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Portability: Use stack-allocated arrays only if the compiler supports them.

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This commit is contained in:
Bruno Haible
2003-04-10 10:26:05 +00:00
parent bfefa088aa
commit f619dea2f5
5 changed files with 61 additions and 6 deletions
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13
src/configure.in
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@@ -40,6 +40,19 @@ CL_PROG_INSTALL
dnl
dnl checks for compiler characteristics
dnl
AC_MSG_CHECKING([for stack-allocated variable-size arrays])
AC_CACHE_VAL(gp_cv_cxx_dynamic_array, [
AC_LANG_SAVE()
AC_LANG_CPLUSPLUS()
AC_TRY_COMPILE([int func (int n) { int dynamic_array[n]; }], [],
gp_cv_cxx_dynamic_array=yes, gp_cv_cxx_dynamic_array=no)
AC_LANG_RESTORE()
])
AC_MSG_RESULT($gp_cv_cxx_dynamic_array)
if test $gp_cv_cxx_dynamic_array = yes; then
AC_DEFINE(HAVE_DYNAMIC_ARRAY, 1,
[Define if the C++ compiler supports stack-allocated variable-size arrays.])
fi
dnl
dnl checks for functions and declarations
dnl