diff -dur psycopg-1.1.11.orig/aclocal.m4 psycopg-1.1.11/aclocal.m4
--- psycopg-1.1.11.orig/aclocal.m4	2003-12-18 23:08:23.000000000 +0100
+++ psycopg-1.1.11/aclocal.m4	2004-02-18 11:17:39.919319805 +0100
@@ -107,7 +107,7 @@
 AC_REQUIRE([PY_PYTHON_EXEC_PREFIX])
 AC_MSG_CHECKING(definitions in Python library makefile)
 AC_CACHE_VAL(py_cv_python_makefile_vars,
-[py_makefile="${PYTHON_EXEC_PREFIX}/lib/python${PYTHON_VERSION}/config/Makefile"
+[py_makefile="${PYTHON_EXEC_PREFIX}/lib64/python${PYTHON_VERSION}/config/Makefile"
 dnl set defaults for these variables so they work with Python 1.4
 py_cv_python_makefile_LINKCC=''
 py_cv_python_makefile_SGI_ABI=''
@@ -192,8 +192,8 @@
 AC_DEFUN(PY_CHECK_INSTALL,
 [AC_REQUIRE([PY_PYTHON_VERSION])
 AC_REQUIRE([PY_PYTHON_EXEC_PREFIX])
-if test -x "$PYTHON_EXEC_PREFIX/lib/python$PYTHON_VERSION/config/install-sh"; then
-  INSTALL="$PYTHON_EXEC_PREFIX/lib/python$PYTHON_VERSION/config/install-sh"
+if test -x "$PYTHON_EXEC_PREFIX/lib64/python$PYTHON_VERSION/config/install-sh"; then
+  INSTALL="$PYTHON_EXEC_PREFIX/lib64/python$PYTHON_VERSION/config/install-sh"
   AC_SUBST(INSTALL)
 else
   AC_PATH_PROG(INSTALL, install, install)
@@ -212,8 +212,8 @@
 sp = list(())
 for p in sys.path:
   sp.append(os.path.normpath(p))
-for dir in ('/lib/site-python', '/lib/python${PYTHON_VERSION}/site-packages',
-      '/lib/python${PYTHON_VERSION}'):
+for dir in ('/lib64/site-python', '/lib64/python${PYTHON_VERSION}/site-packages',
+      '/lib64/python${PYTHON_VERSION}'):
   p = os.path.normpath(sys.prefix+dir)
   if os.path.isdir(p) and p in sp:
     print dir
@@ -233,11 +233,11 @@
 AC_CACHE_VAL(py_cv_python_module_dir, dnl
 [py_cv_python_module_dir=`$PYTHON -c "
 import sys, os
-for dir in ('/lib/python${PYTHON_VERSION}/site-packages',
-            '/lib/python${PYTHON_VERSION}/lib-dynload',
-            '/lib/python${PYTHON_VERSION}/sharedmodules',
-            '/lib/site-python',
-            '/lib/python${PYTHON_VERSION}'):
+for dir in ('/lib64/python${PYTHON_VERSION}/site-packages',
+            '/lib64/python${PYTHON_VERSION}/lib-dynload',
+            '/lib64/python${PYTHON_VERSION}/sharedmodules',
+            '/lib64/site-python',
+            '/lib64/python${PYTHON_VERSION}'):
   if os.path.isdir(sys.exec_prefix+dir) and (sys.exec_prefix+dir) in sys.path:
     print dir
     break"`])
@@ -256,7 +256,7 @@
 AC_OUTPUT($2 $3 $1.pre,dnl
 [echo creating $1
 $MAKESETUP -m $1.pre -c - $2],dnl
-[MAKESETUP="${PYTHON_EXEC_PREFIX}/lib/python${PYTHON_VERSION}/config/makesetup"
+[MAKESETUP="${PYTHON_EXEC_PREFIX}/lib64/python${PYTHON_VERSION}/config/makesetup"
 ])
 ])
 
Only in psycopg-1.1.11: aclocal.m4~