Replace executable’s fingerprint in place

* admin/merge-gnulib (GNULIB_MODULES): Add memmem-simple.
(AVOIDED_MODULES): Add memchr.
* configure.ac (HAVE_PDUMPER): AC_SUBST it, too, for use in makefiles.
* lib/Makefile.in (libgnu_a_OBJECTS): Add fingerprint.o.
* lib/fingerprint.c: New file.
* lib/memmem.c, lib/str-two-way.h, m4/memmem.m4: New files,
copied from Gnulib.
* lib/fingerprint.h: Rename from src/fingerprint.h.
* lib-src/make-fingerprint.c: Include limits.h, sys/stat.h,
fingerprint.h, intprops.h, min-max.h.
(SSIZE_MAX): New macro, if not already defined.
(main): Without -r, Replace the fingerprint in the input file
instead of generating a fingerprint.c.
* lib/Makefile.in (libgnu_a_OBJECTS): Add fingerprint.o.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
* src/Makefile.in (HAVE_PDUMPER, MAKE_PDUMPER_FINGERPRINT):
New macros.
(temacs$(EXEEXT)): Use them to replace the fingerprint instead
of precalculating it.
(mostlyclean, ctagsfiles1): Do not worry about fingerprint.c.

1 files changed, 66 insertions, 0 deletions

diff --git a/lib/fingerprint.c b/lib/fingerprint.c
new file mode 100644
index 00000000000..e55de9c6da3
--- /dev/null
+++ b/lib/fingerprint.c
@@ -0,0 +1,66 @@
+/* Placeholder fingerprint for Emacs
+
+Copyright 2019 Free Software Foundation, Inc.
+
+This file is part of GNU Emacs.
+
+GNU Emacs is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
+
+GNU Emacs is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "fingerprint.h"
+
+/* This random fingerprint was generated by the shell command:
+
+   shuf -i 0-255 -n 32 -r | awk '{printf "   0x%.02X,\n", $0}'
+
+   In the final Emacs executable, this random fingerprint is replaced
+   by a fingerprint of the temporary Emacs executable that was built
+   along the way.  */
+
+unsigned char const fingerprint[] =
+  {
+   0xDE,
+   0x86,
+   0xBB,
+   0x99,
+   0xFF,
+   0xF5,
+   0x46,
+   0x9A,
+   0x9E,
+   0x3F,
+   0x9F,
+   0x5D,
+   0x9A,
+   0xDF,
+   0xF0,
+   0x91,
+   0xBD,
+   0xCD,
+   0xC1,
+   0xE8,
+   0x0C,
+   0x16,
+   0x1E,
+   0xAF,
+   0xB8,
+   0x6C,
+   0xE2,
+   0x2B,
+   0xB1,
+   0x24,
+   0xCE,
+   0xB0,
+  };