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A better configure test for fixing the IRIX bustage.

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git-svn-id: svn://10.0.0.236/trunk@83456 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
dbaron%fas.harvard.edu
2000-12-10 04:27:38 +00:00
parent 58d9503b7f
commit 50436dd93f
1 changed files with 21 additions and 8 deletions
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29
mozilla/configure.in
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@@ -2645,14 +2645,27 @@ fi
dnl Some compilers have trouble resolving the ambiguity between two
dnl functions whose arguments differ only by cv-qualifications.
AC_CACHE_CHECK(whether the compiler cannot resolve const ambiguities correctly,
ac_cv_cant_resolve_const_ambiguity,
[AC_TRY_COMPILE([int a(int *i) { return *i; }
const int a(const int *i) { return *i; } ],
[ int i; a(&i); ],
ac_cv_cant_resolve_const_ambiguity=no,
ac_cv_cant_resolve_const_ambiguity=yes)])
if test "$ac_cv_cant_resolve_const_ambiguity" = yes ; then
AC_CACHE_CHECK(whether the compiler can resolve const ambiguities for templates,
ac_cv_can_resolve_const_ambiguity,
[AC_TRY_COMPILE([
template <class T> class ptrClass {
public: T* ptr;
};
template <class T> T* a(ptrClass<T> *arg) {
return arg->ptr;
}
template <class T>
const T* a(const ptrClass<T> *arg) {
return arg->ptr;
}
],
[ ptrClass<int> i;
a(&i); ],
ac_cv_can_resolve_const_ambiguity=yes,
ac_cv_can_resolve_const_ambiguity=no)])
if test "$ac_cv_can_resolve_const_ambiguity" = no ; then
AC_DEFINE(CANT_RESOLVE_CPP_CONST_AMBIGUITY)
fi