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Diffstat (limited to 'sysdeps/generic/gcc-compat.h')
| -rw-r--r-- | sysdeps/generic/gcc-compat.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/sysdeps/generic/gcc-compat.h b/sysdeps/generic/gcc-compat.h new file mode 100644 index 0000000000..ac4fa1e95b --- /dev/null +++ b/sysdeps/generic/gcc-compat.h @@ -0,0 +1,42 @@ +/* Macros for checking required GCC compatibility. Generic version. + Copyright (C) 2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +/* This is the base file. More-specific sysdeps/.../gcc-compat.h files + can define GCC_COMPAT_VERSION and then #include_next this file. */ + +#ifndef _GENERIC_GCC_COMPAT_H +#define _GENERIC_GCC_COMPAT_H 1 + +/* This is the macro that gets used in #if tests in code: true iff + the library we build must be compatible with user code built by + GCC version MAJOR.MINOR. */ +#define GCC_COMPAT(major, minor) \ + (GCC_COMPAT_VERSION <= GCC_VERSION (major, minor)) + +/* This is how we compose an integer from major and minor version + numbers, for comparison. */ +#define GCC_VERSION(major, minor) \ + (((major) << 16) + (minor)) + +#ifndef GCC_COMPAT_VERSION +/* GCC 2.7.2 was current at the time of the glibc-2.0 release. + We assume nothing before that ever mattered. */ +# define GCC_COMPAT_VERSION GCC_VERSION (2, 7) +#endif + +#endif |