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GCC fails to bootstrap when configured with --enable-languages=all on machines that have older versions of GNAT installed as the system Ada compiler. In configure, it's not sufficient to check whether gnat is available, but whether a sufficiently recent version of GNAT is installed. This patch tweaks config/acx.m4 so that conftest.adb also contains a reference to System.CRTL.int64 as required by the current version of gcc/ada/osint.adb. This fixes the build when the system Ada is GNAT v4.8.5 (on Redhat 7) by disabling ada, but continues to work fine when the system Ada is GNAT v11.3.1. 2022-08-01 Roger Sayle <roger@nextmovesoftware.com> Arnaud Charlet <charlet@adacore.com> config/ChangeLog * acx.m4 (AC_PROG_GNAT): Update conftest.adb to include features required of the host gnat compiler. ChangeLog * configure: Regenerate.
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