From d67b6386552672527cb6048cc5f0c08cac9423a5 Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20B=C3=A9rat?= <fberat@redhat.com>

Date: Thu, 8 Dec 2022 10:12:56 +0100

Subject: [PATCH v2] tests: Don't try to prevent flex to include unistd.h

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In-Reply-To: <20221212070752.1635797-1-fberat@redhat.com>

Hello,

Changes since v1:

 - The "--never-interactive" option is added to AM_LFLAGS whenever a

   yacc or lex test needs to execute make.

Since there is quite a lot of files being modified, please review carefully.

Hopefully, I didn't forget anything, nor edited files that were not needed,

multiple sets of eyes may be useful here.

-- 8< --

This patch is related to an effort to prepare Automake for future

GCC/Clang versions which set c99 as default standard to be used.

Future version of flex make the "NO_UNISTD" flag a no-op, and include

unistd.h by default.

In current version of flex, not having this header leads to implicit

function declarations that are not compatible with c99 standard.

On top of that, while flex dedicated test were having this macro set,

the yacc ones didn't have it despise their use of Flex.

For consistency, all the YACC/Flex related tests now have the

"--never-interactive" option set in AM_LFLAGS.

Modified files:

 *  t/cond35.sh

 *  t/lex-clean-cxx.sh

 *  t/lex-clean.sh

 *  t/lex-depend-cxx.sh

 *  t/lex-depend.sh

 *  t/lex-header.sh

 *  t/lex-lib-external.sh

 *  t/lex-lib.sh

 *  t/lex-libobj.sh

 *  t/lex-line.sh

 *  t/lex-multiple.sh

 *  t/lex-nodist.sh

 *  t/lex-noyywrap.sh

 *  t/lex-pr204.sh

 *  t/lex-subobj-nodep.sh

 *  t/lex3.sh

 *  t/lex5.sh

 *  t/lexvpath.sh

 *  t/silent-lex.sh

 *  t/silent-many-languages.sh

 *  t/silent-yacc-headers.sh

 *  t/silent-yacc.sh

 *  t/subpkg-yacc.sh

 *  t/suffix10.tap

 *  t/yacc-auxdir.sh

 *  t/yacc-basic.sh

 *  t/yacc-bison-skeleton-cxx.sh

 *  t/yacc-bison-skeleton.sh

 *  t/yacc-clean-cxx.sh

 *  t/yacc-clean.sh

 *  t/yacc-cxx-grepping.sh

 *  t/yacc-cxx.sh

 *  t/yacc-d-basic.sh

 *  t/yacc-d-cxx.sh

 *  t/yacc-d-vpath.sh

 *  t/yacc-deleted-headers.sh

 *  t/yacc-depend.sh

 *  t/yacc-depend2.sh

 *  t/yacc-dist-nobuild-subdir.sh

 *  t/yacc-dist-nobuild.sh

 *  t/yacc-dry.sh

 *  t/yacc-grepping.sh

 *  t/yacc-grepping2.sh

 *  t/yacc-headers-and-dist-pr47.sh

 *  t/yacc-line.sh

 *  t/yacc-misc.sh

 *  t/yacc-mix-c-cxx.sh

 *  t/yacc-nodist.sh

 *  t/yacc-pr204.sh

 *  t/yacc-subdir.sh

 *  t/yacc-vpath.sh

 *  t/yacc-weirdnames.sh

 *  t/yflags-cmdline-override.sh

 *  t/yflags-cxx.sh

 *  t/yflags-d-false-positives.sh

 *  t/yflags-force-conditional.sh

 *  t/yflags-force-override.sh

 *  t/yflags-var-expand.sh

 *  t/yflags.sh

---

 t/cond35.sh                     |  4 +---

 t/lex-clean-cxx.sh              |  4 ++--

 t/lex-clean.sh                  |  5 ++---

 t/lex-depend-cxx.sh             |  4 ++--

