58 lines
1.7 KiB
Diff
58 lines
1.7 KiB
Diff
--- autoconf-2.13/acgeneral.m4~ Tue Jun 26 17:00:28 2001
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+++ autoconf-2.13/acgeneral.m4 Tue Jun 26 17:00:28 2001
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@@ -1817,10 +1817,6 @@
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[cat > conftest.$ac_ext <<EOF
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[#]line __oline__ "configure"
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#include "confdefs.h"
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-ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
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-extern "C" void exit(int);
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-#endif
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-])dnl
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[$1]
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EOF
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if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
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--- autoconf-2.13/acspecific.m4~ Tue Jun 26 17:04:34 2001
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+++ autoconf-2.13/acspecific.m4 Tue Jun 26 17:04:34 2001
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@@ -152,8 +152,41 @@
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CXXFLAGS=
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fi
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fi
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+
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+AC_PROG_CXX_EXIT_DECLARATION
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])
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+
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+# AC_PROG_CXX_EXIT_DECLARATION
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+# -----------------------------
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+# Find a valid prototype for exit and declare it in confdefs.h.
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+AC_DEFUN(AC_PROG_CXX_EXIT_DECLARATION,
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+[for ac_declaration in \
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+ ''\
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+ '#include <stdlib.h>' \
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+ 'extern "C" void std::exit (int) throw (); using std::exit;' \
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+ 'extern "C" void std::exit (int); using std::exit;' \
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+ 'extern "C" void exit (int) throw ();' \
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+ 'extern "C" void exit (int);' \
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+ 'void exit (int);'
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+do
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+ AC_TRY_COMPILE([#include <stdlib.h>
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+$ac_declaration],
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+ [exit (42);],
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+ [],
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+ [continue])
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+ AC_TRY_COMPILE([$ac_declaration],
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+ [exit (42);],
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+ [break])
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+done
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+if test -n "$ac_declaration"; then
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+ echo '#ifdef __cplusplus' >>confdefs.h
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+ echo $ac_declaration >>confdefs.h
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+ echo '#endif' >>confdefs.h
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+fi
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+])# AC_PROG_CXX_EXIT_DECLARATION
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+
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+
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dnl Determine a Fortran 77 compiler to use. If `F77' is not already set
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dnl in the environment, check for `g77', `f77' and `f2c', in that order.
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dnl Set the output variable `F77' to the name of the compiler found.
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