mirror of
https://git.savannah.gnu.org/git/bison.git
synced 2026-03-09 20:33:03 +00:00
7c64b1f4ff
In C++ pre C++11 it is standard practice to use 0 for the null pointer. But GCC pre 8 -std=c++98 with -Wzero-as-null-pointer-constant warns about this. So disable -Wzero-as-null-pointer-constant when compiling C++ pre 11. Let's do this in AT_DATA_SOURCE_PROLOGUE (which is pasted on top of all the test grammar files). Unfortunately, that shifts all the locations in the expected error messages, which would be too noisy. Instead, let's introduce testsuite.h, which can vary in length, and include it in AT_DATA_SOURCE_PROLOGUE. * tests/testsuite.h: New. Disable -Wzero-as-null-pointer-constant's warning with GCC pre 8, C++ pre 11. * tests/local.at (AT_DATA_SOURCE_PROLOGUE): Use it. * tests/atlocal.in (CPPFLAGS): Find it. * tests/local.mk: Ship it. * data/c.m4 (YY_NULLPTR): Prefer ((void*)0) to 0 in C.
152 lines
4.5 KiB
Bash
152 lines
4.5 KiB
Bash
# @configure_input@ -*- shell-script -*-
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# Configurable variable values for Bison test suite.
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# Copyright (C) 2000-2015, 2018 Free Software Foundation, Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# We need 'testsuite.h', (srcdir/test), 'config.h' (builddir/lib), and
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# the gnulib headers (srcdir/lib).
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CPPFLAGS="-I$abs_top_srcdir/tests -I$abs_top_srcdir/lib -I$abs_top_builddir/lib @CPPFLAGS@"
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# Don't just check if $POSIXLY_CORRECT is set, as Bash, when launched
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# as /bin/sh, sets the shell variable POSIXLY_CORRECT to y, but not
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# the environment variable.
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if env | grep '^POSIXLY_CORRECT=' >/dev/null; then
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POSIXLY_CORRECT_IS_EXPORTED=true
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else
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POSIXLY_CORRECT_IS_EXPORTED=false
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fi
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## ------------------- ##
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## C/C++ Compilation. ##
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## ------------------- ##
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: ${CC='@CC@'}
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: ${CXX='@CXX@'}
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# Is the compiler GCC?
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: ${GCC='@GCC@'}
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# Sometimes a test group needs to ignore gcc warnings, so it locally
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# sets CFLAGS to this.
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: ${NO_WERROR_CFLAGS='@CFLAGS@ @WARN_CFLAGS@ @WARN_CFLAGS_TEST@'}
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: ${NO_WERROR_CXXFLAGS='@CXXFLAGS@ @WARN_CXXFLAGS@ @WARN_CXXFLAGS_TEST@'}
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: ${WNO_DEPRECATED_CXXFLAGS='@WNO_DEPRECATED_CXXFLAGS@'}
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# But most of the time, we want -Werror.
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: ${CFLAGS="$NO_WERROR_CFLAGS @WERROR_CFLAGS@"}
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: ${CXXFLAGS="$NO_WERROR_CXXFLAGS @WERROR_CXXFLAGS@"}
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# If 'exit 77'; skip all C++ tests; otherwise ':'.
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: ${BISON_CXX_WORKS='@BISON_CXX_WORKS@'}
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# Compiler flags to disable exception support.
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: ${NO_EXCEPTIONS_CXXFLAGS='@NO_EXCEPTIONS_CXXFLAGS@'}
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# Requiring a specific C++ standard.
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: ${CXX98_CXXFLAGS='@CXX98_CXXFLAGS@'}
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: ${CXX11_CXXFLAGS='@CXX11_CXXFLAGS@'}
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: ${STDCXX_FLAGS='@STDCXX_FLAGS@'}
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# Be sure that the C++ compiler is not broken because of gnulib. This
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# cannot be checked in configure (gnulib is not parameterized yet),
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# and checking this in every C++ test in AC_COMPILE_CXX is too costly.
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#
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# http://lists.gnu.org/archive/html/bug-bison/2013-06/msg00001.html
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#
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# FIXME: Check (say 2014) whether this is still needed.
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if $BISON_CXX_WORKS; then
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# See AT_DATA_SOURCE_PROLOGUE.
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cat >conftest.cc <<EOF
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#include <config.h>
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/* We don't need perfect functions for these tests. */
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#undef malloc
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#undef memcmp
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#undef realloc
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#include <iostream>
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int main ()
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{
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std::cout << "Works\n";
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}
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EOF
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$CXX $CXXFLAGS $CPPFLAGS $LDFLAGS $LIBS -o conftest conftest.cc
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case $? in
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0);;
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*) BISON_CXX_WORKS="as_fn_error 77 cannot-compile-simple-program";;
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esac
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rm -fr conftest*
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fi
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# Whether the compiler supports POSIXLY_CORRECT defined.
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: ${C_COMPILER_POSIXLY_CORRECT='@C_COMPILER_POSIXLY_CORRECT@'}
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: ${CXX_COMPILER_POSIXLY_CORRECT='@CXX_COMPILER_POSIXLY_CORRECT@'}
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if $POSIXLY_CORRECT_IS_EXPORTED; then
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$C_COMPILER_POSIXLY_CORRECT ||
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BISON_C_WORKS="as_fn_error 77 POSIXLY_CORRECT"
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$CXX_COMPILER_POSIXLY_CORRECT ||
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BISON_CXX_WORKS="as_fn_error 77 POSIXLY_CORRECT"
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fi
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# Handle --compile-c-with-cxx here, once CXX and CXXFLAGS are known.
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if "$at_arg_compile_c_with_cxx"; then
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CC_IS_CXX=1
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CC=$CXX
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NO_WERROR_CFLAGS=$NO_WERROR_CXXFLAGS
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CFLAGS="$CXXFLAGS $WNO_DEPRECATED_CXXFLAGS"
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BISON_C_WORKS=$BISON_CXX_WORKS
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else
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CC_IS_CXX=0
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fi
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## ------- ##
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## Other. ##
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## ------- ##
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# Empty if no javac was found
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: ${CONF_JAVAC='@CONF_JAVAC@'}
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# Empty if no Java VM was found
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: ${CONF_JAVA='@CONF_JAVA@'}
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# We need egrep and perl.
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: ${EGREP='@EGREP@'}
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: ${PERL='@PERL@'}
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# Use simple quotes (lib/quote.c).
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LC_CTYPE=C
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export LC_CTYPE
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# Are special link options needed?
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: ${LDFLAGS='@LDFLAGS@'}
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# Are special libraries needed?
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: ${LIBS="$abs_top_builddir/lib/libbison.a @LIBS@ @INTLLIBS@"}
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# Empty if no xsltproc was found
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: ${XSLTPROC='@XSLTPROC@'}
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# Don't just check if $POSIXLY_CORRECT is set, as Bash, when launched
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# as /bin/sh, sets the shell variable POSIXLY_CORRECT to y, but not
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# the environment variable.
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: ${C_COMPILER_POSIXLY_CORRECT='@C_COMPILER_POSIXLY_CORRECT@'}
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if env | grep '^POSIXLY_CORRECT=' >/dev/null; then
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POSIXLY_CORRECT_IS_EXPORTED=true
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else
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POSIXLY_CORRECT_IS_EXPORTED=false
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fi
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