Fix test case gdb.base/valgrind-bt.exp.

[deliverable/binutils-gdb.git] / gdbsupport / common.m4

diff --git a/gdbsupport/common.m4 b/gdbsupport/common.m4
index 2b5750e81d1f855f46c9f0cb65a43823552b1220..3ed95dabc858fc6d7cafa46289411eaea4f8343c 100644 (file)
--- a/gdbsupport/common.m4
+++ b/gdbsupport/common.m4
@@ -1,5 +1,5 @@
 dnl Autoconf configure snippets for common.
-dnl Copyright (C) 1995-2020 Free Software Foundation, Inc.
+dnl Copyright (C) 1995-2021 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GDB.
 dnl 
@@ -50,7 +50,7 @@ AC_DEFUN([GDB_AC_COMMON], [
                   poll.h sys/poll.h sys/select.h)
 
   AC_FUNC_MMAP
-  AC_FUNC_VFORK
+  AC_FUNC_FORK
   AC_CHECK_FUNCS([fdwalk getrlimit pipe pipe2 poll socketpair sigaction \
                  ptrace64 sbrk setns sigaltstack sigprocmask \
                  setpgid setpgrp getrusage getauxval])
@@ -127,11 +127,20 @@ AC_DEFUN([GDB_AC_COMMON], [
 
   dnl Check if sigsetjmp is available.  Using AC_CHECK_FUNCS won't
   dnl do since sigsetjmp might only be defined as a macro.
-  AC_CACHE_CHECK([for sigsetjmp], gdb_cv_func_sigsetjmp,
-  [AC_TRY_COMPILE([
-  #include <setjmp.h>
-  ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
-  gdb_cv_func_sigsetjmp=yes, gdb_cv_func_sigsetjmp=no)])
+  AC_CACHE_CHECK(
+    [for sigsetjmp],
+    [gdb_cv_func_sigsetjmp],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [#include <setjmp.h>],
+          [sigjmp_buf env;
+           while (! sigsetjmp (env, 1))
+             siglongjmp (env, 1);]
+        )],
+       [gdb_cv_func_sigsetjmp=yes],
+       [gdb_cv_func_sigsetjmp=no]
+     )]
+  )
   if test "$gdb_cv_func_sigsetjmp" = "yes"; then
     AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
   fi