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llvm-6502/include/llvm/Config/config.h.in
Todd Fiala 9cd9208565 Fix configure to find arc4random via header files. 
ISSUE:

On Ubuntu 12.04 LTS, arc4random is provided by libbsd.so, which is a
transitive dependency of libedit. If a system had libedit on it that
was implemented in terms of libbsd.so, then the arc4random test,
previously implemented as a linker test, would succeed with -ledit.
However, on Ubuntu this would also require a #include <bsd/stdlib.h>.
This caused a build breakage on configure-based Ubuntu 12.04 with
libedit installed.

FIX:

This fix changes configure to test for arc4random by searching for it
in the standard header files. On Ubuntu 12.04, this test now properly
fails to find arc4random as it is not defined in the default header
locations. It also tweaks the #define names to match the output of the
header check command, which is slightly different than the linker
function check #defines.

I tested the following scenarios:

(1) Ubuntu 12.04 without the libedit package [did not find arc4random,
as expected]

(2) Ubuntu 12.04 with libedit package [properly did not find
arc4random, as expected]

(3) Ubuntu 12.04 with most recent libedit, custom built, and not
dependent on libbsd.so [properly did not find arc4random, as
expected].

(4) FreeBSD 10.0B1 [properly found arc4random, as expected]


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200819 91177308-0d34-0410-b5e6-96231b3b80d8
2014-02-05 05:04:36 +00:00

714 lines
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/* include/llvm/Config/config.h.in. Generated from autoconf/configure.ac by autoheader. */
#ifndef CONFIG_H
#define CONFIG_H
/* Bug report URL. */
#undef BUG_REPORT_URL
/* Define if we have libxml2 */
#undef CLANG_HAVE_LIBXML
/* Relative directory for resource files */
#undef CLANG_RESOURCE_DIR
/* Directories clang will search for headers */
#undef C_INCLUDE_DIRS
/* Default <path> to all compiler invocations for --sysroot=<path>. */
#undef DEFAULT_SYSROOT
/* Define if you want backtraces on crash */
#undef ENABLE_BACKTRACES
/* Define to enable crash handling overrides */
#undef ENABLE_CRASH_OVERRIDES
/* Define if position independent code is enabled */
#undef ENABLE_PIC
/* Define if timestamp information (e.g., __DATE__) is allowed */
#undef ENABLE_TIMESTAMPS
/* Directory where gcc is installed. */
#undef GCC_INSTALL_PREFIX
/* Define to 1 if you have the `argz_append' function. */
#undef HAVE_ARGZ_APPEND
/* Define to 1 if you have the `argz_create_sep' function. */
#undef HAVE_ARGZ_CREATE_SEP
/* Define to 1 if you have the <argz.h> header file. */
#undef HAVE_ARGZ_H
/* Define to 1 if you have the `argz_insert' function. */
#undef HAVE_ARGZ_INSERT
/* Define to 1 if you have the `argz_next' function. */
#undef HAVE_ARGZ_NEXT
/* Define to 1 if you have the `argz_stringify' function. */
#undef HAVE_ARGZ_STRINGIFY
/* Define to 1 if you have the `backtrace' function. */
#undef HAVE_BACKTRACE
/* Define to 1 if you have the `ceilf' function. */
#undef HAVE_CEILF
/* Define if the neat program is available */
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/* Define to 1 if you have the `closedir' function. */
#undef HAVE_CLOSEDIR
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/* can use __crashreporter_info__ */
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/* Define to 1 if you have the <cxxabi.h> header file. */
#undef HAVE_CXXABI_H
/* Define to 1 if you have the declaration of `arc4random', and to 0 if you
don't. */
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don't. */
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/* Define if the Graphviz program is available */
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/* Define to 1 if you have the `udis86' library (-ludis86). */
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/* Define if the neat program is available */
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/* Define to 1 if you have the `rintf' function. */
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/* Define to 1 if you have the `round' function. */
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/* Define to 1 if you have the <setjmp.h> header file. */
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/* Define to 1 if you have the `setrlimit' function. */
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/* Define if you have the shl_load function. */
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/* Define to 1 if you have the `siglongjmp' function. */
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*/
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*/
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/* Define to the one symbol short name of this package. */
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/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
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/* Type of 1st arg on ELM Callback */
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/* Define to empty if `const' does not conform to ANSI C. */
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/* Define to `unsigned int' if <sys/types.h> does not define. */
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#endif
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