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|
#
# Contains macros to detect OS features.
#
# DRUNTIME_OS_THREAD_MODEL
# ------------------------
# Detect thread model and substitute DCFG_THREAD_MODEL
AC_DEFUN([DRUNTIME_OS_THREAD_MODEL],
[
AC_REQUIRE([AC_PROG_GDC])
AC_MSG_CHECKING([for thread model used by GDC])
d_thread_model=`$GDC -v 2>&1 | sed -n 's/^Thread model: //p'`
AC_MSG_RESULT([$d_thread_model])
# Map from thread model to thread interface.
DRUNTIME_CONFIGURE_THREADS([$d_thread_model])
])
# DRUNTIME_CONFIGURE_THREADS(thread_model)
# ----------------------------------------
# Map target os to D version identifier
AC_DEFUN([DRUNTIME_CONFIGURE_THREADS],
[
case $1 in
aix) DCFG_THREAD_MODEL="Posix" ;;
lynx) DCFG_THREAD_MODEL="Posix" ;;
posix) DCFG_THREAD_MODEL="Posix" ;;
single) DCFG_THREAD_MODEL="Single" ;;
win32) DCFG_THREAD_MODEL="Win32" ;;
# TODO: These targets need porting.
dce|mipssde|rtems|tpf|vxworks)
DCFG_THREAD_MODEL="Single" ;;
*) as_fn_error "Thread implementation '$1' not recognised" "$LINENO" 5 ;;
esac
AC_SUBST(DCFG_THREAD_MODEL)
])
# DRUNTIME_OS_DETECT
# ------------------
# Set the druntime_cv_target_os variable
AC_DEFUN([DRUNTIME_OS_DETECT],
[
AC_CACHE_CHECK([[for target OS]],
[[druntime_cv_target_os]],
[[druntime_cv_target_os=`echo $target_os | sed 's/^\([A-Za-z_]+\)/\1/'`]])
AS_IF([[test -z "$druntime_cv_target_os"]],
[AC_MSG_ERROR([[can't detect target OS]])],
[])
])
# DRUNTIME_OS_SOURCES
# -------------------
# Detect target OS and add DRUNTIME_OS_AIX DRUNTIME_OS_ANDROID
# DRUNTIME_OS_DARWIN DRUNTIME_OS_DRAGONFLYBSD DRUNTIME_OS_FREEBSD
# DRUNTIME_OS_LINUX DRUNTIME_OS_MINGW DRUNTIME_OS_NETBSD
# DRUNTIME_OS_OPENBSD DRUNTIME_OS_SOLARIS conditionals.
# If the system is posix, add DRUNTIME_OS_POSIX conditional.
AC_DEFUN([DRUNTIME_OS_SOURCES],
[
AC_REQUIRE([DRUNTIME_OS_DETECT])
druntime_target_os_parsed=""
case "$druntime_cv_target_os" in
aix*) druntime_target_os_parsed="aix"
;;
*android*)
druntime_target_os_parsed="android"
;;
darwin*) druntime_target_os_parsed="darwin"
;;
dragonfly*)
druntime_target_os_parsed="dragonflybsd"
;;
freebsd*|k*bsd*-gnu)
druntime_target_os_parsed="freebsd"
;;
openbsd*)
druntime_target_os_parsed="openbsd"
;;
netbsd*)
druntime_target_os_parsed="netbsd"
;;
linux*) druntime_target_os_parsed="linux"
;;
mingw*) druntime_target_os_parsed="mingw"
;;
*solaris*) druntime_target_os_parsed="solaris"
esac
AM_CONDITIONAL([DRUNTIME_OS_AIX],
[test "$druntime_target_os_parsed" = "aix"])
AM_CONDITIONAL([DRUNTIME_OS_ANDROID],
[test "$druntime_target_os_parsed" = "android"])
AM_CONDITIONAL([DRUNTIME_OS_DARWIN],
[test "$druntime_target_os_parsed" = "darwin"])
AM_CONDITIONAL([DRUNTIME_OS_DRAGONFLYBSD],
[test "$druntime_target_os_parsed" = "dragonflybsd"])
AM_CONDITIONAL([DRUNTIME_OS_FREEBSD],
[test "$druntime_target_os_parsed" = "freebsd"])
AM_CONDITIONAL([DRUNTIME_OS_NETBSD],
[test "$druntime_target_os_parsed" = "netbsd"])
AM_CONDITIONAL([DRUNTIME_OS_OPENBSD],
[test "$druntime_target_os_parsed" = "openbsd"])
AM_CONDITIONAL([DRUNTIME_OS_LINUX],
[test "$druntime_target_os_parsed" = "linux"])
AM_CONDITIONAL([DRUNTIME_OS_MINGW],
[test "$druntime_target_os_parsed" = "mingw"])
AM_CONDITIONAL([DRUNTIME_OS_SOLARIS],
[test "$druntime_target_os_parsed" = "solaris"])
druntime_target_posix="no"
case "$druntime_cv_target_os" in
aix*|*bsd*|cygwin*|darwin*|dragonfly*|gnu*|linux*|skyos*|*solaris*|sysv*)
druntime_target_posix="yes"
;;
esac
AM_CONDITIONAL([DRUNTIME_OS_POSIX], [test "$druntime_target_posix" = "yes"])
])
