diff options
Diffstat (limited to 'config/gthr.m4')
| -rw-r--r-- | config/gthr.m4 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/config/gthr.m4 b/config/gthr.m4 index 1199624..e8fac4a 100644 --- a/config/gthr.m4 +++ b/config/gthr.m4 @@ -5,6 +5,26 @@ dnl Public License, this file may be distributed as part of a program dnl that contains a configuration script generated by Autoconf, under dnl the same distribution terms as the rest of that program. +dnl Define thread model + +dnl usage: GCC_AC_THREAD_MODEL +AC_DEFUN([GCC_AC_THREAD_MODEL], +[ +# Specify the threading model for this GCC runtime library +# Pass with no value to take from compiler's metadata +# Pass with a value to specify a thread package +# 'single' means single threaded -- without threads. +AC_CACHE_CHECK([for the threading model used by GCC], [gcc_cv_target_thread_file], [ + # Set new cache variable + gcc_cv_target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` +]) +# Set variable name (not prefixed enough to be a good cache variable +# name) traditionally used for this purpose, to avoid having to change +# a bunch of configure scripts. +target_thread_file="$gcc_cv_target_thread_file" +]) + + dnl Define header location by thread model dnl usage: GCC_AC_THREAD_HEADER([thread_model]) @@ -23,6 +43,9 @@ case $1 in vxworks) thread_header=config/gthr-vxworks.h ;; win32) thread_header=config/i386/gthr-win32.h ;; mcf) thread_header=config/i386/gthr-mcf.h ;; + *) + AC_MSG_ERROR([No known header for threading model '$1'.]) + ;; esac AC_SUBST(thread_header) ]) |