[Boost-build] template-depth hard coded to 128 on gcc

Subject: [Boost-build] template-depth hard coded to 128 on gcc
From: Wieger Wesselink (wieger_at_[hidden])
Date: 2013-05-14 11:32:45

Hello,

In gcc.jam the value of template-depth seems to be set to 128 if it is
undefined, using

    if ! $(template-depth)
    {
        TEMPLATE_DEPTH on $(<) = 128 ;
    }

However, the gcc manual states the following: "ANSI/ISO C++ conforming
programs must not rely on a maximum depth greater than 17 (changed to
1024 in C++11)". So it should not be set to 128 in C++11 mode. Can the
above statement be skipped when compiling in C++11 mode, or is it
difficult to detect this?

Best regards,

Wieger

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