changes to support easy bootstraping; re-orginazation of build scripts

scripts/Libraries/giflib.build

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+source "$(dirname $0)/../lib/libem.bash"
+
+function em.configure() {
+	"${MODULE_SRCDIR}"/configure \
+		--prefix="${PREFIX}" \
+		|| exit 1
+}
+
+em.add_to_family 'Libraries'
+em.set_build_dependencies "${COMPILER}"
+em.make_all

scripts/Libraries/gmp.build

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+source "$(dirname $0)/../lib/libem.bash"
+
+function em.configure() {
+	"${MODULE_SRCDIR}"/configure \
+		--prefix="${PREFIX}" \
+		--disable-shared \
+		|| exit 1
+}
+
+# use system gcc to compile
+declare -rx CC=gcc
+declare -rx CPP=/usr/bin/cpp
+
+em.add_to_family 'Libraries'
+em.make_all
+

scripts/Libraries/libungif.build

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+source "$(dirname $0)/../lib/libem.bash"
+
+function em.configure() {
+	"${MODULE_SRCDIR}"/configure \
+		--prefix="${PREFIX}" \
+		|| exit 1
+}
+
+em.add_to_family 'Libraries'
+em.set_build_dependencies "${COMPILER}"
+em.make_all

scripts/Libraries/mpc.build

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+source "$(dirname $0)/../lib/libem.bash"
+
+function em.configure() {
+	"${MODULE_SRCDIR}"/configure \
+		--prefix="${PREFIX}" \
+		--with-gmp=$GMP_PREFIX \
+		--with-mpfr=$MPFR_PREFIX \
+		--disable-shared \
+		|| exit 1
+}
+
+# use system gcc to compile
+declare -rx CC=gcc
+
+module use 'Libraries'
+em.add_to_family 'Libraries'
+em.set_build_dependencies 'gmp' 'mpfr'
+em.make_all
+

scripts/Libraries/mpfr.build

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+source "$(dirname $0)/../lib/libem.bash"
+
+function em.configure() {
+	"${MODULE_SRCDIR}"/configure \
+		--prefix="${PREFIX}" \
+		--with-gmp=$GMP_PREFIX \
+		--disable-shared \
+		|| exit 1
+}
+
+# use system gcc to compile
+declare -rx CC=gcc
+
+module use 'Libraries'
+
+em.add_to_family 'Libraries'
+em.set_build_dependencies 'gmp'
+em.make_all

scripts/Libraries/tiff.build

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+source "$(dirname $0)/../lib/libem.bash"
+
+function em.configure() {
+	"${MODULE_SRCDIR}"/configure \
+		--prefix="${PREFIX}" \
+		|| exit 1
+}
+
+em.add_to_family 'Libraries'
+em.set_build_dependencies "${COMPILER}"
+em.make_all