAT_LINE_IDS ?= 1 2
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WHAT_NOCMP_LINE_IDS ?= 1
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# you can add other WHAT_* just be sure to set WHAT_LINE_IDS
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# and WHAT_NOCMP_LINE_IDS accordingly
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# this works with clang and gcc
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what_t = const char __attribute__ ((section(".data")))
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what_location := ${WHAT_LOCATION}
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# this script is done in multiple lines so we can
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# use the token ${.OODATE:MNO_META_CMP}
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# to prevent the variable parts making this constantly out-of-date
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${what_uuid}.c:
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echo 'extern const char ${WHAT_LINE_IDS:@i@${what_var}_$i[]@:ts,};' > $@
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.for i in ${WHAT_LINE_IDS}
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.if ${WHAT_NOCMP_LINE_IDS:M$i} != ""
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echo '${what_t} ${what_var}_$i[] = "@(#)${WHAT_$i}";' >> $@ ${.OODATE:MNO_META_CMP}
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.else
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echo '${what_t} ${what_var}_$i[] = "@(#)${WHAT_$i}";' >> $@
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.endif
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.endfor
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.endif
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.endif
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