diff options
Diffstat (limited to 'm4/check-os-options.m4')
| -rw-r--r-- | m4/check-os-options.m4 | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/m4/check-os-options.m4 b/m4/check-os-options.m4 new file mode 100644 index 0000000..8241aee --- /dev/null +++ b/m4/check-os-options.m4 @@ -0,0 +1,142 @@ +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="$CPPFLAGS -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_SOURCE -D_GNU_SOURCE" + ;; + *midipix*) + HOST_OS=midipix + CPPFLAGS="$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 <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$HOST_OS = xlinux]) +AM_CONDITIONAL([HOST_MIDIPIX], [test x$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]) +]) |