 t/lex-depend.sh                 |  5 ++---

 t/lex-header.sh                 |  6 ++----

 t/lex-lib-external.sh           |  5 ++---

 t/lex-lib.sh                    |  5 ++---

 t/lex-libobj.sh                 |  5 ++---

 t/lex-line.sh                   |  7 ++++---

 t/lex-multiple.sh               |  7 +++----

 t/lex-nodist.sh                 |  5 ++---

 t/lex-noyywrap.sh               |  5 ++---

 t/lex-pr204.sh                  |  5 ++---

 t/lex-subobj-nodep.sh           |  5 ++---

 t/lex3.sh                       |  5 ++---

 t/lex5.sh                       |  4 +---

 t/lexvpath.sh                   | 11 ++---------

 t/silent-lex.sh                 |  7 ++++---

 t/silent-many-languages.sh      |  1 +

 t/silent-yacc-headers.sh        |  1 +

 t/silent-yacc.sh                |  4 ++++

 t/subpkg-yacc.sh                |  2 ++

 t/suffix10.tap                  |  2 ++

 t/yacc-auxdir.sh                |  4 ++++

 t/yacc-basic.sh                 |  2 ++

 t/yacc-bison-skeleton-cxx.sh    |  2 ++

 t/yacc-bison-skeleton.sh        |  2 ++

 t/yacc-clean-cxx.sh             |  2 ++

 t/yacc-clean.sh                 |  2 ++

 t/yacc-cxx-grepping.sh          |  2 ++

 t/yacc-cxx.sh                   |  2 ++

 t/yacc-d-basic.sh               |  2 ++

 t/yacc-d-cxx.sh                 |  2 ++

 t/yacc-d-vpath.sh               |  2 ++

 t/yacc-deleted-headers.sh       |  2 ++

 t/yacc-depend.sh                |  2 ++

 t/yacc-depend2.sh               |  2 ++

 t/yacc-dist-nobuild-subdir.sh   |  2 ++

 t/yacc-dist-nobuild.sh          |  2 ++

 t/yacc-dry.sh                   |  2 ++

 t/yacc-grepping.sh              |  2 ++

 t/yacc-grepping2.sh             |  2 ++

 t/yacc-headers-and-dist-pr47.sh |  2 ++

 t/yacc-line.sh                  |  4 ++++

 t/yacc-misc.sh                  |  2 ++

 t/yacc-mix-c-cxx.sh             |  2 ++

 t/yacc-nodist.sh                |  2 ++

 t/yacc-pr204.sh                 |  2 ++

 t/yacc-subdir.sh                |  2 ++

 t/yacc-vpath.sh                 |  2 ++

 t/yacc-weirdnames.sh            |  2 ++

 t/yflags-cmdline-override.sh    |  2 ++

 t/yflags-cxx.sh                 |  2 ++

 t/yflags-d-false-positives.sh   |  2 ++

 t/yflags-force-conditional.sh   |  2 ++

 t/yflags-force-override.sh      |  2 ++

 t/yflags-var-expand.sh          |  2 ++

 t/yflags.sh                     |  2 ++

 59 files changed, 125 insertions(+), 63 deletions(-)

diff --git a/t/cond35.sh b/t/cond35.sh

index dc3b8aae9..8b044644e 100644

--- a/t/cond35.sh

+++ b/t/cond35.sh

@@ -30,6 +30,7 @@ EOF

 cat > Makefile.am <<'EOF'

 AM_YFLAGS               =       -d

+AM_LFLAGS               =       --never-interactive

 BUILT_SOURCES           =       tparse.h

@@ -58,9 +59,6 @@ $FGREP 'tparse.h' Makefile.in # For debugging.

 test $($FGREP -c 'tparse.h:' Makefile.in) -eq 1

 cat > tscan.l << 'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "END"   return EOF;

