Fix spurious silent*.test failures for $CC != gcc

In some tests on automake-produced silent rules, we forced the
use of gcc depmode to improve testsuite coverage; but this has
unsurprisingly led to spurious failures when some non-GNU C
compilers were used.  So we are now careful to require GCC in
tests that force gcc depmode.

From reports by Ralf Wildenhues.

* silent5.test: Test removed, its content split into ...
* silent-many-generic.test, silent-many-gcc.test: ... these new
sister tests, the latter of which forces gcc depmode and lists
"gcc" in $required.
* silentlex.test: Test removed, its content split into ...
* silent-lex-generic.test, silent-lex-gcc.test: ... these new
sister tests, the latter of which forces gcc depmode and lists
"gcc" in $required.
* silentyacc.test: Test removed, its content split into ...
* silent-yacc-generic.test, silent-yacc-gcc.test: ... these new
sister tests, the latter of which forces gcc depmode and lists
"gcc" in $required.
* tests/Makefile.am (TESTS): Updated.

1 files changed, 143 insertions, 0 deletions

diff --git a/tests/silent-lex-gcc.test b/tests/silent-lex-gcc.test
new file mode 100755
index 000000000..426dc504c
--- /dev/null
+++ b/tests/silent-lex-gcc.test
@@ -0,0 +1,143 @@
+#!/bin/sh
+# Copyright (C) 2010 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 for Lex, forcing gcc depmode.
+# Keep this in sync with sister test `silent-lex-generic.test'.
+
+required='flex gcc'
+. ./defs || Exit 1
+
+set -e
+
+mkdir sub
+
+cat >>configure.in <<'EOF'
+AM_SILENT_RULES
+AM_PROG_CC_C_O
+AC_PROG_LEX
+AC_CONFIG_FILES([sub/Makefile])
+AC_OUTPUT
+EOF
+
+cat > Makefile.am <<'EOF'
+# Need generic and non-generic rules.
+bin_PROGRAMS = foo1 foo2
+foo1_SOURCES = foo.l
+foo2_SOURCES = $(foo1_SOURCES)
+foo2_CFLAGS = $(AM_CFLAGS)
+SUBDIRS = sub
+LDADD = $(LEXLIB)
+EOF
+
+cat > sub/Makefile.am <<'EOF'
+AUTOMAKE_OPTIONS = subdir-objects
+# Need generic and non-generic rules.
+bin_PROGRAMS = bar1 bar2
+bar1_SOURCES = bar.l
+bar2_SOURCES = $(bar1_SOURCES)
+bar2_CFLAGS = $(AM_CFLAGS)
+LDADD = $(LEXLIB)
+EOF
+
+cat > foo.l <<'EOF'
+%%
+"END"   return EOF;
+.
+%%
+EOF
+cp foo.l sub/bar.l
+
+$ACLOCAL
+$AUTOMAKE --add-missing
+$AUTOCONF
+
+# Force gcc ("fast") depmode.
+# This apparently useless "for" loop is here to simplify the syncing
+# with sister test `silent-lex-gcc.test'.
+for config_args in \
+  am_cv_CC_dependencies_compiler_type=gcc
+do
+  ./configure $config_args --enable-silent-rules
+
+  $MAKE >stdout || { cat stdout; Exit 1; }
+  cat stdout
+
+  $EGREP ' (-c|-o)' stdout && Exit 1
+  $EGREP '(mv|ylwrap) ' stdout && Exit 1
+
+  grep 'LEX .*foo\.' stdout
+  grep 'LEX .*bar\.' stdout
+  grep ' CC .*foo\.' stdout
+  grep ' CC .*bar\.' stdout
+  grep 'CCLD .*foo1' stdout
+  grep 'CCLD .*bar1' stdout
+  grep 'CCLD .*foo2' stdout
+  grep 'CCLD .*bar2' stdout
+
+  # 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
+
+  $MAKE >stdout || { cat stdout; Exit 1; }
+  cat stdout
+
+  $EGREP ' (-c|-o)' stdout && Exit 1
+  $EGREP '(mv|ylwrap) ' stdout && Exit 1
+
+  # Don't look for LEX, as probably lex hasn't been re-run.
+  grep ' CC .*foo\.' stdout
+  grep ' CC .*bar\.' stdout
+  grep 'CCLD .*foo1' stdout
+  grep 'CCLD .*bar1' stdout
+  grep 'CCLD .*foo2' stdout
+  grep 'CCLD .*bar2' stdout
+
+  # Ensure a truly clean rebuild.
+  $MAKE clean
+  rm -f foo.c sub/bar.c
+
+  $MAKE V=1 >stdout || { cat stdout; Exit 1; }
+  cat stdout
+
+  grep ' -c ' stdout
+  grep ' -o ' stdout
+  grep 'ylwrap ' stdout
+
+  $EGREP '(LEX|CC|CCLD) ' stdout && Exit 1
+
+  # 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
+
+  $MAKE V=1 >stdout || { cat stdout; Exit 1; }
+  cat stdout
+
+  # Don't look for ylwrap, as probably lex hasn't been re-run.
+  grep ' -c ' stdout
+  grep ' -o ' stdout
+
+  $EGREP '(LEX|CC|CCLD) ' stdout && Exit 1
+
+  # Ensure a truly clean reconfiguration/rebuild.
+  $MAKE clean
+  $MAKE maintainer-clean
+  rm -f foo.c sub/bar.c
+
+done
+
+: