Tweak generation of Gen_dummy_probes.pl
Use a static prolog file instead of generating the prolog from the existing perl script. Also, support generation of the file in a vpath build. Discussion: https://postgr.es/m/700620.1620662868@sss.pgh.pa.us
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@ -0,0 +1,19 @@
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#! /usr/bin/perl -w
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#-------------------------------------------------------------------------
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#
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# Gen_dummy_probes.pl
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# Perl script that generates probes.h file when dtrace is not available
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#
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# Portions Copyright (c) 2008-2021, PostgreSQL Global Development Group
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#
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#
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# IDENTIFICATION
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# src/backend/utils/Gen_dummy_probes.pl
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#
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# This program was generated by running perl's s2p over Gen_dummy_probes.sed
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#
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#-------------------------------------------------------------------------
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# turn off perlcritic for autogenerated code
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## no critic
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@ -92,10 +92,10 @@ $(top_builddir)/src/include/utils/probes.h: probes.h
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# Nothing depends on it, so it will never be called unless explicitly requested
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# The last two lines of the recipe format the script according to our
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# standard and put back some blank lines for improved readability.
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Gen_dummy_probes.pl: Gen_dummy_probes.sed
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perl -ni -e ' print; exit if /^\$$0/;' $@
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s2p -f $< | sed -e 1,4d -e '/# #/d' -e '$$d' >> $@
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perltidy --profile=../../tools/pgindent/perltidyrc $@
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Gen_dummy_probes.pl: Gen_dummy_probes.sed Gen_dummy_probes.pl.prolog
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cp $(srcdir)/Gen_dummy_probes.pl.prolog $@
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s2p -f $< | sed -e 1,3d -e '/# #/ d' -e '$$d' >> $@
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perltidy --profile=$(srcdir)/../../tools/pgindent/perltidyrc $@
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perl -pi -e '!$$lb && ( /^\t+#/ || /^# prototypes/ ) && print qq{\n};'\
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-e '$$lb = m/^\n/; ' $@
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@ -23,3 +23,5 @@ on Fedora it can be installed using `cpan App::s2p` or
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The Makefile contains a recipe for regenerating Gen_dummy_probes.pl, so all
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you need to do is once you have s2p installed is `make Gen_dummy_probes.pl`
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Note that in a VPATH build this will generate the file in the vpath tree,
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not the source tree.
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