diff --git a/.gitignore b/.gitignore
index 21285183..cff0f4c0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 /doc/
 /build/
+/Makefile
+/config.stamp
diff --git a/.travis.yml b/.travis.yml
index 4bad3895..737a55c2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ install:
   - sudo apt-get install rust-nightly
 before_script:
   - ./travis/setup.sh
+  - ./configure
 script:
   - make all check doc
 after_success:
diff --git a/Makefile b/Makefile
deleted file mode 100644
index b6abf7ac..00000000
--- a/Makefile
+++ /dev/null
@@ -1,50 +0,0 @@
-export RUSTC = rustc
-BUILDDIR = build
-export RUSTFLAGS = -O -Z debug-info
-
-POSTGRES_LIB = lib.rs
-POSTGRES = $(BUILDDIR)/$(shell $(RUSTC) --crate-file-name $(POSTGRES_LIB))
-POSTGRES_TEST = $(BUILDDIR)/$(shell $(RUSTC) --test --crate-file-name $(POSTGRES_LIB))
-OPENSSL_DIR = submodules/rust-openssl
-OPENSSL = $(OPENSSL_DIR)/$(shell $(MAKE) -s -C $(OPENSSL_DIR) print-target)
-PHF_DIR = submodules/rust-phf
-PHF = $(PHF_DIR)/$(shell $(MAKE) -s -C $(PHF_DIR) print-targets)
-LINK_ARGS = -L $(dir $(OPENSSL)) $(foreach file,$(PHF),-L $(dir $(file)))
-
-all: $(POSTGRES)
-
--include $(BUILDDIR)/postgres.d
--include $(BUILDDIR)/postgres_test.d
-
-$(BUILDDIR):
-	mkdir -p $@
-
-$(BUILDDIR)/submodule-trigger: submodules/submodule-trigger | $(BUILDDIR)
-	git submodule init
-	git submodule update
-	touch $@
-
-$(OPENSSL): $(BUILDDIR)/submodule-trigger | $(BUILDDIR)
-	$(MAKE) -C $(OPENSSL_DIR)
-
-$(PHF): $(BUILDDIR)/submodule-trigger | $(BUILDDIR)
-	$(MAKE) -C $(PHF_DIR)
-
-$(POSTGRES): $(POSTGRES_LIB) $(OPENSSL) $(PHF) | $(BUILDDIR)
-	$(RUSTC) $(RUSTFLAGS) --dep-info $(@D)/postgres.d --out-dir $(@D) \
-		$(LINK_ARGS) $<
-
-$(POSTGRES_TEST): $(POSTGRES_LIB) $(OPENSSL) $(PHF) | $(BUILDDIR)
-	$(RUSTC) $(RUSTFLAGS) --dep-info $(@D)/postgres_test.d --out-dir $(@D) \
-		$(LINK_ARGS) --test $<
-
-check: $(POSTGRES_TEST)
-	$<
-
-clean:
-	rm -rf $(BUILDDIR)
-
-doc: $(OPENSSL) $(PHF)
-	rustdoc $(LINK_ARGS) $(POSTGRES_LIB)
-
-.PHONY: all check clean
diff --git a/Makefile.in b/Makefile.in
new file mode 100644
index 00000000..18c08195
--- /dev/null
+++ b/Makefile.in
@@ -0,0 +1,93 @@
+export RUSTC = rustc
+RUSTDOC = rustdoc
+export RUSTFLAGS = -O -Z debug-info
+BUILDDIR = build
+INSTALL_DIR = %PREFIX%
+
+###############################################################################
+# Reconfiguration
+###############################################################################
+CONFIGURE_ARGS = %CONFIGURE_ARGS%
+
+NEED_GIT_RECONFIG = $(shell git submodule status | grep -c '^\(+|-\)')
+
+ifeq ($(NEED_GIT_RECONFIG),0)
+else
+.PHONY: config.stamp
+endif
+
+Makefile: config.stamp
+
+config.stamp: configure Makefile.in
+	./configure $(CONFIGURE_ARGS)
+
+###############################################################################
+# Dependencies
+###############################################################################
+PHF_DIR = submodules/rust-phf
+PHF = $(foreach file,$(shell $(MAKE) -s -C $(PHF_DIR) print-targets),$(PHF_DIR)/$(file))
+OPENSSL_DIR = submodules/rust-openssl
+OPENSSL = $(OPENSSL_DIR)/$(shell $(MAKE) -s -C $(OPENSSL_DIR) print-target)
