SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>

SPDX-License-Identifier: GPL-2.0-only

Add DESTDIR support to autoconf 2.12.

--- Makefile.in	2022-02-19 19:42:37.817348420 +1100
+++ Makefile.in	2022-02-19 19:44:34.067256768 +1100
@@ -121,27 +121,27 @@
 	cd testsuite && ${MAKE} AUTOCONF=${bindir}/autoconf $@
 
 installdirs:
-	$(SHELL) ${srcdir}/mkinstalldirs $(bindir) $(infodir) $(acdatadir)
+	$(SHELL) ${srcdir}/mkinstalldirs $(DESTDIR)$(bindir) $(DESTDIR)$(infodir) $(DESTDIR)$(acdatadir)
 
 install: all $(M4FILES) acconfig.h installdirs install-info
 	@case `$(M4) --help < /dev/null 2>&1` in \
 	*reload-state*) echo installing frozen m4 files; \
-	  $(M4) -F $(acdatadir)/autoconf.m4f -I${srcdir} ${srcdir}/autoconf.m4 ; \
-	  $(M4) -F $(acdatadir)/autoheader.m4f -I${srcdir} ${srcdir}/autoheader.m4 ;; \
+	  $(M4) -F $(DESTDIR)$(acdatadir)/autoconf.m4f -I${srcdir} ${srcdir}/autoconf.m4 ; \
+	  $(M4) -F $(DESTDIR)$(acdatadir)/autoheader.m4f -I${srcdir} ${srcdir}/autoheader.m4 ;; \
 	*traditional*) ;; \
 	*) echo Error: Autoconf requires GNU m4 1.1 or later; exit 1 ;; \
 	esac
 	for p in $(ASCRIPTS); do \
-	  $(INSTALL_PROGRAM) $$p $(bindir)/`echo $$p|sed '$(transform)'`; \
+	  $(INSTALL_PROGRAM) $$p $(DESTDIR)$(bindir)/`echo $$p|sed '$(transform)'`; \
 	done
 	for i in $(M4FILES) acconfig.h; do \
-	$(INSTALL_DATA) $(srcdir)/$$i $(acdatadir)/$$i; \
+	$(INSTALL_DATA) $(srcdir)/$$i $(DESTDIR)$(acdatadir)/$$i; \
 	done
 	-if test -f autoscan; then \
-	$(INSTALL_PROGRAM) autoscan $(bindir)/`echo autoscan|sed '$(transform)'`; \
+	$(INSTALL_PROGRAM) autoscan $(DESTDIR)$(bindir)/`echo autoscan|sed '$(transform)'`; \
 	for i in acfunctions acheaders acidentifiers acprograms \
 	  acmakevars; do \
-	$(INSTALL_DATA) $(srcdir)/$$i $(acdatadir)/$$i; \
+	$(INSTALL_DATA) $(srcdir)/$$i $(DESTDIR)$(acdatadir)/$$i; \
 	done; \
 	else :; fi
 
@@ -149,11 +149,11 @@
 install-info: info installdirs
 	if test -f autoconf.info; then \
 	  for i in *.info*; do \
-	    $(INSTALL_DATA) $$i $(infodir)/$$i; \
+	    $(INSTALL_DATA) $$i $(DESTDIR)$(infodir)/$$i; \
 	  done; \
 	else \
 	  for i in $(srcdir)/*.info*; do \
-	    $(INSTALL_DATA) $$i $(infodir)/`echo $$i | sed 's|^$(srcdir)/||'`; \
+	    $(INSTALL_DATA) $$i $(DESTDIR)$(infodir)/`echo $$i | sed 's|^$(srcdir)/||'`; \
 	  done; \
 	fi