 %%

diff --git a/t/lex-clean-cxx.sh b/t/lex-clean-cxx.sh

index 3632d5c87..9f628accd 100644

--- a/t/lex-clean-cxx.sh

+++ b/t/lex-clean-cxx.sh

@@ -29,6 +29,8 @@ AC_OUTPUT

 END

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 bin_PROGRAMS = foo bar baz qux

 foo_SOURCES = mainfoo.cc parsefoo.lxx

@@ -55,8 +57,6 @@ cat > parsefoo.lxx << 'END'

 %{

 #define YY_DECL int yylex (void)

 extern "C" YY_DECL;

-#define YY_NO_UNISTD_H 1

-int isatty (int fd) { return 0; }

 %}

 %%

 "GOOD"   return EOF;

diff --git a/t/lex-clean.sh b/t/lex-clean.sh

index 1ee7d8f5b..4668e97c7 100644

--- a/t/lex-clean.sh

+++ b/t/lex-clean.sh

@@ -29,6 +29,8 @@ AC_OUTPUT

 END

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 bin_PROGRAMS = foo bar baz qux

 foo_SOURCES = main.c lexer.l

@@ -52,9 +54,6 @@ LDADD = $(LEXLIB)

 END

 cat > lexer.l << 'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "GOOD"   return EOF;

 .

diff --git a/t/lex-depend-cxx.sh b/t/lex-depend-cxx.sh

index 60615a54e..51bd67b7b 100644

--- a/t/lex-depend-cxx.sh

+++ b/t/lex-depend-cxx.sh

@@ -27,6 +27,8 @@ AC_OUTPUT

 END

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 noinst_PROGRAMS = joe moe

 joe_SOURCES = joe.ll

 moe_SOURCES = moe.l++

@@ -48,8 +50,6 @@ cat > joe.ll << 'END'

 %{

 #define YY_DECL int yylex (void)

 extern "C" YY_DECL;

-#define YY_NO_UNISTD_H 1

-int isatty (int fd) { return 0; }

 %}

 %%

 "foo" return EOF;

diff --git a/t/lex-depend.sh b/t/lex-depend.sh

index 16f937ef1..68cc5ee7b 100644

--- a/t/lex-depend.sh

+++ b/t/lex-depend.sh

@@ -27,6 +27,8 @@ AC_OUTPUT

 END

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 bin_PROGRAMS = zoo

 zoo_SOURCES = joe.l

 LDADD = $(LEXLIB)

@@ -42,9 +44,6 @@ test-obj-updated: joe.$(OBJEXT)

 END

 cat > joe.l << 'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "foo" return EOF;

 .

diff --git a/t/lex-header.sh b/t/lex-header.sh

index 22567642e..48b42457a 100644

--- a/t/lex-header.sh

+++ b/t/lex-header.sh

@@ -33,6 +33,8 @@ AC_OUTPUT

 END

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 bin_PROGRAMS = foo

 foo_SOURCES = lexer.l main.c mylex.h

 foo_LFLAGS = --header-file=mylex.h

@@ -45,9 +47,6 @@ END

 cat > lexer.l << 'END'

 %option noyywrap

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "GOOD"   return EOF;

 .

@@ -55,7 +54,6 @@ cat > lexer.l << 'END'

 END

 cat > main.c <<'END'

-#define YY_NO_UNISTD_H 1

 #include "mylex.h"

 int main (void)

 {

diff --git a/t/lex-lib-external.sh b/t/lex-lib-external.sh

index 85403612f..25ad2a39b 100644

--- a/t/lex-lib-external.sh

+++ b/t/lex-lib-external.sh

@@ -28,6 +28,8 @@ AC_OUTPUT

 END

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 bin_PROGRAMS = lexer

 lexer_SOURCES = foo.l

 lexer_LDADD = $(LEXLIB)

@@ -42,9 +44,6 @@ have-lexlib:

 END

 cat > foo.l <<'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "GOOD"   return EOF;

 .

