Purity: don't look for library dependencies (of the form `-lfoo') in
/lib and /usr/lib.  Likewise, when searching for included Makefiles,
don't look in /usr/include and friends.

Patch from Nixpkgs, by Eelco Dolstra.

diff -rc make-3.81-orig/read.c make-3.81/read.c
*** make-3.81-orig/read.c	2006-03-17 15:24:20.000000000 +0100
--- make-3.81/read.c	2007-05-24 17:16:31.000000000 +0200
***************
*** 99,107 ****
--- 99,109 ----
  #endif
      INCLUDEDIR,
  #ifndef _AMIGA
+ #if 0    
      "/usr/gnu/include",
      "/usr/local/include",
      "/usr/include",
+ #endif    
  #endif
      0
    };
diff -rc make-3.81-orig/remake.c make-3.81/remake.c
*** make-3.81-orig/remake.c	2006-03-20 03:36:37.000000000 +0100
--- make-3.81/remake.c	2007-05-24 17:06:54.000000000 +0200
***************
*** 1452,1460 ****
--- 1452,1462 ----
    static char *dirs[] =
      {
  #ifndef _AMIGA
+ #if 0
        "/lib",
        "/usr/lib",
  #endif
+ #endif
  #if defined(WINDOWS32) && !defined(LIBDIR)
  /*
   * This is completely up to the user at product install time. Just define
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<div class='path'>path: <a href='/guix/log/?id=47f31c0afec855e3158beb7467f9f20dcae02031'>root</a>/<a href='/guix/log/config-daemon.ac?id=47f31c0afec855e3158beb7467f9f20dcae02031'>config-daemon.ac</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/config-daemon.ac?id=47f31c0afec855e3158beb7467f9f20dcae02031&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-12-11 19:06:53 +0100'>2020-12-11</span></td><td><a href='/guix/commit/config-daemon.ac?id=26b1030012837ff3f91d2a39971358180324d730'>maint: Remove unused 'NIX_VERSION' macro.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-12-11 19:06:53 +0100'>2020-12-11</span></td><td><a href='/guix/commit/config-daemon.ac?id=dbdae9f96f11a006993b659e0e7fd5cbf467f844'>maint: Avoid macros obsolete in Autoconf 2.70.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-11-27 00:03:03 +0100'>2019-11-27</span></td><td><a href='/guix/commit/config-daemon.ac?id=7738a72186583afb3bb2e0a866c8aba130372400'>daemon: GC remove-unused-links phase uses 'statx' when available.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-11-13 23:26:35 +0100'>2019-11-13</span></td><td><a href='/guix/commit/config-daemon.ac?id=298fb2907e3f432cea7dee9f58e89ab8d9dbd56f'>daemon: Don't include &lt;linux/fs.h&gt;.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-09-08 11:49:24 +0200'>2019-09-08</span></td><td><a href='/guix/commit/config-daemon.ac?id=f6919ebdc6b0ce0286814cc6ab0564b1a4c67f5f'>daemon: Run 'guix substitute' directly and assume a single substituter.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-09-08 11:49:24 +0200'>2019-09-08</span></td><td><a href='/guix/commit/config-daemon.ac?id=bc69ea2d605810cc32e13ed03d5848b8dc358b61'>daemon: Run 'guix offload' directly.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-09-08 11:49:24 +0200'>2019-09-08</span></td><td><a href='/guix/commit/config-daemon.ac?id=9fcc35c51fd579b3bb7b4f61cba6973675c3922c'>daemon: Run 'guix perform-download' directly.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-09-08 11:49:24 +0200'>2019-09-08</span></td><td><a href='/guix/commit/config-daemon.ac?id=0c684b7edfacada4f576855dbb09291f04a84fa2'>daemon: Run 'guix authenticate' directly.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-09-08 11:49:24 +0200'>2019-09-08</span></td><td><a href='/guix/commit/config-daemon.ac?id=2e3e5d21988fc2cafb2a9eaf4b00976ea425629d'>daemon: Invoke 'guix gc --list-busy' instead of 'list-runtime-roots'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-05-01 11:05:47 +0200'>2019-05-01</span></td><td><a href='/guix/commit/config-daemon.ac?id=757e633d57a7b994759d69e41dd759a39f1a34ae'>build: Change default substitute server to "ci.guix.gnu.org".</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-12-04 10:57:56 +0100'>2018-12-04</span></td><td><a href='/guix/commit/config-daemon.ac?id=0a5fa004f7f21dc3e01747b8e94fbb21e056e4ca'>build: Default to https://ci.guix.info for substitutes.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-11-14 21:34:08 +0100'>2018-11-14</span></td><td><a href='/guix/commit/config-daemon.ac?id=0fe1fba4af41f267c4bb2c006fb37f42422ab703'>daemon: Install 'authenticate' script under LIBEXECDIR/guix.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-09-06 10:59:32 +0200'>2018-09-06</span></td><td><a href='/guix/commit/config-daemon.ac?id=888b64038db00c73467a05320c7c7f03070e5621'>build: Remove -L flag when $LIBGCRYPT_LIBDIR is empty.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-03-05 10:41:18 +0100'>2018-03-05</span></td><td><a href='/guix/commit/config-daemon.ac?id=bdbece905538caf68817066126cb9b6b68ba9fd4'>build: Default to berlin.guixsd.org substitutes on aarch64.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-03-05 10:41:18 +0100'>2018-03-05</span></td><td><a href='/guix/commit/config-daemon.ac?id=234d7ef567bd98ace98dd784472f19d2ee84f73d'>build: Always use https substitute URLs.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>