From 3f1fa9150b2b82ae7ea1816e51b637a74f930489 Mon Sep 17 00:00:00 2001
From: Tom Tromey <tromey@redhat.com>
Date: Sun, 27 Apr 1997 17:45:11 +0000
Subject: [PATCH] no accidental config subs in automake

---
 ChangeLog          | 6 ++++++
 Makefile.am        | 8 ++++++++
 Makefile.in        | 5 +++++
 automake.in        | 4 +++-
 lib/am/Makefile.am | 8 ++++++++
 5 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 676bd9ee..4a97beb8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 Sun Apr 27 11:03:36 1997  Tom Tromey  <tromey@cygnus.com>
 
+	* Makefile.am: Check to make sure there are no accidental
+	configure substitutions.
+
+	* automake.in (handle_texinfo): Don't allow configure substitution
+	on @MAKEINFO@ here.
+
 	* automake.in (handle_yacc_lex_cxx): ._c and ._o files both depend
 	on $(ANSI2KNR).
 
diff --git a/Makefile.am b/Makefile.am
index d4603bf8..49d04d7f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -51,6 +51,14 @@ perl4-check: automake aclocal
 # Some simple checks, and then ordinary check.  These are only really
 # guaranteed to work on my machine.
 maintainer-check: automake aclocal
+## This check avoids accidental configure substitutions in the source.
+## There are exactly 8 lines that should be modified.  This works out
+## to 24 lines of diffs.
+	@if test `diff automake.in automake | wc -l` -ne 24; then \
+	  echo "found too many diffs between automake.in and automake"; 1>&2; \
+	  diff -c automake.in automake; \
+	  exit 1; \
+	fi
 ## Syntax check with default Perl (on my machine, Perl 5).
 	$(PERL) -c -w automake
 	$(PERL) -c -w aclocal
diff --git a/Makefile.in b/Makefile.in
index 486f34d0..edc37416 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -510,6 +510,11 @@ perl4-check: automake aclocal
 # Some simple checks, and then ordinary check.  These are only really
 # guaranteed to work on my machine.
 maintainer-check: automake aclocal
+	@if test `diff automake.in automake | wc -l` -ne 24; then \
+	  echo "found too many diffs between automake.in and automake"; 1>&2; \
+	  diff -c automake.in automake; \
+	  exit 1; \
+	fi
 	$(PERL) -c -w automake
 	$(PERL) -c -w aclocal
 	@if test `fgrep '$${' $(srcdir)/[a-z]*.am | fgrep -v '$$$$' | wc -l` -ne 0; then \
diff --git a/automake.in b/automake.in
index 9b3b3ea0..4a1e5568 100755
--- a/automake.in
+++ b/automake.in
@@ -1943,7 +1943,9 @@ sub handle_texinfo
     # intimate knowledge of the structure of the texinfo distribution.
     &define_program_variable ('MAKEINFO', 'build', 'texinfo/makeinfo',
 			      'makeinfo',
-			      '@MAKEINFO@');
+			      # Circumlocution to avoid accidental
+			      # configure substitution.
+			      '@MAKE' . 'INFO@');
     &define_program_variable ('TEXI2DVI', 'src', 'texinfo/util',
 			      'texi2dvi');
 
diff --git a/lib/am/Makefile.am b/lib/am/Makefile.am
index d4603bf8..49d04d7f 100644
--- a/lib/am/Makefile.am
+++ b/lib/am/Makefile.am
@@ -51,6 +51,14 @@ perl4-check: automake aclocal
 # Some simple checks, and then ordinary check.  These are only really
 # guaranteed to work on my machine.
 maintainer-check: automake aclocal
+## This check avoids accidental configure substitutions in the source.
+## There are exactly 8 lines that should be modified.  This works out
+## to 24 lines of diffs.
+	@if test `diff automake.in automake | wc -l` -ne 24; then \
+	  echo "found too many diffs between automake.in and automake"; 1>&2; \
+	  diff -c automake.in automake; \
+	  exit 1; \
+	fi
 ## Syntax check with default Perl (on my machine, Perl 5).
 	$(PERL) -c -w automake
 	$(PERL) -c -w aclocal
-- 
2.43.5