Hash :
ca0ba5df
Author :
Date :
2011-10-24T23:18:34
tests: fix spurious failures due to missing 'yywrap()' function The AC_PROG_LEX Autoconf macro does not diagnose a failure to find the "lex library" expected to provide a `yywrap' function (function which is required to link most lex-generated programs). On the contrary, when all the link attempts (i.e., with `-ll' and `-lfl') fail, configure declares that no lex library is needed, and simply proceeds with the configuration process -- only for the build to possibly fail later, at make time. This behaviour is intended; the Autoconf manual reads: ``You are encouraged to use Flex in your sources, since it is both more pleasant to use than plain Lex and the C source it produces is portable. In order to ensure portability, however, you must either provide a function `yywrap' or, if you don't use it (e.g., your scanner has no `#include'-like feature), simply include a `%noyywrap' statement in the scanner's source.'' This AC_PROG_LEX behaviour is causing some spurious failures of the Automake testsuite in environments which lack a proper library providing `yywrap' (this happens for example on Fedora-based systems). The proper workaround is to simply provide a fall-back implementation of `yywrap' in our lexers. * tests/cond35.test: Provide a dummy `yywrap' function. * tests/lex3.test: Likewise. * tests/silent-lex-generic.test: Likewise. * tests/silent-lex-gcc.test: Likewise. * tests/silent-many-generic.test: Likewise. * tests/silent-many-gcc.test: Likewise. Reported by Jim Meyering: <http://lists.gnu.org/archive/html/automake-patches/2011-10/msg00092.html> Cherry-picked (with some edits) from commits `v1.11-1085-gb5c3968' (master) and `v1.11-871-geb147a1' (testsuite-work).
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#!/bin/sh
# Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
#
# This program 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 2, or (at your option)
# any later version.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
# Check silent-rules mode, with many languages at once.
# This test partly overlaps with other silent*.test, but it serves as
# a stress test by using many different languages at once -- so don't
# remove this test script.
# This test should work with generic compilers; keep it in sync with
# sister test `silent-many-gcc.test', which requires the GNU compilers
# and forces the use of gcc depmode.
# FIXME: generic C++/Fortran compilers should suffice here
required='g++ gfortran flex bison'
. ./defs || Exit 1
set -e
# Avoids too much code duplication.
do_and_check_silent_build ()
{
case $1 in
--rebuild) rebuild=true;;
*) rebuild=false;;
