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>
# 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"$multi_arch" = xyes; then
# GCC 8+ emits a warning for alias with incompatible types and it might
# fail to build ifunc resolvers aliases to either weak or internal
# symbols. Disables multiarch build in this case.
- if test x"$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])
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_compiler_powerpc64le_ldbl128_mabi" >&5
$as_echo "$libc_cv_compiler_powerpc64le_ldbl128_mabi" >&6; }
-if test "$libc_cv_compiler_powerpc64le_ldbl128_mabi" == "no"; then :
+if test "$libc_cv_compiler_powerpc64le_ldbl128_mabi" = "no"; then :
critic_missing="$critic_missing The compiler must support -mabi=ieeelongdouble and -mlong-double-128 simultaneously."
fi
[libc_cv_compiler_powerpc64le_ldbl128_mabi=yes],
[libc_cv_compiler_powerpc64le_ldbl128_mabi=no])
CFLAGS="$save_CFLAGS"])
-AS_IF([test "$libc_cv_compiler_powerpc64le_ldbl128_mabi" == "no"],
+AS_IF([test "$libc_cv_compiler_powerpc64le_ldbl128_mabi" = "no"],
[critic_missing="$critic_missing The compiler must support -mabi=ieeelongdouble and -mlong-double-128 simultaneously."])
dnl objcopy (binutils) 2.26 or newer required to support the --update-section
$as_echo "$libc_cv_mcpu_power10" >&6; }
config_vars="$config_vars
mcpu-power10 = $libc_cv_mcpu_power10"
-if test "$libc_cv_mcpu_power10" == "yes"; then :
+if test "$libc_cv_mcpu_power10" = "yes"; then :
$as_echo "#define USE_PPC64_MCPU_POWER10 1" >>confdefs.h
[libc_cv_mcpu_power10=yes],
[libc_cv_mcpu_power10=no])])
LIBC_CONFIG_VAR([mcpu-power10], [$libc_cv_mcpu_power10])
-AS_IF([[test "$libc_cv_mcpu_power10" == "yes"]],[
+AS_IF([[test "$libc_cv_mcpu_power10" = "yes"]],[
AC_DEFINE(USE_PPC64_MCPU_POWER10)])
CFLAGS="$OLD_CFLAGS"