kc3-lang/libressl/m4/check-os-options.m4

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• Hash : 30e91bc6
  Author :
  Date : 2019-07-14T18:37:59
  

  Enable speed on win32
  
  - Use thread and sleep instead of signal and alarm, on win32
  - Disable -multi option on win32 since fork is hard to implement
  

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• m4/check-os-options.m4

• AC_DEFUN([CHECK_OS_OPTIONS], [
  
  CFLAGS="$CFLAGS -Wall -std=gnu99 -fno-strict-aliasing"
  BUILD_NC=yes
  
  case $host_os in
  	*aix*)
  		HOST_OS=aix
  		if test "`echo $CC | cut -d ' ' -f 1`" != "gcc" ; then
  			CFLAGS="-qnoansialias $USER_CFLAGS"
  		fi
  		AC_SUBST([PLATFORM_LDADD], ['-lperfstat'])
  		;;
  	*cygwin*)
  		HOST_OS=cygwin
  		CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
  		;;
  	*darwin*)
  		HOST_OS=darwin
  		HOST_ABI=macosx
  		#
  		# Don't use arc4random on systems before 10.12 because of
  		# weak seed on failure to open /dev/random, based on latest
  		# public source:
  		# http://www.opensource.apple.com/source/Libc/Libc-997.90.3/gen/FreeBSD/arc4random.c
  		#
  		# We use the presence of getentropy() to detect 10.12. The
  		# following check take into account that:
   		#
  		#   - iOS <= 10.1 fails because of missing getentropy and
  		#     hence they miss sys/random.h
  		#
  		#   - in macOS 10.12 getentropy is not tagged as introduced in
  		#     10.12 so we cannot use it for target < 10.12
  		#
  		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  #include <AvailabilityMacros.h>
  #include <unistd.h>
  #include <sys/random.h>  /* Systems without getentropy() should die here */
  
  /* Based on: https://gitweb.torproject.org/tor.git/commit/?id=16fcbd21 */
  #ifndef MAC_OS_X_VERSION_10_12
  #  define MAC_OS_X_VERSION_10_12 101200
  #endif
  #if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  #  if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
  #    error "Running on Mac OSX 10.11 or earlier"
  #  endif
  #endif
                         ]], [[
  char buf[1]; getentropy(buf, 1);
  					   ]])],
                         [ USE_BUILTIN_ARC4RANDOM=no ],
                         [ USE_BUILTIN_ARC4RANDOM=yes ]
  		)
  		AC_MSG_CHECKING([whether to use builtin arc4random])
  		AC_MSG_RESULT([$USE_BUILTIN_ARC4RANDOM])
  		# Not available on iOS
  		AC_CHECK_HEADER([arpa/telnet.h], [], [BUILD_NC=no])
  		;;
  	*freebsd*)
  		HOST_OS=freebsd
  		HOST_ABI=elf
  		# fork detection missing, weak seed on failure
  		# https://svnweb.freebsd.org/base/head/lib/libc/gen/arc4random.c?revision=268642&view=markup
  		USE_BUILTIN_ARC4RANDOM=yes
  		AC_SUBST([PROG_LDADD], ['-lthr'])
  		;;
  	*hpux*)
  		HOST_OS=hpux;
  		if test "`echo $CC | cut -d ' ' -f 1`" = "gcc" ; then
  			CFLAGS="$CFLAGS -mlp64"
  		else
  			CFLAGS="-g -O2 +DD64 +Otype_safety=off $USER_CFLAGS"
  		fi
  		CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=600 -D__STRICT_ALIGNMENT"
  		;;
  	*linux*)
  		HOST_OS=linux
  		HOST_ABI=elf
  		CPPFLAGS="$CPPFLAGS -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_SOURCE -D_GNU_SOURCE"
  		;;
  	*netbsd*)
  		HOST_OS=netbsd
  		HOST_ABI=elf
  		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  #include <sys/param.h>
  #if __NetBSD_Version__ < 700000001
          undefined
  #endif
                         ]], [[]])],
                         [ USE_BUILTIN_ARC4RANDOM=no ],
                         [ USE_BUILTIN_ARC4RANDOM=yes ]
  		)
  		CPPFLAGS="$CPPFLAGS -D_OPENBSD_SOURCE"
  		;;
  	*openbsd* | *bitrig*)
  		HOST_OS=openbsd
  		HOST_ABI=elf
  		AC_DEFINE([HAVE_ATTRIBUTE__BOUNDED__], [1], [OpenBSD gcc has bounded])
  		AC_DEFINE([HAVE_ATTRIBUTE__DEAD], [1], [OpenBSD gcc has __dead])
  		;;
  	*mingw*)
  		HOST_OS=win
  		HOST_ABI=mingw64
  		BUILD_NC=no
  		CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE -D_POSIX -D_POSIX_SOURCE -D__USE_MINGW_ANSI_STDIO"
  		CPPFLAGS="$CPPFLAGS -D_REENTRANT -D_POSIX_THREAD_SAFE_FUNCTIONS"
  		CPPFLAGS="$CPPFLAGS -DWIN32_LEAN_AND_MEAN -D_WIN32_WINNT=0x0600"
  		CPPFLAGS="$CPPFLAGS"
  		AC_SUBST([PLATFORM_LDADD], ['-lws2_32'])
  		;;
  	*solaris*)
  		HOST_OS=solaris
  		HOST_ABI=elf
  		CPPFLAGS="$CPPFLAGS -D__EXTENSIONS__ -D_XOPEN_SOURCE=600 -DBSD_COMP"
  		AC_SUBST([PLATFORM_LDADD], ['-ldl -lnsl -lsocket'])
  		;;
  	*) ;;
  esac
  
  AC_ARG_ENABLE([nc],
  	AS_HELP_STRING([--enable-nc], [Enable installing TLS-enabled nc(1)]))
  AM_CONDITIONAL([ENABLE_NC], [test "x$enable_nc" = xyes])
  AM_CONDITIONAL([BUILD_NC],  [test x$BUILD_NC = xyes -o "x$enable_nc" = xyes])
  
  AM_CONDITIONAL([HOST_AIX],     [test x$HOST_OS = xaix])
  AM_CONDITIONAL([HOST_CYGWIN],  [test x$HOST_OS = xcygwin])
  AM_CONDITIONAL([HOST_DARWIN],  [test x$HOST_OS = xdarwin])
  AM_CONDITIONAL([HOST_FREEBSD], [test x$HOST_OS = xfreebsd])
  AM_CONDITIONAL([HOST_HPUX],    [test x$HOST_OS = xhpux])
  AM_CONDITIONAL([HOST_LINUX],   [test x$HOST_OS = xlinux])
  AM_CONDITIONAL([HOST_NETBSD],  [test x$HOST_OS = xnetbsd])
  AM_CONDITIONAL([HOST_OPENBSD], [test x$HOST_OS = xopenbsd])
  AM_CONDITIONAL([HOST_SOLARIS], [test x$HOST_OS = xsolaris])
  AM_CONDITIONAL([HOST_WIN],     [test x$HOST_OS = xwin])
  ])
  

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