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 9 AC_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 24 AC_DEFUN([DRUNTIME_CONFIGURE_THREADS], 25 [ 26 case $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 ;; 36 esac 37 AC_SUBST(DCFG_THREAD_MODEL) 38 ]) 39 40 41 # DRUNTIME_OS_DETECT 42 # ------------------ 43 # Set the druntime_cv_target_os variable 44 AC_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 "$druntime_cv_target_os"]], 50 [AC_MSG_ERROR([[can't detect target OS]])], 51 []) 52 ]) 53 54 55 # DRUNTIME_OS_SOURCES 56 # ------------------- 57 # Detect target OS and add DRUNTIME_OS_AIX DRUNTIME_OS_ANDROID 58 # DRUNTIME_OS_DARWIN DRUNTIME_OS_DRAGONFLYBSD DRUNTIME_OS_FREEBSD 59 # DRUNTIME_OS_LINUX DRUNTIME_OS_MINGW DRUNTIME_OS_NETBSD 60 # DRUNTIME_OS_OPENBSD DRUNTIME_OS_SOLARIS conditionals. 61 # If the system is posix, add DRUNTIME_OS_POSIX conditional. 62 AC_DEFUN([DRUNTIME_OS_SOURCES], 63 [ 64 AC_REQUIRE([DRUNTIME_OS_DETECT]) 65 66 druntime_target_os_parsed="" 67 case "$druntime_cv_target_os" in 68 aix*) druntime_target_os_parsed="aix" 69 ;; 70 *android*) 71 druntime_target_os_parsed="android" 72 ;; 73 darwin*) druntime_target_os_parsed="darwin" 74 ;; 75 dragonfly*) 76 druntime_target_os_parsed="dragonflybsd" 77 ;; 78 freebsd*|k*bsd*-gnu) 79 druntime_target_os_parsed="freebsd" 80 ;; 81 openbsd*) 82 druntime_target_os_parsed="openbsd" 83 ;; 84 netbsd*) 85 druntime_target_os_parsed="netbsd" 86 ;; 87 linux*) druntime_target_os_parsed="linux" 88 ;; 89 mingw*) druntime_target_os_parsed="mingw" 90 ;; 91 *solaris*) druntime_target_os_parsed="solaris" 92 esac 93 AM_CONDITIONAL([DRUNTIME_OS_AIX], 94 [test "$druntime_target_os_parsed" = "aix"]) 95 AM_CONDITIONAL([DRUNTIME_OS_ANDROID], 96 [test "$druntime_target_os_parsed" = "android"]) 97 AM_CONDITIONAL([DRUNTIME_OS_DARWIN], 98 [test "$druntime_target_os_parsed" = "darwin"]) 99 AM_CONDITIONAL([DRUNTIME_OS_DRAGONFLYBSD], 100 [test "$druntime_target_os_parsed" = "dragonflybsd"]) 101 AM_CONDITIONAL([DRUNTIME_OS_FREEBSD], 102 [test "$druntime_target_os_parsed" = "freebsd"]) 103 AM_CONDITIONAL([DRUNTIME_OS_NETBSD], 104 [test "$druntime_target_os_parsed" = "netbsd"]) 105 AM_CONDITIONAL([DRUNTIME_OS_OPENBSD], 106 [test "$druntime_target_os_parsed" = "openbsd"]) 107 AM_CONDITIONAL([DRUNTIME_OS_LINUX], 108 [test "$druntime_target_os_parsed" = "linux"]) 109 AM_CONDITIONAL([DRUNTIME_OS_MINGW], 110 [test "$druntime_target_os_parsed" = "mingw"]) 111 AM_CONDITIONAL([DRUNTIME_OS_SOLARIS], 112 [test "$druntime_target_os_parsed" = "solaris"]) 113 114 druntime_target_posix="no" 115 case "$druntime_cv_target_os" in 116 aix*|*bsd*|cygwin*|darwin*|dragonfly*|gnu*|linux*|skyos*|*solaris*|sysv*) 117 druntime_target_posix="yes" 118 ;; 119 esac 120 AM_CONDITIONAL([DRUNTIME_OS_POSIX], [test "$druntime_target_posix" = "yes"]) 121 ]) 122 123 124 # DRUNTIME_OS_ARM_EABI_UNWINDER 125 # ------------------------ 126 # Check if using ARM unwinder and substitute DCFG_ARM_EABI_UNWINDER 127 # and set DRUNTIME_OS_ARM_EABI_UNWINDER conditional. 