diff --git a/t/lex-lib.sh b/t/lex-lib.sh

index f0a0d37f6..7734fd228 100644

--- a/t/lex-lib.sh

+++ b/t/lex-lib.sh

@@ -31,6 +31,8 @@ AC_OUTPUT

 END

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 bin_PROGRAMS = lexer

 lexer_SOURCES = foo.l

 lexer_LDADD = $(LEXLIB)

@@ -47,9 +49,6 @@ int yywrap (void)

 END

 cat > foo.l <<'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "END" return EOF;

 .

diff --git a/t/lex-libobj.sh b/t/lex-libobj.sh

index b26381fcf..6e36a98ed 100644

--- a/t/lex-libobj.sh

+++ b/t/lex-libobj.sh

@@ -32,6 +32,8 @@ AC_OUTPUT

 END

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 noinst_PROGRAMS = foo

 foo_SOURCES = foo.l

 foo_LDADD = $(LEXLIB) $(LIBOBJS)

@@ -45,9 +47,6 @@ int yywrap (void)

 END

 cat > foo.l <<'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "END" return EOF;

 .

diff --git a/t/lex-line.sh b/t/lex-line.sh

index 340800ef2..5f9145847 100644

--- a/t/lex-line.sh

+++ b/t/lex-line.sh

@@ -32,6 +32,8 @@ END

 mkdir dir sub sub/dir

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 SUBDIRS = sub

 bin_PROGRAMS = foo bar

 LDADD = $(LEXLIB)

@@ -44,6 +46,8 @@ bar-quux.@OBJEXT@: bar-quux.c

 END

 cat > sub/Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 AUTOMAKE_OPTIONS = subdir-objects

 noinst_PROGRAMS = foo bar

 ## We already used $(LEXLIB) above, so try @LEXLIB@ now.

@@ -57,9 +61,6 @@ dir/quux.@OBJEXT@: dir/quux.c

 END

 cat > zardoz.l << 'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "END"  return EOF;

 .

diff --git a/t/lex-multiple.sh b/t/lex-multiple.sh

index 9565bd6b8..6486a012f 100644

--- a/t/lex-multiple.sh

+++ b/t/lex-multiple.sh

@@ -31,7 +31,9 @@ AC_PROG_RANLIB

 AC_OUTPUT

 END

-cat > Makefile.am << 'END'

+cat > Makefile.am <<  'END'

+AM_LFLAGS = --never-interactive

+

 bin_PROGRAMS = zardoz

 zardoz_SOURCES = main.c

@@ -72,9 +74,6 @@ int main (int argc, char *argv[])

 END

 cat > 0.l << 'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "VANILLA" { printf (":%s:\n", yytext); return 121; }

 . { printf (":%s:\n", yytext); return 1; }

diff --git a/t/lex-nodist.sh b/t/lex-nodist.sh

index 73e23a13e..d499aea7f 100644

--- a/t/lex-nodist.sh

+++ b/t/lex-nodist.sh

@@ -31,6 +31,8 @@ AC_OUTPUT

 END

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 .PHONY: test-build test-dist

 test-build: all

 	ls -l

@@ -45,9 +47,6 @@ check-local: test-build test-dist

 lexer.l:

 	rm -f $@ $@-t

 	:; { : \

-	  && echo '%{' \

-	  && echo '#define YY_NO_UNISTD_H 1' \

-	  && echo '%}' \

 	  && echo '%%' \

 	  && echo '"GOOD" return EOF;' \

 	  && echo '.'; \

diff --git a/t/lex-noyywrap.sh b/t/lex-noyywrap.sh

index 1c61a1ab3..5ec68b9ba 100644

--- a/t/lex-noyywrap.sh

+++ b/t/lex-noyywrap.sh

@@ -26,6 +26,8 @@ AC_OUTPUT

 END

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 bin_PROGRAMS = foo

 foo_SOURCES = foo.l

@@ -37,9 +39,6 @@ END

 cat > foo.l << 'END'

 %option noyywrap

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "GOOD"   return EOF;

 .