esac
$MAKE >stdout || { cat stdout; Exit 1; }
cat stdout
# Avoid spurious failures with SunStudio Fortran compilers.
sed '/^NOTICE:/d' stdout > t
mv -f t stdout
cat stdout
$EGREP ' (-c|-o)' stdout && Exit 1
$EGREP '(mv|ylwrap) ' stdout && Exit 1
grep 'CXX .*foo1\.' stdout
grep 'CXX .*baz1\.' stdout
grep 'FC .*foo2\.' stdout
grep 'FC .*baz2\.' stdout
grep 'F77 .*foo3\.' stdout
grep 'F77 .*baz3\.' stdout
grep ' CC .*foo5\.' stdout
grep ' CC .*baz5\.' stdout
grep ' CC .*foo6\.' stdout
grep ' CC .*baz6\.' stdout
grep 'CXXLD .*foo' stdout
grep 'CCLD .*bar' stdout
grep 'CXXLD .*baz' stdout
grep 'CCLD .*bla' stdout
if $rebuild; then :; else
grep 'YACC .*foo6\.' stdout
grep 'YACC .*baz6\.' stdout
grep 'LEX .*foo5\.' stdout
grep 'LEX .*baz5\.' stdout
fi
unset rebuild
}
# Avoids too much code duplication.
do_and_check_verbose_build ()
{
case $1 in
--rebuild) rebuild=true;;
*) rebuild=false;;
esac
$MAKE V=1 >stdout || { cat stdout; Exit 1; }
cat stdout
grep ' -c ' stdout
grep ' -o ' stdout
$EGREP '(CC|CXX|FC|F77|LD) ' stdout && Exit 1
if $rebuild; then :; else
grep 'ylwrap ' stdout
$EGREP '(LEX|YACC) ' stdout && Exit 1
fi
unset rebuild
}
mkdir sub
cat >>configure.in <<'EOF'
AM_SILENT_RULES
AM_PROG_CC_C_O
AC_PROG_CXX
AC_PROG_F77
AC_PROG_FC
AC_PROG_LEX
AC_PROG_YACC
AC_CONFIG_FILES([sub/Makefile])
AC_OUTPUT
EOF
cat > Makefile.am <<'EOF'
# Need generic and non-generic rules.
bin_PROGRAMS = foo bar fo2
bar_CFLAGS = $(AM_CFLAGS)
foo_SOURCES = foo1.cpp foo2.f90 foo3.f foo5.l foo6.y
fo2_SOURCES = $(foo_SOURCES)
fo2_CPPFLAGS = $(AM_CPPFLAGS)
fo2_FFLAGS = $(AM_FFLAGS)
fo2_FCFLAGS = $(AM_FCFLAGS)
SUBDIRS = sub
AM_YFLAGS = -d
LDADD = $(LEXLIB)
BUILT_SOURCES = foo6.h
EOF
cat > sub/Makefile.am <<'EOF'
AUTOMAKE_OPTIONS = subdir-objects
# Need generic and non-generic rules.
bin_PROGRAMS = baz bla ba2
bla_CFLAGS = $(AM_CFLAGS)
baz_SOURCES = baz1.cpp baz2.f90 baz3.f baz5.l baz6.y
ba2_SOURCES = $(baz_SOURCES)
ba2_CPPFLAGS = $(AM_CPPFLAGS)
ba2_FFLAGS = $(AM_FFLAGS)
ba2_FCFLAGS = $(AM_FCFLAGS)
AM_YFLAGS = -d
LDADD = $(LEXLIB)
BUILT_SOURCES = baz6.h
EOF
cat > foo1.cpp <<'EOF'
int main ()
{
return 0;
}
EOF
cat > foo2.f90 <<'EOF'
subroutine foo2
return
end
EOF
cat > foo3.f <<'EOF'
subroutine foo3
return
end
EOF
cat > foo5.l <<'EOF'
%%
"END" return EOF;
.
%%
/* Avoid possible link errors. */
int yywrap (void)
{
return 1;
}
EOF
cat > foo6.y <<'EOF'
%{
void yyerror (char *s) {}
%}
%token EOF
%%
fubar : 'f' 'o' 'o' 'b' 'a' 'r' EOF {};
EOF
cp foo1.cpp bar.c
cp foo1.cpp sub/baz.c
cp foo1.cpp sub/bla.c
cp foo1.cpp sub/baz1.cpp
cp foo2.f90 sub/baz2.f90
cp foo3.f sub/baz3.f
cp foo5.l sub/baz5.l
cp foo6.y sub/baz6.y
$ACLOCAL
$AUTOMAKE --add-missing
$AUTOCONF
# Force dependency tracking explicitly, so that slow dependency
# extractors are not rejected. Try also with dependency tracking
# explicitly disabled.
for config_args in \
--enable-dependency-tracking --disable-dependency-tracking
do
./configure $config_args --enable-silent-rules
do_and_check_silent_build
# Cleaning and then rebuilding with the same V flag (and without
# removing the generated sources in between) shouldn't trigger a
# different set of rules.
$MAKE clean
do_and_check_silent_build --rebuild
# Ensure a clean rebuild.
$MAKE clean
# This is required, since these files are not removed by `make clean'
# (as dictated by the GNU Coding Standards).
rm -f foo5.c foo6.[ch] sub/baz5.c sub/baz6.[ch]
do_and_check_verbose_build
# Cleaning and then rebuilding with the same V flag (and without
# removing the generated sources in between) shouldn't trigger a
# different set of rules.
$MAKE clean
do_and_check_verbose_build --rebuild
# Ensure a clean reconfiguration/rebuild.
$MAKE clean
$MAKE maintainer-clean
done
: