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configure.ac: fix bashisms in configure.ac

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configure scripts need to be runnable with a POSIX-compliant /bin/sh.

On many (but not all!) systems, /bin/sh is provided by Bash, so errors
like this aren't spotted. Notably Debian defaults to /bin/sh provided
by dash which doesn't tolerate such bashisms as '=='.

This retains compatibility with bash.

Fixes configure warnings/errors like:
```
checking if compiler warns about alias for function with incompatible types... yes
/var/tmp/portage/sys-libs/glibc-2.34-r10/work/glibc-2.34/configure: 4209: test: xyes: unexpected operator
```

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Signed-off-by: Sam James <sam@gentoo.org>
This commit is contained in:
Sam James
2022-03-22 17:33:09 +00:00
committed by Mike Frysinger
parent d3f2c2c8b5
commit cb7b1c9014
6 changed files with 6 additions and 6 deletions
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2
configure vendored
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@@ -4232,7 +4232,7 @@ if test x"$libc_cv_gcc_indirect_function" != xyes; then
# GCC 8+ emits a warning for alias with incompatible types and it might
# fail to build ifunc resolvers aliases to either weak or internal
# symbols. Disables multiarch build in this case.
if test x"$libc_cv_gcc_incompatible_alias" == xyes; then
if test x"$libc_cv_gcc_incompatible_alias" = xyes; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: gcc emits a warning for alias between functions of incompatible types" >&5
$as_echo "$as_me: WARNING: gcc emits a warning for alias between functions of incompatible types" >&2;}
if test x"$multi_arch" = xyes; then