+
+$(PHF): config.stamp
+	$(MAKE) -C $(PHF_DIR)
+	touch $(PHF)
+
+$(OPENSSL): config.stamp
+	$(MAKE) -C $(OPENSSL_DIR)
+	touch $(OPENSSL)
+
+###############################################################################
+# Main targets
+###############################################################################
+POSTGRES_LIB_FILE = lib.rs
+POSTGRES_LIB = $(BUILDDIR)/$(shell $(RUSTC) --crate-file-name $(POSTGRES_LIB_FILE))
+POSTGRES_TEST = $(BUILDDIR)/$(shell $(RUSTC) --test --crate-file-name $(POSTGRES_LIB_FILE))
+
+POSTGRES_LIB_DEPS = $(BUILDDIR)/postgres.d
+POSTGRES_TEST_DEPS = $(BUILDDIR)/postgres_test.d
+
+LINK_ARGS = -L $(dir $(OPENSSL)) $(foreach file,$(PHF),-L $(dir $(file)))
+
+-include $(POSTGRES_LIB_DEPS)
+-include $(POSTGRES_TEST_DEPS)
+
+$(BUILDDIR):
+	mkdir -p $@
+
+$(POSTGRES_LIB): $(POSTGRES_LIB_FILE) $(PHF) $(OPENSSL) | $(BUILDDIR)
+	$(RUSTC) $(RUSTFLAGS) $(LINK_ARGS) --dep-info $(POSTGRES_LIB_DEPS) \
+		--out-dir $(@D) $<
+
+$(POSTGRES_TEST): $(POSTGRES_LIB_FILE) $(PHF) $(OPENSSL) | $(BUILDDIR)
+	$(RUSTC) $(RUSTFLAGS) $(LINK_ARGS) --dep-info $(POSTGRES_TEST_DEPS) \
+		--out-dir $(@D) --test $<
+
+all: $(POSTGRES_LIB)
+
+.DEFAULT_GOAL := all
+.PHONY: all
+
+###############################################################################
+# Utility
+###############################################################################
+
+check: $(POSTGRES_TEST)
+	$(POSTGRES_TEST)
+
+clean:
+	rm -rf $(BUILDDIR)
+
+clean-deps:
+	$(MAKE) -C $(PHF_DIR) clean
+	$(MAKE) -C $(OPENSSL_DIR) clean
+
+doc: $(OPENSSL) $(PHF)
+	$(RUSTDOC) $(LINK_ARGS) $(POSTGRES_LIB_FILE)
+
+install: $(POSTGRES_LIB)
+	$(MAKE) -C $(PHF_DIR) install INSTALL_DIR=$(abspath $(INSTALL_DIR))
+	$(MAKE) -C $(PHF_DIR) install INSTALL_DIR=$(abspath $(INSTALL_DIR))
+	install $(POSTGRES_LIB) $(INSTALL_DIR)
+
+.PHONY: check clean doc install
diff --git a/configure b/configure
new file mode 100755
index 00000000..472ffec4
--- /dev/null
+++ b/configure
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+set -e
+
+TEMP=`getopt -o "" --long prefix: -n "$0" -- "$@"`
+CONFIGURE_ARGS=$@
+
+if [ $? != 0 ]; then exit 1; fi
+
+eval set -- "$TEMP"
+
+PREFIX=/usr/lib
+
+while true ; do
+    case "$1" in
+        --prefix) PREFIX=$2; shift 2;;
+        --) shift; break;;
+    esac
+done
+
+git submodule update --init
+./submodules/rust-phf/configure
+./submodules/rust-openssl/configure
+
+sed -e "s|%PREFIX%|$PREFIX|" \
+    -e "s|%CONFIGURE_ARGS%|$CONFIGURE_ARGS|" \
+    < Makefile.in > Makefile
+
+touch config.stamp
diff --git a/submodules/rust-openssl b/submodules/rust-openssl
index 37240b51..22e687d8 160000
--- a/submodules/rust-openssl
+++ b/submodules/rust-openssl
@@ -1 +1 @@
-Subproject commit 37240b51f5c45f6d585b6ae0406eff6802dd6c17
+Subproject commit 22e687d80163def8a7cec28a9fd23a522105272a
diff --git a/submodules/rust-phf b/submodules/rust-phf
index 52308219..5149d97e 160000
--- a/submodules/rust-phf
+++ b/submodules/rust-phf
@@ -1 +1 @@
-Subproject commit 52308219d41adc8fb8a8326b03bffda8f0a20ba3
+Subproject commit 5149d97ea8859449edff5bd0248cddc5edbdc5a1