37 lines
1.2 KiB
Text
37 lines
1.2 KiB
Text
# pthread-once.m4
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# serial 3
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dnl Copyright (C) 2019-2024 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl This file is offered as-is, without any warranty.
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AC_DEFUN([gl_PTHREAD_ONCE],
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[
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AC_REQUIRE([gl_PTHREAD_H])
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AC_REQUIRE([AC_CANONICAL_HOST])
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if { case "$host_os" in mingw* | windows*) true;; *) false;; esac; } \
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&& test $gl_threads_api = windows; then
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dnl Choose function names that don't conflict with the mingw-w64 winpthreads
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dnl library.
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REPLACE_PTHREAD_ONCE=1
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else
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if test $HAVE_PTHREAD_H = 0; then
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HAVE_PTHREAD_ONCE=0
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else
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dnl Work around Cygwin 3.5.3 bug.
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AC_CACHE_CHECK([whether pthread_once works],
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[gl_cv_func_pthread_once_works],
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[case "$host_os" in
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cygwin*) gl_cv_func_pthread_once_works="guessing no" ;;
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*) gl_cv_func_pthread_once_works="yes" ;;
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esac
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])
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case "$gl_cv_func_pthread_once_works" in
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*yes) ;;
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*) REPLACE_PTHREAD_ONCE=1 ;;
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esac
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fi
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fi
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])
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