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authorSam James <sam@gentoo.org>2022-03-22 17:33:09 +0000
committerMike Frysinger <vapier@gentoo.org>2022-03-22 21:53:43 -0400
commitcb7b1c9014945cb79cdd0b375e65724d6c574a8c (patch)
tree746e7102985b8312f3bb9873db7c1665ff5d49b7 /configure.ac
parentd3f2c2c8b57bdf9d963db8fa2372d6c1b86a337e (diff)
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configure.ac: fix bashisms in configure.ac
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>
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 87f67d25ec..fa7d3c025b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -767,7 +767,7 @@ 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"$libc_cv_gcc_incompatible_alias" = xyes; then
     AC_MSG_WARN([gcc emits a warning for alias between functions of incompatible types])
     if test x"$multi_arch" = xyes; then
       AC_MSG_ERROR([--enable-multi-arch support requires a gcc with gnu-indirect-function support])