[PATCH 2/2] Makeconfig: make inst_complocaledir overridable

[Maximilian Bosch]

On NixOS, we build the locales in a separate package from glibc itself.
Also, packages aren't installed into a common location such as `/usr`,
but each package has its own unique prefix below `/nix/store`.

For us, the current state is a problem because `localedef` is built
in a different package and expects DESTDIR to be the unique
package-prefix of `glibc` itself. Our current workaround is to
invoke `localedef` with `--prefix=$TMPDIR` and copy the contents
to the correct prefix. This was doable without patching when
`localedef` was doing build & locale-archive creation at the
same time.

With the previous patch, the Makefile uses `$(inst_complocaledir)` to
tell localedef where the previously built locales are. In NixOS, we now
need to override `$(inst_complocaledir)` to point to
`$TMPDIR/$(glibc.out)`. Hence, this patch makes the variable overridable
from env.
---
 Makeconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makeconfig b/Makeconfig
index 9eda4fa528..43d88325bc 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -197,7 +197,7 @@ inst_zonedir = $(install_root)$(zonedir)
 ifndef complocaledir
 complocaledir = $(libdir)/locale
 endif
-inst_complocaledir = $(install_root)$(complocaledir)
+inst_complocaledir ?= $(install_root)$(complocaledir)
 
 # Where to install the message catalog data files (which are
 # machine-independent).
-- 
2.50.1