1# 2# Contains macros to detect OS features. 3# 4 5 6# DRUNTIME_OS_THREAD_MODEL 7# ------------------------ 8# Detect thread model and substitute DCFG_THREAD_MODEL 9AC_DEFUN([DRUNTIME_OS_THREAD_MODEL], 10[ 11 AC_REQUIRE([AC_PROG_GDC]) 12 AC_MSG_CHECKING([for thread model used by GDC]) 13 d_thread_model=`$GDC -v 2>&1 | sed -n 's/^Thread model: //p'` 14 AC_MSG_RESULT([$d_thread_model]) 15 16 # Map from thread model to thread interface. 17 DRUNTIME_CONFIGURE_THREADS([$d_thread_model]) 18]) 19 20 21# DRUNTIME_CONFIGURE_THREADS(thread_model) 22# ---------------------------------------- 23# Map target os to D version identifier 24AC_DEFUN([DRUNTIME_CONFIGURE_THREADS], 25[ 26case $1 in 27 aix) DCFG_THREAD_MODEL="Posix" ;; 28 lynx) DCFG_THREAD_MODEL="Posix" ;; 29 posix) DCFG_THREAD_MODEL="Posix" ;; 30 single) DCFG_THREAD_MODEL="Single" ;; 31 win32) DCFG_THREAD_MODEL="Win32" ;; 32 # TODO: These targets need porting. 33 dce|mipssde|rtems|tpf|vxworks) 34 DCFG_THREAD_MODEL="Single" ;; 35 *) as_fn_error "Thread implementation '$1' not recognised" "$LINENO" 5 ;; 36esac 37AC_SUBST(DCFG_THREAD_MODEL) 38]) 39 40 41# DRUNTIME_OS_DETECT 42# ------------------ 43# Set the druntime_cv_target_os variable 44AC_DEFUN([DRUNTIME_OS_DETECT], 45[ 46 AC_CACHE_CHECK([[for target OS]], 47 [[druntime_cv_target_os]], 48 [[druntime_cv_target_os=`echo $target_os | sed 's/^\([A-Za-z_]+\)/\1/'`]]) 49 AS_IF([[test -z "$druntime_cv_target_os"]], 50 [AC_MSG_ERROR([[can't detect target OS]])], 51 []) 52]) 53 54 55# DRUNTIME_OS_SOURCES 56# ------------------- 57# Detect target OS and add DRUNTIME_OS_AIX DRUNTIME_OS_DARWIN 58# DRUNTIME_OS_FREEBSD DRUNTIME_OS_LINUX DRUNTIME_OS_MINGW 59# DRUNTIME_OS_SOLARIS DRUNTIME_OS_OPENBSD conditionals. 60# If the system is posix, add DRUNTIME_OS_POSIX conditional. 61AC_DEFUN([DRUNTIME_OS_SOURCES], 62[ 63 AC_REQUIRE([DRUNTIME_OS_DETECT]) 64 65 druntime_target_os_parsed="" 66 case "$druntime_cv_target_os" in 67 aix*) druntime_target_os_parsed="aix" 68 ;; 69 *android*) 70 druntime_target_os_parsed="android" 71 ;; 72 darwin*) druntime_target_os_parsed="darwin" 73 ;; 74 dragonfly*) 75 druntime_target_os_parsed="dragonflybsd" 76 ;; 77 freebsd*|k*bsd*-gnu) 78 druntime_target_os_parsed="freebsd" 79 ;; 80 openbsd*) 81 druntime_target_os_parsed="openbsd" 82 ;; 83 netbsd*) 84 druntime_target_os_parsed="netbsd" 85 ;; 86 linux*) druntime_target_os_parsed="linux" 87 ;; 88 mingw*) druntime_target_os_parsed="mingw" 89 ;; 90 *solaris*) druntime_target_os_parsed="solaris" 91 esac 92 AM_CONDITIONAL([DRUNTIME_OS_AIX], 93 [test "$druntime_target_os_parsed" = "aix"]) 94 AM_CONDITIONAL([DRUNTIME_OS_ANDROID], 95 [test "$druntime_target_os_parsed" = "android"]) 96 AM_CONDITIONAL([DRUNTIME_OS_DARWIN], 97 [test "$druntime_target_os_parsed" = "darwin"]) 98 AM_CONDITIONAL([DRUNTIME_OS_DRAGONFLYBSD], 99 [test "$druntime_target_os_parsed" = "dragonflybsd"]) 100 AM_CONDITIONAL([DRUNTIME_OS_FREEBSD], 101 [test "$druntime_target_os_parsed" = "freebsd"]) 102 AM_CONDITIONAL([DRUNTIME_OS_NETBSD], 103 [test "$druntime_target_os_parsed" = "netbsd"]) 104 AM_CONDITIONAL([DRUNTIME_OS_OPENBSD], 105 [test "$druntime_target_os_parsed" = "openbsd"]) 106 AM_CONDITIONAL([DRUNTIME_OS_LINUX], 107 [test "$druntime_target_os_parsed" = "linux"]) 108 AM_CONDITIONAL([DRUNTIME_OS_MINGW], 109 [test "$druntime_target_os_parsed" = "mingw"]) 110 AM_CONDITIONAL([DRUNTIME_OS_SOLARIS], 111 [test "$druntime_target_os_parsed" = "solaris"]) 112 113 druntime_target_posix="no" 114 case "$druntime_cv_target_os" in 115 aix*|*bsd*|cygwin*|darwin*|gnu*|linux*|skyos*|*solaris*|sysv*) 116 druntime_target_posix="yes" 117 ;; 118 esac 119 AM_CONDITIONAL([DRUNTIME_OS_POSIX], [test "$druntime_target_posix" = "yes"]) 120]) 121 122 123# DRUNTIME_OS_ARM_EABI_UNWINDER 124# ------------------------ 125# Check if using ARM unwinder and substitute DCFG_ARM_EABI_UNWINDER 126# and set DRUNTIME_OS_ARM_EABI_UNWINDER conditional. 