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mdbx: ban the compilers older than GCC 4.2 or incompatible with it.

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Change-Id: I30cfc04b086116652b3c40d76e1def8428b0dcd7
This commit is contained in:
Leo Yuriev 2016-06-06 01:40:41 +03:00
parent ba943fcff2
commit 4cbbb64e21
2 changed files with 15 additions and 5 deletions
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1
Makefile
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@ -1,4 +1,5 @@
# GNU Makefile for libmdbx (reliable lightning memory-mapped DB library for Linux). # GNU Makefile for libmdbx (reliable lightning memory-mapped DB library for Linux).
# https://github.com/ReOpen/libmdbx
######################################################################## ########################################################################
# Configuration. The compiler options must enable threaded compilation. # Configuration. The compiler options must enable threaded compilation.

19
reopen.h
View File

@ -21,7 +21,16 @@
/* LY: Please do not ask us for Windows support, just never! /* LY: Please do not ask us for Windows support, just never!
* But you can make a fork for Windows, or become maintainer for FreeBSD... */ * But you can make a fork for Windows, or become maintainer for FreeBSD... */
#ifndef __gnu_linux__ #ifndef __gnu_linux__
# error "ReOpenLDAP branch supports only GNU Linux" # error "MDBX supports only GNU Linux"
#endif
#if !defined(__GNUC__) || __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
/* LY: Actualy MDBX was not tested with compilers
* older than GCC 4.4 from RHEL6, and clang 3.6 from Ubuntu.
* But you could remove this #error and try to continue at your own risk.
* In such case please don't rise up an issues related ONLY to old compilers.
*/
# error "MDBX required at least GCC 4.2 compatible C/C++ compiler."
#endif #endif
#ifndef _REOPEN_H #ifndef _REOPEN_H
@ -31,14 +40,14 @@
# define _GNU_SOURCE # define _GNU_SOURCE
#endif #endif
#if !defined(GCC_VERSION) && defined(__GNUC__)
# define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#endif /* GCC_VERSION */
#ifndef __has_attribute #ifndef __has_attribute
# define __has_attribute(x) (0) # define __has_attribute(x) (0)
#endif #endif
#if !defined(GCC_VERSION) && defined(__GNUC__)
# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
#endif /* GCC_VERSION */
#if !defined(__thread) && (defined(_MSC_VER) || defined(__DMC__)) #if !defined(__thread) && (defined(_MSC_VER) || defined(__DMC__))
# define __thread __declspec(thread) # define __thread __declspec(thread)
#endif #endif