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Merge topic 'ninja-rsp_file-calculation' 

097e26f4 ninja: use the minimum of all command line length limits (#14892)
This commit is contained in:
Brad King 2015-01-26 09:51:53 -05:00 committed by CMake Topic Stage
parent 1337576b24 097e26f490
commit dfdcc42c60
1 changed files with 22 additions and 7 deletions
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29
Source/cmNinjaNormalTargetGenerator.cxx
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@ -22,6 +22,7 @@
#include <assert.h>
#include <algorithm>
#include <limits>
#ifndef _WIN32
#include <unistd.h>
@ -366,15 +367,29 @@ cmNinjaNormalTargetGenerator
static int calculateCommandLineLengthLimit(int linkRuleLength)
{
static int const limits[] = {
#ifdef _WIN32
return 8000 - linkRuleLength;
#elif defined(__linux) || defined(__APPLE__) || defined(__HAIKU__)
// for instance ARG_MAX is 2096152 on Ubuntu or 262144 on Mac
return ((int)sysconf(_SC_ARG_MAX)) - linkRuleLength - 1000;
#else
(void)linkRuleLength;
return -1;
8000,
#endif
#if defined(__APPLE__) || defined(__HAIKU__) || defined(__linux)
// for instance ARG_MAX is 2096152 on Ubuntu or 262144 on Mac
((int)sysconf(_SC_ARG_MAX)) - 1000,
#endif
#if defined(__linux)
// #define MAX_ARG_STRLEN (PAGE_SIZE * 32) in Linux's binfmts.h
((int)sysconf(_SC_PAGESIZE) * 32) - 1000,
#endif
std::numeric_limits<int>::max()
};
size_t const arrSz = cmArraySize(limits);
int const sz = *std::min_element(limits, limits + arrSz);
if (sz == std::numeric_limits<int>::max())
{
return -1;
}
return sz - linkRuleLength;
}