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boinc/m4/sah_largefile_breaks_cxx.m4

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-Unfortunately on some 32 bit systems there is a problem with wx-widgets configuring itself for largefile support. On these systems largefile support breaks C++ compiles by defining away many of the C standard library routines that should reside in namespace std::. In order to get around problem first we have to check the largefile support macros. Later we will use the macro SAH_LARGEFILE_BREAKS_CXX to check for the breakage. If if breakage is found LARGEFILE_BREAKS_CXX is defined in config.h. This define is checked in std_fixes.h and the appropriate functions are defined in order to solve the problem. (These functions were already in place) Because these defines affect the behavior of standard library headers, std_fixes.h is being included from config.h -Added AM_CPPFLAGS, AM_CFLAGS, and AM_CXXFLAGS (for flags common to all compiles) so they will be defined in all Makefile.am files. -Put #ifdef _cplusplus around the C++ specific items in std_fixes.h so it may be included from C source files. svn path=/trunk/boinc/; revision=5375
2005-02-09 19:39:04 +00:00
# SETI_BOINC is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 2, or (at your option) any later
# version.
AC_DEFUN([SAH_LARGEFILE_BREAKS_CXX],[
AC_MSG_CHECKING([whether largefile support breaks C++])
AC_LANG_PUSH(C++)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[
#define CONFIG_TEST
#include <iostream>
]],
[[
std::cout << 1.0 << std::endl;
]])],
[tmp_res="no"],
[AC_DEFINE([LARGEFILE_BREAKS_CXX],[1],
["Define to 1 if largefile support causes missing symbols in C++"] )
tmp_res="yes"
- First fixes for out-of-source-tree configure and compile - samples/example_app will no longer build by default. To build person compile must run make in the example_app directory in-source-tree. Thats because the Makefile is not and should not be generated by automake.
2012-11-02 00:58:57 +00:00
sah_cxx_includes=`echo "#include \"${ac_aux_dir}/lib/std_fixes.h\"" ; echo $sah_cxx_includes`
-Unfortunately on some 32 bit systems there is a problem with wx-widgets configuring itself for largefile support. On these systems largefile support breaks C++ compiles by defining away many of the C standard library routines that should reside in namespace std::. In order to get around problem first we have to check the largefile support macros. Later we will use the macro SAH_LARGEFILE_BREAKS_CXX to check for the breakage. If if breakage is found LARGEFILE_BREAKS_CXX is defined in config.h. This define is checked in std_fixes.h and the appropriate functions are defined in order to solve the problem. (These functions were already in place) Because these defines affect the behavior of standard library headers, std_fixes.h is being included from config.h -Added AM_CPPFLAGS, AM_CFLAGS, and AM_CXXFLAGS (for flags common to all compiles) so they will be defined in all Makefile.am files. -Put #ifdef _cplusplus around the C++ specific items in std_fixes.h so it may be included from C source files. svn path=/trunk/boinc/; revision=5375
2005-02-09 19:39:04 +00:00
]
)
AC_MSG_RESULT($tmp_res)
AC_LANG_POP
])