128 AC_DEFUN([DRUNTIME_OS_ARM_EABI_UNWINDER], 129 [ 130 AC_LANG_PUSH([C]) 131 AC_MSG_CHECKING([for ARM unwinder]) 132 AC_TRY_COMPILE([#include <unwind.h>],[ 133 #if __ARM_EABI_UNWINDER__ 134 #error Yes, it is. 135 #endif 136 ], 137 [AC_MSG_RESULT([no]) 138 DCFG_ARM_EABI_UNWINDER=false], 139 [AC_MSG_RESULT([yes]) 140 DCFG_ARM_EABI_UNWINDER=true]) 141 AC_SUBST(DCFG_ARM_EABI_UNWINDER) 142 AM_CONDITIONAL([DRUNTIME_OS_ARM_EABI_UNWINDER], [test "$DCFG_ARM_EABI_UNWINDER" = "true"]) 143 AC_LANG_POP([C]) 144 ]) 145 146 147 # DRUNTIME_OS_MINFO_BRACKETING 148 # ---------------------------- 149 # Check if the linker provides __start_minfo and __stop_minfo symbols and 150 # substitute DCFG_MINFO_BRACKETING. 151 AC_DEFUN([DRUNTIME_OS_MINFO_BRACKETING], 152 [ 153 AC_REQUIRE([DRUNTIME_OS_DETECT]) 154 155 AC_LANG_PUSH([C]) 156 AC_MSG_CHECKING([for minfo section bracketing]) 157 case "$druntime_cv_target_os" in 158 darwin*) 159 section="__DATA,__minfodata" 160 start="section\$start\$__DATA\$__minfodata" 161 stop="section\$end\$__DATA\$__minfodata" 162 ;; 163 *) 164 section="minfo" 165 start="__start_minfo" 166 stop="__stop_minfo" 167 ;; 168 esac 169 AC_LINK_IFELSE([AC_LANG_SOURCE([ 170 void* module_info_ptr __attribute__((section ("$section"))); 171 extern void* start_minfo __asm__("$start") __attribute__((visibility ("hidden"))); 172 extern void* stop_minfo __asm__("$stop") __attribute__((visibility ("hidden"))); 173 174 int main() 175 { 176 // Never run, just to prevent compiler from optimizing access 177 return (int)(&stop_minfo - &start_minfo); 178 } 179 ])], 180 [AC_MSG_RESULT([yes]) 181 DCFG_MINFO_BRACKETING=true], 182 [AC_MSG_RESULT([no]) 183 DCFG_MINFO_BRACKETING=false]) 184 AC_SUBST(DCFG_MINFO_BRACKETING) 185 AM_CONDITIONAL([DRUNTIME_OS_MINFO_BRACKETING], [test "$DCFG_MINFO_BRACKETING" = "true"]) 186 AC_LANG_POP([C]) 187 ]) 188 189 # DRUNTIME_OS_DLPI_TLS_MODID 190 # ---------------------------- 191 # Check if struct dl_phdr_info includes the dlpi_tls_modid member and 192 # substitute DCFG_DLPI_TLS_MODID. 193 AC_DEFUN([DRUNTIME_OS_DLPI_TLS_MODID], 194 [ 195 AC_LANG_PUSH([C]) 196 AC_CHECK_MEMBER([struct dl_phdr_info.dlpi_tls_modid], 197 [DCFG_DLPI_TLS_MODID=true], [DCFG_DLPI_TLS_MODID=false], 198 [[#include <link.h>]]) 199 AC_SUBST(DCFG_DLPI_TLS_MODID) 200 AC_LANG_POP([C]) 201 ]) 202 203 # DRUNTIME_OS_LINK_SPEC 204 # --------------------- 205 # Add target-specific link options to link_spec. 206 AC_DEFUN([DRUNTIME_OS_LINK_SPEC], 207 [ 208 case $target in 209 i?86-*-solaris2.* | x86_64-*-solaris2.*) 210 # 64-bit Solaris/x86 ld breaks calls to __tls_get_addr with non-TLS 211 # relocs. Work around by disabling TLS transitions. Not necessary 212 # on 32-bit x86, but cannot be distinguished reliably in specs. 213 druntime_ld_prog=`$CC -print-prog-name=ld` 214 druntime_ld_gld=no 215 druntime_ld_relax_transtls=no 216 if test -n "$druntime_ld_prog" \ 217 && $druntime_ld_prog -v 2>&1 | grep GNU > /dev/null 2>&1; then 218 druntime_ld_gld=yes 219 else 220 echo 'int main (void) { return 0; }' > conftest.c 221 save_LDFLAGS="$LDFLAGS" 222 LDFLAGS="$LDFLAGS -Wl,-z,relax=transtls" 223 if $CC $CFLAGS $LDFLAGS -o conftest conftest.c > /dev/null 2>&1; then 224 druntime_ld_relax_transtls=yes 225 fi 226 LDFLAGS="$save_LDFLAGS" 227 rm -f conftest.c conftest 228 fi 229 if test "$druntime_ld_relax_transtls" = "yes"; then 230 OS_LINK_SPEC='-z relax=transtls' 231 fi 232 ;; 233 esac 234 AC_SUBST(OS_LINK_SPEC) 235 ]) 236
Indexes created Tue Sep 15 00:24:42 UTC 2026