multilib-build.eclass: Replace non-portable use of 'declare -g'

Replace uses of 'declare -g -r' (bash-4.2+) with 'readonly'. Reported
by Arfrever.

diff --git a/eclass/multilib-build.eclass b/eclass/multilib-build.eclass
index 0d4ffd9df9b4298531e58a87415a8f11c925abbb..91885a464501bd00fc04a159192c4d9eb6e7021e 100644 (file)
--- a/eclass/multilib-build.eclass
+++ b/eclass/multilib-build.eclass
@@ -38,7 +38,7 @@ inherit multibuild multilib
 # Please contact multilib before modifying this list. This way we can
 # ensure that every *preliminary* work is done and the multilib can be
 # extended safely.
-declare -g -r _MULTILIB_FLAGS=(
+readonly _MULTILIB_FLAGS=(
        abi_x86_32:x86,x86_fbsd,x86_freebsd,x86_linux,x86_macos,x86_solaris
        abi_x86_64:amd64,amd64_fbsd,x64_freebsd,amd64_linux,x64_macos,x64_solaris
        abi_x86_x32:x32
@@ -124,7 +124,7 @@ _multilib_build_set_globals() {
        local usedeps=${flags[@]/%/(-)?}
 
        IUSE=${flags[*]}
-       declare -g -r MULTILIB_USEDEP=${usedeps// /,}
+       readonly MULTILIB_USEDEP=${usedeps// /,}
 }
 _multilib_build_set_globals
 unset -f _multilib_build_set_globals