diff --git a/t/lex-pr204.sh b/t/lex-pr204.sh

index ebfaafef5..cbad1c266 100644

--- a/t/lex-pr204.sh

+++ b/t/lex-pr204.sh

@@ -35,6 +35,8 @@ EOF

 # The LEXER2 intermediate variable is there to make sure Automake

 # matches 'nodist_' against the right variable name...

 cat > Makefile.am << 'EOF'

+AM_LFLAGS = --never-interactive

+

 EXTRA_PROGRAMS = foo

 LEXER2 = lexer2.l

 nodist_foo_SOURCES = lexer.l $(LEXER2)

@@ -49,9 +51,6 @@ distdirtest: distdir

 EOF

 cat > lexer.l << 'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "GOOD"   return EOF;

 .

diff --git a/t/lex-subobj-nodep.sh b/t/lex-subobj-nodep.sh

index f8bb87a9c..8ef4d68b1 100644

--- a/t/lex-subobj-nodep.sh

+++ b/t/lex-subobj-nodep.sh

@@ -28,6 +28,8 @@ END

 cat >Makefile.am <<\END

 AUTOMAKE_OPTIONS = subdir-objects

+AM_LFLAGS = --never-interactive

+

 bin_PROGRAMS = p1 p2

 p1_SOURCES = sub1/s1.l

 p2_SOURCES = sub2/s2.l

@@ -37,9 +39,6 @@ END

 mkdir sub1 sub2

 cat >sub1/s1.l <<\END

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "END"   return EOF;

 .

diff --git a/t/lex3.sh b/t/lex3.sh

index 41b87dc06..4a20f85da 100644

--- a/t/lex3.sh

+++ b/t/lex3.sh

@@ -28,14 +28,13 @@ AC_OUTPUT

 END

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 noinst_PROGRAMS = foo

 foo_SOURCES = foo.l

 END

 cat > foo.l << 'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "GOOD"   return EOF;

 .

diff --git a/t/lex5.sh b/t/lex5.sh

index 3d84d9b41..687903e65 100644

--- a/t/lex5.sh

+++ b/t/lex5.sh

@@ -28,6 +28,7 @@ END

 cat > Makefile.am << 'END'

 AUTOMAKE_OPTIONS  = subdir-objects

 LDADD             = @LEXLIB@

+AM_LFLAGS         = --never-interactive

 bin_PROGRAMS    = foo/foo

 foo_foo_SOURCES = foo/foo.l

@@ -36,9 +37,6 @@ END

 mkdir foo

 cat > foo/foo.l << 'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "END"   return EOF;

 .

diff --git a/t/lexvpath.sh b/t/lexvpath.sh

index 5185a1f71..d064fd2bd 100644

--- a/t/lexvpath.sh

+++ b/t/lexvpath.sh

@@ -37,6 +37,8 @@ AC_OUTPUT

 END

 cat > Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 bin_PROGRAMS = foo

 foo_SOURCES = lexer.l foo.c

 LDADD = $(LEXLIB)

@@ -44,9 +46,6 @@ END

 # Original lexer, with a "foobar" comment

 cat > lexer.l << 'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "END" return EOF;

 .

@@ -89,9 +88,6 @@ $sleep

 # New lexer, with 'fubar' comment.

 cat > ../lexer.l << 'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "END" return EOF;

 .

@@ -112,9 +108,6 @@ $sleep

 # New lexer, with 'maude' comment.

 cat > ../lexer.l << 'END'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "END" return EOF;

 .

diff --git a/t/silent-lex.sh b/t/silent-lex.sh

index cfe1a9b5d..e424afc38 100644

--- a/t/silent-lex.sh

+++ b/t/silent-lex.sh

@@ -28,6 +28,8 @@ AC_OUTPUT

 EOF

 cat > Makefile.am <<'EOF'

+AM_LFLAGS = --never-interactive

+

 # Need generic and non-generic rules.

 bin_PROGRAMS = foo1 foo2

 foo1_SOURCES = foo.l

@@ -40,6 +42,8 @@ EOF

 cat > sub/Makefile.am <<'EOF'

