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-rw-r--r--cmd/modutil/rules.mk26
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diff --git a/cmd/modutil/rules.mk b/cmd/modutil/rules.mk
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+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#
+# Some versions of yacc generate files that include platform-specific
+# system headers. For example, the yacc in Solaris 2.6 inserts
+# #include <values.h>
+# which does not exist on NT. For portability, always use Berkeley
+# yacc (such as the yacc in Linux) to generate files.
+#
+
+generate: installparse.c installparse.l
+
+installparse.c:
+ yacc -p Pk11Install_yy -d installparse.y
+ mv y.tab.c installparse.c
+ mv y.tab.h installparse.h
+
+installparse.l:
+ lex -olex.Pk11Install_yy.c -PPk11Install_yy installparse.l
+ @echo
+ @echo "**YOU MUST COMMENT OUT UNISTD.H FROM lex.Pk11Install_yy.cpp**"
+
+install.c: install-ds.h install.h