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Added comments in calc Makefiles

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Added a bunch of information to the near bottom of HOWTO.INSTALL
    on calc Makefiles.  This information discusses the various
    Makefiles found in the calc source.

    Added comments in various calc Makefiles about their origin.
    In particular, for Makefiles that are constructed such as
    Makefile.simple, custom/Makefile and custom/Makefile.simple
    there are comments about how they were made.

    For all calc Makefiles, including those in sub-directories,
    near the top there is now a line of the form:

	# SRC: ... some message about the origin ...
This commit is contained in:
Landon Curt Noll
2021-03-26 16:52:32 -07:00
parent f480c8c5df
commit 09d7080547
10 changed files with 427 additions and 81 deletions
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24
custom/Makefile.tail
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@@ -1,3 +1,18 @@
#
# Copyright (C) 1999-2006,2014,2017-2018,2021 Landon Curt Noll
#
# SRC: custom/Makefile.tail
#
# The "# SRC: ... - ..." comment line above indicates
# the origin of this file.
#
# IMPORTANT: Please see the section on Makefiles near the
# bottom of the HOWTO.INSTALL file.
####################################################
# NOTE: Start of section from custom/Makefile.tail #
####################################################
##############################################################################
#-=-=-=-=-=-=-=-=- Be careful if you change something below -=-=-=-=-=-=-=-=-#
##############################################################################
@@ -148,7 +163,10 @@ Makefile.simple: ${MAKE_FILE}
${V} echo '=-=-=-=-= custom/${MAKE_FILE} start of $@ rule =-=-=-=-='
${Q} ${RM} -f $@
${Q} ${AWK} '/^#if 0/{skp=1} {if(!skp){print $$0}} /^#endif/{skp=0}' \
${MAKE_FILE} > $@
${MAKE_FILE} | \
${GREP} -v '#\.#' | \
${SED} -e 's;^# SRC:.*;# SRC: non-GNU Makefile via;' \
-e 's;via$$;via ${MAKE} -f ${MAKE_FILE} custom/$@;' > $@
${Q} echo >> $@
${Q} echo 'Makefile.simple:' >> $@
${Q} echo ' $${Q} if [ ! -f Makefile.simple ]; then '"\\" >> $@
@@ -749,3 +767,7 @@ custtbl.o: ../str.h
custtbl.o: ../value.h
custtbl.o: ../zmath.h
custtbl.o: custtbl.c
##################################################
# NOTE: End of section from custom/Makefile.tail #
##################################################