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+## $Id$
+## texk/web2c/etexdir/am/etex.am: Makefile fragment for e-TeX.
+##
+## Copyright 2015-2021 Karl Berry <tex-live@tug.org>
+## Copyright 2009-2015 Peter Breitenlohner <tex-live@tug.org>
+## You may freely use, modify and/or distribute this file.
+
+## e-TeX
+##
+if ETEX
+bin_PROGRAMS += etex
+endif ETEX
+EXTRA_PROGRAMS += etex
+
+etex_CPPFLAGS = $(AM_CPPFLAGS) $(ZLIB_INCLUDES)
+
+# With --enable-ipc, e-TeX may need to link with -lsocket.
+etex_LDADD = $(LDADD) $(ZLIB_LIBS) $(ipc_socketlibs)
+etex_DEPENDENCIES = $(ZLIB_DEPEND)
+
+# e-TeX C sources
+etex_c_h = etexini.c etex0.c etexcoerce.h etexd.h
+nodist_etex_SOURCES = $(etex_c_h) etex-pool.c
+dist_etex_SOURCES = etexdir/etexextra.c etexdir/etexextra.h etexdir/etex_version.h
+
+# We must create etexd.h and etexdir/etex_version.h before building the
+# etex_OBJECTS.
+etex_prereq = etexd.h etexdir/etex_version.h
+$(etex_OBJECTS): $(etex_prereq)
+
+$(etex_c_h): etex-web2c
+ @$(web2c) etex
+etex-web2c: etex.p $(web2c_texmf)
+ @$(web2c) etex
+
+etex-pool.c: etex.pool etexd.h $(makecpool_stamp)
+ $(makecpool) etex >$@ || rm -f $@
+
+# Tangling e-TeX
+etex.p etex.pool: etex-tangle
+ @$(texmf_tangle) etex etex
+etex-tangle: tangle$(EXEEXT) etex.web etex.ch tangle-sh
+ @$(texmf_tangle) etex etex
+
+# Extract etex version
+$(srcdir)/etexdir/etex_version.h: @MAINTAINER_MODE_TRUE@ etexdir/etex.ch
+ $(AM_V_GEN)grep '^@d eTeX_version_string==' $(srcdir)/etexdir/etex.ch \
+ | sed "s/^.*'-/#define ETEX_VERSION \"/;s/'.*$$/\"/" >$@
+
+# Generate etex.web
+etex.web: tie$(EXEEXT) $(etex_web_srcs)
+ $(tie_m) $(etex_web_srcs)
+etex_web_srcs = \
+ tex.web \
+ etexdir/etex.ch
+
+# Generate etex.ch
+etex.ch: tie$(EXEEXT) etex.web $(etex_ch_srcs)
+ $(tie_c) etex.web $(etex_ch_srcs)
+etex_ch_srcs = \
+ etexdir/tex.ch0 \
+ tex.ch \
+ zlib-fmt.ch \
+ enctexdir/enctex1.ch \
+ enctexdir/enctex-tex.ch \
+ enctexdir/enctex2.ch \
+ $(etex_ch_synctex) \
+ etexdir/tex.ch1 \
+ etexdir/tex.ech \
+ tex-binpool.ch
+##
+EXTRA_DIST += $(etex_web_srcs) $(etex_ch_srcs)
+
+DISTCLEANFILES += $(nodist_etex_SOURCES) etex.web etex.ch etex-web2c \
+ etex.p etex.pool etex-tangle
+
+EXTRA_DIST += \
+ etexdir/ChangeLog \
+ etexdir/etex_gen.tex
+
+# e-TeX Tests
+#
+etex_tests = etexdir/wprob.test etexdir/etriptest.test
+etexdir/wprob.log: etex$(EXEEXT)
+etexdir/etriptest.log: etex$(EXEEXT) dvitype$(EXEEXT) pltotf$(EXEEXT) tftopl$(EXEEXT)
+
+EXTRA_DIST += $(etex_tests)
+
+if ETEX
+TESTS += $(etex_tests)
+TRIPTRAP += etrip.diffs
+TRIPTRAP_CLEAN += etrip-clean
+endif ETEX
+DISTCLEANFILES += etrip.diffs
+
+## wprob.test
+EXTRA_DIST += tests/wprob.tex
+DISTCLEANFILES += ewprob.log ewprob.tex
+## etriptest
+etrip.diffs: etex$(EXEEXT) dvitype$(EXEEXT) pltotf$(EXEEXT) tftopl$(EXEEXT)
+ $(triptrap_diffs) $@
+.PHONY: etrip-clean
+etrip-clean:
+ rm -rf etripdir
+
+## Test data
+##
+EXTRA_DIST += \
+ etexdir/etrip/etrip.diffs \
+ etexdir/etrip/etrip.fot \
+ etexdir/etrip/etrip.log \
+ etexdir/etrip/etrip.out \
+ etexdir/etrip/etrip.pl \
+ etexdir/etrip/etrip.tex \
+ etexdir/etrip/etrip.typ \
+ etexdir/etrip/etrip1.in \
+ etexdir/etrip/etrip2.in \
+ etexdir/etrip/etrip3.in \
+ etexdir/etrip/etripin.log \
+ etexdir/etrip/etripman.tex \
+ etexdir/etrip/texmf.cnf \
+ etexdir/etrip/trip2.in
+