/usr/share/dune/aclocal/dune_compiler.m4 is in libdune-common-dev 2.4.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | # check for supported compilers
AC_DEFUN([DUNE_CHECK_COMPILER],[
AC_ARG_ENABLE(compilercheck,
AS_HELP_STRING([--disable-compilercheck],
[disable check for supported compilers]),
[compilercheck=$enableval], [compilercheck=yes])
SUPPORTED_COMPILER="gcc (>= 4.4), should work with recent versions of icc (>= 13) and clang (>= 3.2)"
AC_REQUIRE([AC_PROG_CXX])
cat >conftest.cc <<_ACEOF
#include <cstdio>
#if defined __ICC && ! defined CXX_SUPPORTED
#if __ICC >= 1300
#define CXX_SUPPORTED "icc %2.2f", 1.0*__ICC/100
#endif
#endif
#if defined __clang__ && ! defined CXX_SUPPORTED
#if __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 2)
#define CXX_SUPPORTED \
"clang %i.%i.%i", __clang_major__, __clang_minor__, __clang_patchlevel__
#endif
#endif
#if defined __GNUC__ && ! defined CXX_SUPPORTED
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
#define CXX_SUPPORTED \
"gcc %i.%i.%i", __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__
#endif
#endif
#ifndef CXX_SUPPORTED
#error Your compiler is not officially supported by dune
#endif
int main() {
printf(CXX_SUPPORTED);
return 0;
}
_ACEOF
AS_IF([test "x$compilercheck" = "xno"],
[AC_MSG_WARN([compilercheck is disabled. DANGEROUS!])],
[ AC_MSG_CHECKING([whether compiler is officially supported by DUNE])
AS_IF([$CXX conftest.cc -o conftest.$ac_exeext >&5],
[ AC_MSG_RESULT([yes])
COMPILER_NAME=`./conftest.$ac_exeext`;
rm -f conftest.$ac_exeext],
[ AC_MSG_RESULT([no])
AC_MSG_ERROR([Your compiler is not officially supported by dune
dune is known to work with $SUPPORTED_COMPILER])
])
])
AS_IF([test -z "$COMPILER_NAME"],[
COMPILER_NAME="unknown compiler"])
])
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