diff --git a/.gitignore b/.gitignore
index 4c4c039e..1639dd47 100644
--- a/.gitignore
+++ b/.gitignore
@@ -47,3 +47,4 @@ stamp-h1
 /ltmain.sh
 /libtool
 /test-driver
+/g6k.egg-info/
diff --git a/kernel/g6k_config.h.in b/kernel/g6k_config.h.in
index a015e31f..bb94da9a 100644
--- a/kernel/g6k_config.h.in
+++ b/kernel/g6k_config.h.in
@@ -88,9 +88,6 @@
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
 
-/* Define to 1 if you have the <memory.h> header file. */
-#undef HAVE_MEMORY_H
-
 /* Define to 1 to support Multimedia Extensions */
 #undef HAVE_MMX
 
@@ -136,6 +133,9 @@
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
+/* Define to 1 if you have the <stdio.h> header file. */
+#undef HAVE_STDIO_H
+
 /* Define to 1 if you have the <stdlib.h> header file. */
 #undef HAVE_STDLIB_H
 
@@ -191,7 +191,9 @@
    your system. */
 #undef PTHREAD_CREATE_JOINABLE
 
-/* Define to 1 if you have the ANSI C header files. */
+/* Define to 1 if all of the C90 standard headers exist (not just the ones
+   required in a freestanding environment). This macro is provided for
+   backward compatibility; new code need not use it. */
 #undef STDC_HEADERS
 
 /* enable templated dimensions */
diff --git a/setup.py b/setup.py
index 09d24c4d..89c6d4de 100755
--- a/setup.py
+++ b/setup.py
@@ -39,12 +39,23 @@
 # `setup,py` consumes files output by `configure` so we insist on running it first.
 #
 
+if "CONDA_PREFIX" in os.environ:
+    prefix = os.environ["CONDA_PREFIX"]
+elif "VIRTUAL_ENV" in os.environ:
+    prefix = os.environ["VIRTUAL_ENV"]
+elif "LD_LIBRARY_PATH" in os.environ and os.environ["LD_LIBRARY_PATH"].endswith("/lib"):
+    prefix = os.environ["LD_LIBRARY_PATH"][:-4]
+else:
+    prefix = None
+
 if not os.path.exists("configure"):
     subprocess.check_call(["autoreconf", "-i"])
 
 if not os.path.exists("Makefile"):
-    subprocess.check_call("./configure")
-
+    if prefix:
+        subprocess.check_call(["./configure", f"--prefix={prefix}"])
+    else:
+        subprocess.check_call("./configure")
 
 #
 # But we only run `make` as part of `build_ext`
@@ -83,6 +94,8 @@ def read_from(filename, field, sep):
 # extra_compile_args += ["-DCYTHON_TRACE=1"]
 # there's so many warnings generated here, we need to filter out -Werror
 extra_compile_args += [opt for opt in read_from("g6k.pc", "Cflags", ": ") if opt != "-Werror"]
+if prefix:
+    extra_compile_args += [f"-L{prefix}/lib"]
 
 kwds = {
     "language": "c++",
@@ -96,6 +109,10 @@ def read_from(filename, field, sep):
     "include_dirs": [numpy.get_include()],
 }
 
+if prefix:
+    kwds["library_dirs"] = [f"{prefix}/lib"]
+
+
 extensions = [
     Extension("g6k.siever", ["g6k/siever.pyx"], **kwds),
     Extension("g6k.siever_params", ["g6k/siever_params.pyx"], **kwds),