# DRUNTIME_OS_FEATURES
# -----------------------
# Perform various feature checks on the target platform.
AC_DEFUN([DRUNTIME_OS_FEATURES],
[
AC_REQUIRE([DRUNTIME_OS_DETECT])
OS_DFLAGS=
case "$druntime_cv_target_os" in
linux*) druntime_target_os_parsed="linux"
AC_MSG_CHECKING([for getrandom])
AC_LANG_PUSH([C])
AC_TRY_COMPILE([#include <sys/syscall.h>
#include <unistd.h>],[
syscall (__NR_getrandom);
],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])
OS_DFLAGS=-fversion=linux_legacy_emulate_getrandom])
AC_LANG_POP([C])
;;
esac
AC_SUBST(OS_DFLAGS)
])
# DRUNTIME_OS_ARM_EABI_UNWINDER
# ------------------------
# Check if using ARM unwinder and substitute DCFG_ARM_EABI_UNWINDER
# and set DRUNTIME_OS_ARM_EABI_UNWINDER conditional.
AC_DEFUN([DRUNTIME_OS_ARM_EABI_UNWINDER],
[
AC_LANG_PUSH([C])
AC_MSG_CHECKING([for ARM unwinder])
AC_TRY_COMPILE([#include <unwind.h>],[
#if __ARM_EABI_UNWINDER__
#error Yes, it is.
#endif
],
[AC_MSG_RESULT([no])
DCFG_ARM_EABI_UNWINDER=false],
[AC_MSG_RESULT([yes])
DCFG_ARM_EABI_UNWINDER=true])
AC_SUBST(DCFG_ARM_EABI_UNWINDER)
AM_CONDITIONAL([DRUNTIME_OS_ARM_EABI_UNWINDER], [test "$DCFG_ARM_EABI_UNWINDER" = "true"])
AC_LANG_POP([C])
])
# DRUNTIME_OS_MINFO_BRACKETING
# ----------------------------
# Check if the linker provides __start_minfo and __stop_minfo symbols and
# substitute DCFG_MINFO_BRACKETING.
AC_DEFUN([DRUNTIME_OS_MINFO_BRACKETING],
[
AC_REQUIRE([DRUNTIME_OS_DETECT])
AC_LANG_PUSH([C])
AC_MSG_CHECKING([for minfo section bracketing])
case "$druntime_cv_target_os" in
darwin*)
section="__DATA,__minfodata"
start="section\$start\$__DATA\$__minfodata"
stop="section\$end\$__DATA\$__minfodata"
;;
*)
section="minfo"
start="__start_minfo"
stop="__stop_minfo"
;;
esac
AC_LINK_IFELSE([AC_LANG_SOURCE([
void* module_info_ptr __attribute__((section ("$section")));
extern void* start_minfo __asm__("$start") __attribute__((visibility ("hidden")));
extern void* stop_minfo __asm__("$stop") __attribute__((visibility ("hidden")));
int main()
{
// Never run, just to prevent compiler from optimizing access
return (int)(&stop_minfo - &start_minfo);
}
])],
[AC_MSG_RESULT([yes])
DCFG_MINFO_BRACKETING=true],
[AC_MSG_RESULT([no])
DCFG_MINFO_BRACKETING=false])
AC_SUBST(DCFG_MINFO_BRACKETING)
AM_CONDITIONAL([DRUNTIME_OS_MINFO_BRACKETING], [test "$DCFG_MINFO_BRACKETING" = "true"])
AC_LANG_POP([C])
])
# DRUNTIME_OS_DLPI_TLS_MODID
# ----------------------------
# Check if struct dl_phdr_info includes the dlpi_tls_modid member and
# substitute DCFG_DLPI_TLS_MODID.
AC_DEFUN([DRUNTIME_OS_DLPI_TLS_MODID],
[
AC_LANG_PUSH([C])
AC_CHECK_MEMBER([struct dl_phdr_info.dlpi_tls_modid],
[DCFG_DLPI_TLS_MODID=true], [DCFG_DLPI_TLS_MODID=false],
[[#include <link.h>]])
AC_SUBST(DCFG_DLPI_TLS_MODID)
AC_LANG_POP([C])
])
# DRUNTIME_OS_LINK_SPEC
# ---------------------
# Add target-specific link options to link_spec.
AC_DEFUN([DRUNTIME_OS_LINK_SPEC],
[
case $target in
i?86-*-solaris2.* | x86_64-*-solaris2.*)
# 64-bit Solaris/x86 ld breaks calls to __tls_get_addr with non-TLS
# relocs. Work around by disabling TLS transitions. Not necessary
# on 32-bit x86, but cannot be distinguished reliably in specs.
druntime_ld_prog=`$CC -print-prog-name=ld`
druntime_ld_gld=no
druntime_ld_relax_transtls=no
if test -n "$druntime_ld_prog" \
&& $druntime_ld_prog -v 2>&1 | grep GNU > /dev/null 2>&1; then
druntime_ld_gld=yes
else
echo 'int main (void) { return 0; }' > conftest.c
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,-z,relax=transtls"
if $CC $CFLAGS $LDFLAGS -o conftest conftest.c > /dev/null 2>&1; then
druntime_ld_relax_transtls=yes
fi
LDFLAGS="$save_LDFLAGS"
rm -f conftest.c conftest
fi
if test "$druntime_ld_relax_transtls" = "yes"; then
OS_LINK_SPEC='-z relax=transtls'
fi
;;
esac
AC_SUBST(OS_LINK_SPEC)
])
|
