Include directive. Variable assignment from environment

1 files changed, 64 insertions, 0 deletions

diff --git a/configure b/configure
new file mode 100755
index 0000000..4fe0876
--- /dev/null
+++ b/configure
@@ -0,0 +1,64 @@
+#!/bin/sh -e
+
+#
+# This file is part of musl-mod: modified version of Musl libc library.
+# musl-mod in general and this file specifically are available under
+# MIT license. See COPYRIGHT file.
+#
+
+defined() {
+    [ x"$2" = x ] && echo $1 is undefined && exit 1
+    echo $1 = $2
+}
+
+pexec() {
+    echo $@
+    $@
+}
+
+print_help() {
+    cat <<EOF
+$0: configuration script for compiling musl
+  --help           print this help
+  --prefix=<dir>   directory where to install musl
+EOF
+    exit 0
+}
+
+prefix=/tmp
+
+for arg; do
+    case $arg in
+    --prefix=*)
+        prefix=${arg#--prefix=}
+        ;;
+    --help)
+        print_help
+        ;;
+    *)
+        echo $args: unknown argument && exit 1
+        ;;
+    esac
+done
+
+: ${CC:=gcc}
+: ${LD:=ld}
+
+arch=x86_64
+
+gcc_prefix=$(dirname $(gcc -print-libgcc-file-name))
+
+tool_cflags="-Wall -nostdinc -Wno-main \
+		-ffreestanding -fno-pic -fno-stack-protector \
+		-Igenerated/include -Iarch/$arch \
+		-I${gcc_prefix}/include -Iarch/generic"
+
+cflags="$tool_cflags $CFLAGS"
+
+echo prefix = $prefix >config.mk
+
+[ -f tools/musl-make ] && exit 0
+
+pexec $CC $cflags -c -o tools/common.o tools/common.c
+pexec $CC $cflags -c -o tools/musl-make.o tools/musl-make.c
+pexec $LD -nostdlib -o tools/musl-make tools/musl-make.o tools/common.o