127AC_DEFUN([DRUNTIME_OS_ARM_EABI_UNWINDER], 128[ 129 AC_LANG_PUSH([C]) 130 AC_MSG_CHECKING([for ARM unwinder]) 131 AC_TRY_COMPILE([#include <unwind.h>],[ 132 #if __ARM_EABI_UNWINDER__ 133 #error Yes, it is. 134 #endif 135 ], 136 [AC_MSG_RESULT([no]) 137 DCFG_ARM_EABI_UNWINDER=false], 138 [AC_MSG_RESULT([yes]) 139 DCFG_ARM_EABI_UNWINDER=true]) 140 AC_SUBST(DCFG_ARM_EABI_UNWINDER) 141 AM_CONDITIONAL([DRUNTIME_OS_ARM_EABI_UNWINDER], [test "$DCFG_ARM_EABI_UNWINDER" = "true"]) 142 AC_LANG_POP([C]) 143]) 144 145 146# DRUNTIME_OS_MINFO_BRACKETING 147# ---------------------------- 148# Check if the linker provides __start_minfo and __stop_minfo symbols and 149# substitute DCFG_MINFO_BRACKETING. 150AC_DEFUN([DRUNTIME_OS_MINFO_BRACKETING], 151[ 152 AC_LANG_PUSH([C]) 153 AC_MSG_CHECKING([for minfo section bracketing]) 154 AC_LINK_IFELSE([AC_LANG_SOURCE([ 155 void* module_info_ptr __attribute__((section ("minfo"))); 156 extern void* __start_minfo __attribute__((visibility ("hidden"))); 157 extern void* __stop_minfo __attribute__((visibility ("hidden"))); 158 159 int main() 160 { 161 // Never run, just to prevent compiler from optimizing access 162 return &__start_minfo == &__stop_minfo; 163 } 164 ])], 165 [AC_MSG_RESULT([yes]) 166 DCFG_MINFO_BRACKETING=true], 167 [AC_MSG_RESULT([no]) 168 DCFG_MINFO_BRACKETING=false]) 169 AC_SUBST(DCFG_MINFO_BRACKETING) 170 AM_CONDITIONAL([DRUNTIME_OS_MINFO_BRACKETING], [test "$DCFG_MINFO_BRACKETING" = "true"]) 171 AC_LANG_POP([C]) 172]) 173 174# DRUNTIME_OS_DLPI_TLS_MODID 175# ---------------------------- 176# Check if struct dl_phdr_info includes the dlpi_tls_modid member and 177# substitute DCFG_DLPI_TLS_MODID. 178AC_DEFUN([DRUNTIME_OS_DLPI_TLS_MODID], 179[ 180 AC_LANG_PUSH([C]) 181 AC_CHECK_MEMBER([struct dl_phdr_info.dlpi_tls_modid], 182 [DCFG_DLPI_TLS_MODID=true], [DCFG_DLPI_TLS_MODID=false], 183 [[#include <link.h>]]) 184 AC_SUBST(DCFG_DLPI_TLS_MODID) 185 AC_LANG_POP([C]) 186]) 187 188# DRUNTIME_OS_LINK_SPEC 189# --------------------- 190# Add target-specific link options to link_spec. 191AC_DEFUN([DRUNTIME_OS_LINK_SPEC], 192[ 193 case $target in 194 i?86-*-solaris2.* | x86_64-*-solaris2.*) 195 # 64-bit Solaris/x86 ld breaks calls to __tls_get_addr with non-TLS 196 # relocs. Work around by disabling TLS transitions. Not necessary 197 # on 32-bit x86, but cannot be distinguished reliably in specs. 198 druntime_ld_prog=`$CC -print-prog-name=ld` 199 druntime_ld_gld=no 200 druntime_ld_relax_transtls=no 201 if test -n "$druntime_ld_prog" \ 202 && $druntime_ld_prog -v 2>&1 | grep GNU > /dev/null 2>&1; then 203 druntime_ld_gld=yes 204 else 205 echo 'int main (void) { return 0; }' > conftest.c 206 save_LDFLAGS="$LDFLAGS" 207 LDFLAGS="$LDFLAGS -Wl,-z,relax=transtls" 208 if $CC $CFLAGS $LDFLAGS -o conftest conftest.c > /dev/null 2>&1; then 209 druntime_ld_relax_transtls=yes 210 fi 211 LDFLAGS="$save_LDFLAGS" 212 rm -f conftest.c conftest 213 fi 214 if test "$druntime_ld_relax_transtls" = "yes"; then 215 OS_LINK_SPEC='-z relax=transtls' 216 fi 217 ;; 218 esac 219 AC_SUBST(OS_LINK_SPEC) 220]) 221