update INSTALL file to reflect configure script usage

diff --git a/INSTALL b/INSTALL
index 5b58693..f39d627 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -36,9 +36,16 @@ to compile and link programs and libraries against musl.
 
 To install musl as an alternate libc, follow these steps:
 
 
 To install musl as an alternate libc, follow these steps:
 

-1. Edit config.mak to select your system's CPU architecture (i386,
-   x86_64, or arm), installation prefix, location for the dynamic
-   linker, and other build preferences.
+1. Configure musl's build with a command similar to:
+   ./configure --prefix=/usr/local/musl --exec-prefix=/usr/local
+   Refer to ./configure --help for details on other options. You may
+   change the install prefix if you like, but DO NOT set it to a
+   location that contains your existing libraries based on another
+   libc such as glibc or uClibc. If you do not intend to use dynamic
+   linking, you may disable it at this point via --disable-shared and
+   cut the build time in half. If you wish to use dynamic linking but
+   do not have permissions to write to /lib, you will need to set an
+   alternate dynamic linker location via --syslibdir.

 
 2. Run "make". Parallel build is fully supported, so you can instead
    use "make -j3" or so on SMP systems if you like.
 
 2. Run "make". Parallel build is fully supported, so you can instead
    use "make -j3" or so on SMP systems if you like.


@@ -46,10 +53,13 @@ To install musl as an alternate libc, follow these steps:
 3. Run "make install" as a user sufficient privileges to write to the
    destination.
 
 3. Run "make install" as a user sufficient privileges to write to the
    destination.
 

-4. Ensure that /etc/ld-musl-$ARCH.path (where $ARCH is replaced by
-   i386, x86_64, etc. as appropriate) contains the correct search path
-   for where you intend to install musl-linked shared library files.
-   This step can be skipped if you disabled dynamic linking.
+4. Create a file named /etc/ld-musl-$ARCH.path (where $ARCH is
+   replaced by i386, x86_64, etc. as appropriate) containing the
+   correct colon-delimited search path for where you intend to install
+   musl-linked shared library files. If this file is missing, musl
+   will search the standard path, and you will encounter problems when
+   it attempts to load libraries linked against your host libc. Note
+   that this step can be skipped if you disabled dynamic linking.

 
 After installing, you can use musl via the musl-gcc wrapper. For
 example:
 
 After installing, you can use musl via the musl-gcc wrapper. For
 example:


@@ -81,8 +91,9 @@ main host system library directories.
 
 Finally, it's worth noting that musl's include and lib directories in
 the build tree are setup to be usable without installation, if
 
 Finally, it's worth noting that musl's include and lib directories in
 the build tree are setup to be usable without installation, if

-necessary. Just modify the musl-gcc wrapper's libc_prefix variable to
-point to the source/build tree.
+necessary. Just modify the the paths in the spec file used by musl-gcc
+(it's located at $prefix/lib/musl-gcc.specs) to point to the
+source/build tree.

 
 
 
 
 
 


@@ -107,10 +118,9 @@ TO CONVERT IT TO BE A MUSL-BASED SYSTEM!!
    the search path before you move them, or your system will break
    badly and you will not be able to continue.
 
    the search path before you move them, or your system will break
    badly and you will not be able to continue.
 

-2. Edit musl's config.mak and set the installation prefix to the
-   prefix your compiler toolchain is configured to search, probably
-   /usr. Set ARCH to match your CPU architecture, and change any other
-   options as you see fit.
+2. Configure musl's build with a command similar to:
+   ./configure --prefix=/usr --disable-gcc-wrapper
+   Refer to ./configure --help for details on other options.

 
 3. Run "make" to compile musl.
 
 
 3. Run "make" to compile musl.