diff options
| author | Roger Sayle <roger@nextmovesoftware.com> | 2022-08-01 11:36:23 +0100 |
|---|---|---|
| committer | Roger Sayle <roger@nextmovesoftware.com> | 2022-08-01 11:40:50 +0100 |
| commit | 71f068a9b3332a2179dfc807cf9138f691d77461 (patch) | |
| tree | 66cd6fd1287e18f58535fa89d9d50d6bb8087350 /config/acx.m4 | |
| parent | 5d8637208d35f78b51f8cff38c984836ab2c860f (diff) | |
| download | gcc-71f068a9b3332a2179dfc807cf9138f691d77461.tar.gz | |
Update configure to check for a recent gnat Ada compiler.
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.
Diffstat (limited to 'config/acx.m4')
| -rw-r--r-- | config/acx.m4 | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/config/acx.m4 b/config/acx.m4 index b86c4f9e51d..7efe98aaf96 100644 --- a/config/acx.m4 +++ b/config/acx.m4 @@ -393,9 +393,13 @@ AC_DEFUN([ACX_PROG_GNAT], AC_REQUIRE([AC_PROG_CC]) AC_CHECK_TOOL(GNATBIND, gnatbind, no) AC_CHECK_TOOL(GNATMAKE, gnatmake, no) -AC_CACHE_CHECK([whether compiler driver understands Ada], +AC_CACHE_CHECK([whether compiler driver understands Ada and is recent enough], acx_cv_cc_gcc_supports_ada, [cat >conftest.adb <<EOF +pragma Warnings (Off); +with System.CRTL; +pragma Warnings (On); +use type System.CRTL.int64; procedure conftest is begin null; end conftest; EOF acx_cv_cc_gcc_supports_ada=no |