Install everything in PREFIX, set EXTRA_PATH to find it there.

--- ./Makefile.in~	2016-02-06 01:29:16.595090365 +0100
+++ ./Makefile.in	2016-02-06 09:29:04.286008931 +0100
@@ -133,9 +133,9 @@
 # require for testing here (like TCLX_LIBRARY).
 #========================================================================

-EXTRA_PATH	= $(top_builddir):$(TCL_BIN_DIR)
+EXTRA_PATH	= $(top_builddir):$(TCL_BIN_DIR):$(libdir)
 #EXTRA_PATH     = $(top_builddir):$(TCL_BIN_DIR):$(TK_BIN_DIR)
-TCLLIBPATH      = $(top_builddir)
+TCLLIBPATH      = $(pkglibdir)
 TCLSH_ENV	= TCL_LIBRARY=`@CYGPATH@ $(TCL_SRC_DIR)/library` \
 		  @LD_LIBRARY_PATH_VAR@="$(EXTRA_PATH):$(@LD_LIBRARY_PATH_VAR@)" \
 		  PATH="$(EXTRA_PATH):$(PATH)" \
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<tr><td><span title='2022-03-11 23:07:25 +0100'>2022-03-11</span></td><td><a href='/guix/commit/gnu/packages/xfig.scm?id=4e0c4ab7f962a56b1c5b023b40dbeb3e856c96f6'>gnu: transfig: Fix "multiple definition" errors with GCC 10+.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/patches/transfig-gcc10-fno-common.patch: New patch.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/xfig.scm (transfig)[source]&lt;origin&gt;: Use patch
"transfig-gcc10-fno-common.patch" to avoid "multiple definition" errors with
GCC 10+ and "-f-no-common".

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Ivan Vilata i Balaguer</td></tr>
<tr><td><span title='2022-03-11 23:07:22 +0100'>2022-03-11</span></td><td><a href='/guix/commit/gnu/packages/xfig.scm?id=db41eabd47e676b3a08ff87ceea20e0cb9f98427'>gnu: transfig: Avoid "ar" option incompatibility with binutils 2.36.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://issues.guix.gnu.org/53425&gt;.

* gnu/packages/xfig.scm (transfig)[arguments]&lt;#:phases&gt;: Remove "l" option
from "ar" invocation in makefiles to avoid incompatible meaning in binutils
2.36 causing error "ar: libdeps specified more than once".

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Ivan Vilata i Balaguer</td></tr>
<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/xfig.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>This commit was obtained by running:

  ./pre-inst-env guix style

without any additional argument.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-11-17 17:48:18 +0200'>2021-11-17</span></td><td><a href='/guix/commit/gnu/packages/xfig.scm?id=99084abd80d7c81e83263ffc6fd3699aeb8899c5'>gnu: xfig: Update to 3.2.8b.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/xfig.scm (xfig): Update to 3.2.8b.
[native-inputs]: Add ghostscript.
</span></span></td><td>Efraim Flashner</td></tr>