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Make it right to check/implement va_copy

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This commit is contained in:
Tu Duong Quyet
2022-07-28 17:46:07 +07:00
committed by Steffen Jaeckel
parent 8ea15cf656
commit 1a8be1d617
3 changed files with 77 additions and 5 deletions
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34
configure.ac
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@@ -88,7 +88,39 @@ AX_VALGRIND_CHECK
AC_SEARCH_LIBS([socket], [network socket])
AC_CHECK_FUNCS([snprintf vsnprintf], [], [have_snprintf=no])
AC_CHECK_DECLS([va_copy], [], [], [#include <stdarg.h>])
dnl Checking for va_copy availability
AC_MSG_CHECKING([for va_copy])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>
va_list ap1,ap2;]], [[va_copy(ap1,ap2);]])],
have_va_copy=yes,
have_va_copy=no)
AC_MSG_RESULT($have_va_copy)
if test x"$have_va_copy" = x"yes"; then
AC_DEFINE(HAVE_VA_COPY,1,[Whether va_copy() is available])
else
AC_MSG_CHECKING([for __va_copy])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>
va_list ap1,ap2;]], [[__va_copy(ap1,ap2);]])],
have___va_copy=yes,
have___va_copy=no)
AC_MSG_RESULT($have___va_copy)
if test x"$have___va_copy" = x"yes"; then
AC_DEFINE(HAVE___VA_COPY,1,[Whether __va_copy() is available])
fi
fi
if test x"$have_va_copy$have___va_copy" = x"nono"; then
dnl Checking whether va_list is an array type
AC_MSG_CHECKING([whether va_list is an array type])
AC_TRY_COMPILE2([
#include <stdarg.h>
void a(va_list * ap) {}],[
va_list ap1, ap2; a(&ap1); ap2 = (va_list) ap1],[
AC_MSG_RESULT(no)],[
AC_MSG_RESULT(yes)
AC_DEFINE([VA_LIST_IS_ARRAY], [1],[Define if va_list is an array type])])
fi
if test "x$enable_tls" != xno -a "x$with_gnutls" == xyes; then
PKG_CHECK_MODULES([gnutls], [gnutls],