# @configure_input@                                     -*- shell-script -*-
# Configurable variable values for Bison test suite.

# Copyright (C) 2000-2015, 2018-2020 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 3 of the License, 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/>.

# We need 'testsuite.h' (srcdir/test).
CPPFLAGS="-I$abs_top_srcdir/tests @CPPFLAGS@"

# Don't just check if $POSIXLY_CORRECT is set, as Bash, when launched
# as /bin/sh, sets the shell variable POSIXLY_CORRECT to y, but not
# the environment variable.
if env | grep '^POSIXLY_CORRECT=' >/dev/null; then
  POSIXLY_CORRECT_IS_EXPORTED=true
else
  POSIXLY_CORRECT_IS_EXPORTED=false
fi

## ------------------- ##
## C/C++ Compilation.  ##
## ------------------- ##

: ${CC='@CC@'}
: ${CXX='@CXX@'}

# Is the compiler GCC?
: ${GCC='@GCC@'}

# Sometimes a test group needs to ignore gcc warnings, so it locally
# sets CFLAGS to this.
: ${NO_WERROR_CFLAGS='@CFLAGS@  @WARN_CFLAGS@  @WARN_CFLAGS_TEST@'}
: ${NO_WERROR_CXXFLAGS='@CXXFLAGS@ @WARN_CXXFLAGS@ @WARN_CXXFLAGS_TEST@'}
: ${WNO_DEPRECATED_CXXFLAGS='@WNO_DEPRECATED_CXXFLAGS@'}

# But most of the time, we want -Werror.
: ${CFLAGS="$NO_WERROR_CFLAGS  @WERROR_CFLAGS@"}
: ${CXXFLAGS="$NO_WERROR_CXXFLAGS @WERROR_CXXFLAGS@"}

# If 'exit 77'; skip all C++ tests; otherwise ':'.
: ${BISON_CXX_WORKS='@BISON_CXX_WORKS@'}

# Compiler flags to disable exception support.
: ${NO_EXCEPTIONS_CXXFLAGS='@NO_EXCEPTIONS_CXXFLAGS@'}

# Requiring a specific C++ standard.
: ${CXX98_CXXFLAGS='@CXX98_CXXFLAGS@'}
: ${CXX03_CXXFLAGS='@CXX03_CXXFLAGS@'}
: ${CXX11_CXXFLAGS='@CXX11_CXXFLAGS@'}
: ${CXX14_CXXFLAGS='@CXX14_CXXFLAGS@'}
: ${CXX17_CXXFLAGS='@CXX17_CXXFLAGS@'}
: ${CXX2A_CXXFLAGS='@CXX2A_CXXFLAGS@'}

# Be sure that the C++ compiler is not broken because of gnulib.  This
# cannot be checked in configure (gnulib is not parameterized yet),
# and checking this in every C++ test in AC_COMPILE_CXX is too costly.
#
# http://lists.gnu.org/archive/html/bug-bison/2013-06/msg00001.html
#
# FIXME: Check (say 2014) whether this is still needed.
if $BISON_CXX_WORKS; then
  # See AT_DATA_SOURCE_PROLOGUE.
  cat >conftest.cc <<EOF
#include <testsuite.h>
#include <iostream>

int main ()
{
  std::cout << "Works\n";
}
EOF
  $CXX $CXXFLAGS $CPPFLAGS $LDFLAGS $LIBS -o conftest conftest.cc
  case $? in
   0);;
   *) BISON_CXX_WORKS="as_fn_error 77 cannot-compile-simple-program";;
  esac
  rm -fr conftest*
fi

# Whether the compiler supports POSIXLY_CORRECT defined.
: ${C_COMPILER_POSIXLY_CORRECT='@C_COMPILER_POSIXLY_CORRECT@'}
: ${CXX_COMPILER_POSIXLY_CORRECT='@CXX_COMPILER_POSIXLY_CORRECT@'}

if $POSIXLY_CORRECT_IS_EXPORTED; then
  $C_COMPILER_POSIXLY_CORRECT || BISON_C_WORKS=false
  $CXX_COMPILER_POSIXLY_CORRECT || BISON_CXX_WORKS=false
fi

# Handle --compile-c-with-cxx here, once CXX and CXXFLAGS are known.
if "$at_arg_compile_c_with_cxx"; then
  CC_IS_CXX=1
  CC=$CXX
  NO_WERROR_CFLAGS=$NO_WERROR_CXXFLAGS
  CFLAGS="$CXXFLAGS $WNO_DEPRECATED_CXXFLAGS"
  BISON_C_WORKS=$BISON_CXX_WORKS
else
  CC_IS_CXX=0
fi


## ------- ##
## Other.  ##
## ------- ##

# Empty if no D compiler was found.
: ${DC='@DC@'}
: ${DCFLAGS='@DCFLAGS@'}
if test x"$DC" = x; then
  BISON_DC_WORKS=false
else
  BISON_DC_WORKS=true
fi

# Empty if no javac was found
: ${CONF_JAVAC='@CONF_JAVAC@'}

# Empty if no Java VM was found
: ${CONF_JAVA='@CONF_JAVA@'}

# We need egrep and perl.
: ${EGREP='@EGREP@'}
: ${PERL='@PERL@'}

# Use simple quotes (lib/quote.c).
# We have an LC_ALL=C pushed onto us via maint.mk.
LC_CTYPE=C
export LC_CTYPE

# Are special link options needed?
: ${LDFLAGS='@LDFLAGS@'}

# Are special libraries needed?
: ${LIBS="$abs_top_builddir/lib/libbison.a @LIBS@ @INTLLIBS@"}

# Empty if no xsltproc was found
: ${XSLTPROC='@XSLTPROC@'}


# Some tests expect a precise diff format.  See AT_DIFF_U_CHECK.
# See https://lists.gnu.org/r/bug-bison/2020-05/msg00049.html.
cat >conftest.1 <<EOF
1
2
3
4
5
6
EOF

cat >conftest.2 <<EOF
1
22
3
4
55
6
EOF

cat >conftest.expected <<EOF
@@ -1,6 +1,6 @@
 1
-2
+22
 3
 4
-5
+55
 6
EOF

diff -u conftest.1 conftest.2 2>/dev/null | sed -n '/^@@/,$p' | sed 's/^ $//' >conftest.diff
if diff conftest.expected conftest.diff >/dev/null; then
    DIFF_U_WORKS=true
else
    DIFF_U_WORKS=false
fi
rm conftest.*
