From 012d607fa5ca2dd8d7b48110a9639841cd3db704 Mon Sep 17 00:00:00 2001
From: Kent Fredric <kentnl@gentoo.org>
Date: Sun, 16 Aug 2020 12:59:38 +1200
Subject: Remove libdir/incdir autodetection magic

Instead, in favour of gentoo controled paths and hard-erroring when
they're wrong.

Bug: https://bugs.gentoo.org/737212
---
 Build.PL | 70 +++++++++++---------------------------------------------
 1 file changed, 13 insertions(+), 57 deletions(-)

diff --git a/Build.PL b/Build.PL
index c76c1d8..d2179de 100644
--- a/Build.PL
+++ b/Build.PL
@@ -9,64 +9,20 @@ use Module::Build;
 
 use File::Spec;
 
-my $inc_dir;
-my $lib_dir;
-
-# possible prefixes where we might find libwrap.a
-# if you know of other common ones please let me know
-my @prefixes = (
-    File::Spec->catdir( File::Spec->rootdir, 'usr' ),
-    File::Spec->catdir( File::Spec->rootdir, 'usr', 'local' ),
-    File::Spec->catdir( File::Spec->rootdir, 'opt' ),
-    File::Spec->catdir( File::Spec->rootdir, 'opt', 'local' ),
-    File::Spec->catdir( File::Spec->rootdir, 'opt', 'libwrap' ),
-    File::Spec->catdir( File::Spec->rootdir, 'opt', 'tcpwrappers' ),
-);
-
-# try to figure out where libwrap.a is
-for my $prefix( @prefixes ) {
-    for my $libname( qw|libwrap.so libwrap.a| ) {
-        my $candidate = File::Spec->catfile( $prefix, 'lib', $libname );
-        if( -e $candidate && -f _ && -r _ ) {
-            my $y_n = Module::Build->y_n(
-                "do you want to link against $candidate?", "y"
-            );
-            if( $y_n ) {
-                $lib_dir = File::Spec->catdir( $prefix, 'lib' );
-                last;
-            }
-        }
-    }
-}
-
-# try to figure out where tcpd.h is
-for my $prefix( @prefixes ) {
-    my $candidate = File::Spec->catfile( $prefix, 'include', 'tcpd.h' );
-    if( -e $candidate && -f _ && -r _ ) {
-        my $y_n = Module::Build->y_n(
-            "do you want to use $candidate as your header?", "y"
-        );
-        if( $y_n ) {
-            $inc_dir = File::Spec->catdir( $prefix, 'include' );
-            last;
-        }
-    }
-}
-
-# if we can't find it, prompt
-unless( $inc_dir ) {
-    $inc_dir = Module::Build->prompt(
-        "enter include directory to use:",
-        File::Spec->catdir($prefixes[0], 'include')
-    );
-}
-unless( $lib_dir ) {
-    $lib_dir = Module::Build->prompt(
-        "enter library directory to use:",
-        File::Spec->catdir($prefixes[0], 'lib')
-    );
-}
+my $inc_dir = $ENV{GENTOO_INCDIR};
+my $lib_dir = $ENV{GENTOO_LIBDIR};
 
+die "GENTOO_LIBDIR not set" unless $lib_dir;
+die "GENTOO_INCDIR not set" unless $inc_dir;
+
+die "No usable libwrap.so in $lib_dir" unless -e File::Spec->catfile( $lib_dir, 'libwrap.so' )
+  and -f _ and -r _;
+
+die "No usable tcpd.h in $inc_dir" unless -e File::Spec->catfile( $inc_dir, 'tcpd.h' )
+  and -f _ and -r _;
+
+warn "$0 libdir: $lib_dir\n";
+warn "$0 incdir: $inc_dir\n";
 # create the Buildfile
 Module::Build->new(
 
-- 
2.28.0