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Diffstat (limited to 'src/grep/m4/pthread-thread.m4')
| -rw-r--r-- | src/grep/m4/pthread-thread.m4 | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/grep/m4/pthread-thread.m4 b/src/grep/m4/pthread-thread.m4 new file mode 100644 index 0000000..949186d --- /dev/null +++ b/src/grep/m4/pthread-thread.m4 @@ -0,0 +1,69 @@ +# pthread-thread.m4 serial 2 +dnl Copyright (C) 2019-2021 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_THREAD], +[ + AC_REQUIRE([gl_PTHREAD_H]) + AC_REQUIRE([AC_CANONICAL_HOST]) + + if { case "$host_os" in mingw*) 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_CREATE=1 + REPLACE_PTHREAD_ATTR_INIT=1 + REPLACE_PTHREAD_ATTR_GETDETACHSTATE=1 + REPLACE_PTHREAD_ATTR_SETDETACHSTATE=1 + REPLACE_PTHREAD_ATTR_DESTROY=1 + REPLACE_PTHREAD_SELF=1 + REPLACE_PTHREAD_EQUAL=1 + REPLACE_PTHREAD_DETACH=1 + REPLACE_PTHREAD_JOIN=1 + REPLACE_PTHREAD_EXIT=1 + else + if test $HAVE_PTHREAD_H = 0; then + HAVE_PTHREAD_CREATE=0 + HAVE_PTHREAD_ATTR_INIT=0 + HAVE_PTHREAD_ATTR_GETDETACHSTATE=0 + HAVE_PTHREAD_ATTR_SETDETACHSTATE=0 + HAVE_PTHREAD_ATTR_DESTROY=0 + HAVE_PTHREAD_SELF=0 + HAVE_PTHREAD_EQUAL=0 + HAVE_PTHREAD_DETACH=0 + HAVE_PTHREAD_JOIN=0 + HAVE_PTHREAD_EXIT=0 + else + dnl On HP-UX 11.11, pthread_create() and pthread_attr_init() are only + dnl defined as inline functions. + AC_CACHE_CHECK([whether pthread_create exists as a global function], + [gl_cv_func_pthread_create], + [saved_LIBS="$LIBS" + LIBS="$LIBS $LIBPMULTITHREAD" + AC_LINK_IFELSE( + [AC_LANG_SOURCE( + [[extern + #ifdef __cplusplus + "C" + #endif + int pthread_create (void); + int main () + { + return pthread_create (); + } + ]])], + [gl_cv_func_pthread_create=yes], + [gl_cv_func_pthread_create=no]) + LIBS="$saved_LIBS" + ]) + if test $gl_cv_func_pthread_create = no; then + REPLACE_PTHREAD_CREATE=1 + REPLACE_PTHREAD_ATTR_INIT=1 + AC_DEFINE([PTHREAD_CREATE_IS_INLINE], [1], + [Define if pthread_create is an inline function.]) + fi + fi + fi +]) |