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 #include #include /* 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="$CPPFLAGS -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_SOURCE -D_GNU_SOURCE" ;; *midipix*) HOST_OS=midipix CPPFLAGS="$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 #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="$CPPFLAGS" AC_SUBST([PLATFORM_LDADD], ['-lws2_32 -lbcrypt']) ;; *solaris*) HOST_OS=solaris HOST_ABI=elf CPPFLAGS="$CPPFLAGS -D__EXTENSIONS__ -D_XOPEN_SOURCE=600 -DBSD_COMP" AC_SUBST([PLATFORM_LDADD], ['-ldl -lnsl -lsocket']) ;; *) ;; esac 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_MIDIPIX], [test x$HOST_OS = xmidipix]) AM_CONDITIONAL([HOST_NETBSD], [test x$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]) ])