macOS: Disable locale support when building on macOS

Remove locale support on macOS. uClibc runs an application on a host to
generate local files, but that application fails to build on macOS,
therefore locale support has to be disabled on macOS hosts.

Signed-off-by: Anton Kolesov <[email protected]>

Author: anthony-kolesov

README.md

@@ -104,6 +104,13 @@ To build PDF documentation for toolchain TeX must be installed:
 If PDF documentation is not needed, pass option `--no-pdf` to build-all.sh to
 disable its build, then mactex is not required.
 
+> NB! Linux/uClibc toolchain built on macOS has different uClibc configuration
+> then the one built on Linux hosts - **local support is disabled**. The reason
+> is that when locale support is enabled, uClibc makefiles will build an
+> application called `genlocale` that will run on host system, but on macOS
+> this application fails to build, therefore support for locales is disabled
+> when Linux/uClibc toolchain is built on macOS.
+
 
 Getting sources
 ---------------

build-uclibc.sh

@@ -450,6 +450,13 @@ else
            -i $uc_dot_config
 fi
 
+# Remove locale support on macOS. uClibc runs an application on a host to
+# generate local files, but that application fails to build on macOS, therefore
+# locale support has to be disabled on macOS hosts.
+if [ "$IS_MAC_OS" = yes ]; then
+    kconfig_disable_option $uc_dot_config UCLIBC_HAS_LOCALE
+fi
+
 # Disable HARDWIRED_ABSPATH to avoid absolute path references to allow
 # relocatable toolchains.
 echo "HARDWIRED_ABSPATH=n" >> $uc_dot_config