diff options
Diffstat (limited to 'libphobos/m4/druntime/os.m4')
| -rw-r--r-- | libphobos/m4/druntime/os.m4 | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/libphobos/m4/druntime/os.m4 b/libphobos/m4/druntime/os.m4 index 15cde3b..ef8ca43 100644 --- a/libphobos/m4/druntime/os.m4 +++ b/libphobos/m4/druntime/os.m4 @@ -121,6 +121,33 @@ AC_DEFUN([DRUNTIME_OS_SOURCES], ]) +# 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 |