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Diffstat (limited to 'config/lf_warnings.m4')
| -rw-r--r-- | config/lf_warnings.m4 | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/config/lf_warnings.m4 b/config/lf_warnings.m4 new file mode 100644 index 0000000..4e2ca91 --- /dev/null +++ b/config/lf_warnings.m4 @@ -0,0 +1,128 @@ +dnl Copyright (C) 1988 Eleftherios Gkioulekas <lf@amath.washington.edu> +dnl +dnl This program is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 3 of the License, or +dnl (at your option) any later version. +dnl +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +dnl GNU General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program; if not, write to the Free Software +dnl Foundation, Inc., 51 Franklin Street, Boston, MA 02110-1301, USA. +dnl +dnl As a special exception to the GNU General Public License, if you +dnl distribute this file as part of a program that contains a configuration +dnl script generated by Autoconf, you may include it under the same +dnl distribution terms that you use for the rest of that program. + +# -------------------------------------------------------------------------- +# Check whether the C++ compiler accepts a certain flag +# If it does it adds the flag to CXXFLAGS +# If it does not then it returns an error to lf_ok +# Usage: +# LF_CHECK_CXX_FLAG(-flag1 -flag2 -flag3 ...) +# ------------------------------------------------------------------------- + +AC_DEFUN([LF_CHECK_CXX_FLAG],[ + echo 'void f(){}' > conftest.cc + for i in $1 + do + AC_MSG_CHECKING([whether $CXX accepts $i]) + if test -z "`${CXX} $i -c conftest.cc 2>&1`" + then + CXXFLAGS="${CXXFLAGS} $i" + AC_MSG_RESULT(yes) + else + AC_MSG_RESULT(no) + fi + done + rm -f conftest.cc conftest.o +]) + +# -------------------------------------------------------------------------- +# Check whether the C compiler accepts a certain flag +# If it does it adds the flag to CFLAGS +# If it does not then it returns an error to lf_ok +# Usage: +# LF_CHECK_CC_FLAG(-flag1 -flag2 -flag3 ...) +# ------------------------------------------------------------------------- + +AC_DEFUN([LF_CHECK_CC_FLAG],[ + echo 'void f(){}' > conftest.c + for i in $1 + do + AC_MSG_CHECKING([whether $CC accepts $i]) + if test -z "`${CC} $i -c conftest.c 2>&1`" + then + CFLAGS="${CFLAGS} $i" + AC_MSG_RESULT(yes) + else + AC_MSG_RESULT(no) + fi + done + rm -f conftest.c conftest.o +]) + +# -------------------------------------------------------------------------- +# Check whether the Fortran compiler accepts a certain flag +# If it does it adds the flag to FFLAGS +# If it does not then it returns an error to lf_ok +# Usage: +# LF_CHECK_F77_FLAG(-flag1 -flag2 -flag3 ...) +# ------------------------------------------------------------------------- + +AC_DEFUN([LF_CHECK_F77_FLAG],[ + cat << EOF > conftest.f +c....:++++++++++++++++++++++++ + PROGRAM MAIN + PRINT*,'Hello World!' + END +EOF + for i in $1 + do + AC_MSG_CHECKING([whether $F77 accepts $i]) + if test -z "`${F77} $i -c conftest.f 2>&1`" + then + FFLAGS="${FFLAGS} $i" + AC_MSG_RESULT(yes) + else + AC_MSG_RESULT(no) + fi + done + rm -f conftest.f conftest.o +]) + +# ---------------------------------------------------------------------- +# Provide the configure script with an --with-warnings option that +# turns on warnings. Call this command AFTER you have configured ALL your +# compilers. +# ---------------------------------------------------------------------- + +AC_DEFUN([LF_SET_WARNINGS],[ + dnl Check for --with-warnings + AC_MSG_CHECKING([whether user wants warnings]) + AC_ARG_WITH(warnings, + [ --with-warnings Turn on warnings], + [ lf_warnings=yes ], [ lf_warnings=no ]) + lf_warnings=yes # hard code for now -eb + AC_MSG_RESULT($lf_warnings) + + dnl Warnings for the two main compilers + cc_warning_flags="-Wall" + cxx_warning_flags="-Wall -Woverloaded-virtual" + if test $lf_warnings = yes + then + if test -n "${CC}" + then + LF_CHECK_CC_FLAG($cc_warning_flags) + fi + if test -n "${CXX}" + then + LF_CHECK_CXX_FLAG($cxx_warning_flags) + fi + fi +]) |