[gnutls-devel] GnuTLS | configure.ac: check if compiler supports -Wa, -march=all (!1579)

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Tue May 3 18:52:13 CEST 2022

John Ralls commented on a discussion: https://gitlab.com/gnutls/gnutls/-/merge_requests/1579#note_933707270

Indeed, config.log says
>configure:11495: checking whether the compiler supports -Wa,-march=all
configure:11509: result: yes

Trying the test at the command line:
/Applications/Xcode.app/Contents/Developer/usr/bin/gcc -Wa,-march=all -c test.s
Segmentation fault: 11
But that's *not* what your commit does. From configure:
  if "$CCAS" "$AARCH64_CCASFLAGS" -c conftest.c >/dev/null 2>&1; then
    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
printf "%s\n" "yes" >&6; }
    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
printf "%s\n" "no" >&6; }
and in the shell
$ > /Applications/Xcode.app/Contents/Developer/usr/bin/gcc -Wa,-march=all -c test.c
$ >
The difference is that configure is testing a C compile not an assembler run.

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