 AUTOMAKE_OPTIONS = subdir-objects

+AM_LFLAGS = --never-interactive

+

 # Need generic and non-generic rules.

 bin_PROGRAMS = bar1 bar2

 bar1_SOURCES = bar.l

@@ -50,9 +54,6 @@ LDADD = $(LEXLIB)

 EOF

 cat > foo.l <<'EOF'

-%{

-#define YY_NO_UNISTD_H 1

-%}

 %%

 "END"   return EOF;

 .

diff --git a/t/silent-many-languages.sh b/t/silent-many-languages.sh

index 4edb46884..85773d339 100644

--- a/t/silent-many-languages.sh

+++ b/t/silent-many-languages.sh

@@ -151,6 +151,7 @@ ba2_YFLAGS = -v

 ba2_LFLAGS = -n

 ba2_LDADD = $(LEXLIB)

 AM_YFLAGS = -d

+AM_LFLAGS = --never-interactive

 BUILT_SOURCES = baz6.h

 EOF

diff --git a/t/silent-yacc-headers.sh b/t/silent-yacc-headers.sh

index 98ae45b8a..f64342c82 100644

--- a/t/silent-yacc-headers.sh

+++ b/t/silent-yacc-headers.sh

@@ -31,6 +31,7 @@ EOF

 cat > Makefile.am <<'EOF'

 # Need generic and non-generic rules.

 AM_YFLAGS = -d

+AM_LFLAGS = --never-interactive

 bin_PROGRAMS = foo bar

 foo_SOURCES = parse.y

 bar_SOURCES = $(foo_SOURCES)

diff --git a/t/silent-yacc.sh b/t/silent-yacc.sh

index 9645aff83..d89ff49a7 100644

--- a/t/silent-yacc.sh

+++ b/t/silent-yacc.sh

@@ -29,6 +29,8 @@ AC_OUTPUT

 EOF

 cat > Makefile.am <<'EOF'

+AM_LFLAGS = --never-interactive

+

 # Need generic and non-generic rules.

 bin_PROGRAMS = foo1 foo2

 foo1_SOURCES = foo.y

@@ -40,6 +42,8 @@ EOF

 cat > sub/Makefile.am <<'EOF'

 AUTOMAKE_OPTIONS = subdir-objects

+AM_LFLAGS = --never-interactive

+

 # Need generic and non-generic rules.

 bin_PROGRAMS = bar1 bar2

 bar1_SOURCES = bar.y

diff --git a/t/subpkg-yacc.sh b/t/subpkg-yacc.sh

index edd14532b..782ee0957 100644

--- a/t/subpkg-yacc.sh

+++ b/t/subpkg-yacc.sh

@@ -61,6 +61,8 @@ AC_OUTPUT

 EOF

 cat >lib/Makefile.am <<'EOF'

+AM_LFLAGS = --never-interactive

+

 noinst_LIBRARIES = liblib.a

 liblib_a_SOURCES = src/x.c foo.y

 EXTRA_liblib_a_SOURCES = bar.y

diff --git a/t/suffix10.tap b/t/suffix10.tap

index 3869d07fd..8d3dc1756 100644

--- a/t/suffix10.tap

+++ b/t/suffix10.tap

@@ -31,6 +31,8 @@ AC_OUTPUT

 EOF

 cat >Makefile.am << 'END'

+AM_LFLAGS = --never-interactive

+

 lib_LTLIBRARIES = libfoo.la

 libfoo_la_SOURCES = foo.x_

 .x_.y:

diff --git a/t/yacc-auxdir.sh b/t/yacc-auxdir.sh

index be8ac4fd4..f6ff7de48 100644

--- a/t/yacc-auxdir.sh

+++ b/t/yacc-auxdir.sh

@@ -35,12 +35,16 @@ cat > Makefile.am << 'END'

 SUBDIRS = sub

 bin_PROGRAMS = foo