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Diffstat (limited to 'gnulib-m4/pthread-once.m4')
| -rw-r--r-- | gnulib-m4/pthread-once.m4 | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/gnulib-m4/pthread-once.m4 b/gnulib-m4/pthread-once.m4 new file mode 100644 index 00000000..46b8840e --- /dev/null +++ b/gnulib-m4/pthread-once.m4 @@ -0,0 +1,36 @@ +# pthread-once.m4 +# serial 3 +dnl Copyright (C) 2019-2024 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_PTHREAD_ONCE], +[ + AC_REQUIRE([gl_PTHREAD_H]) + AC_REQUIRE([AC_CANONICAL_HOST]) + + if { case "$host_os" in mingw* | windows*) true;; *) false;; esac; } \ + && test $gl_threads_api = windows; then + dnl Choose function names that don't conflict with the mingw-w64 winpthreads + dnl library. + REPLACE_PTHREAD_ONCE=1 + else + if test $HAVE_PTHREAD_H = 0; then + HAVE_PTHREAD_ONCE=0 + else + dnl Work around Cygwin 3.5.3 bug. + AC_CACHE_CHECK([whether pthread_once works], + [gl_cv_func_pthread_once_works], + [case "$host_os" in + cygwin*) gl_cv_func_pthread_once_works="guessing no" ;; + *) gl_cv_func_pthread_once_works="yes" ;; + esac + ]) + case "$gl_cv_func_pthread_once_works" in + *yes) ;; + *) REPLACE_PTHREAD_ONCE=1 ;; + esac + fi + fi +]) |