Updated Developer guides (markdown)

Developer-guides.md

@@ -168,6 +168,46 @@ Install the packages `libncurses-devel` and `libreadline-devel` and compile `nnn
 
 Install plugins and use the program option `-x`.
 
+## Compile with musl libc
+
+In this example we will compile `nnn` with [netbsd-curses](https://github.com/sabotage-linux/netbsd-curses) and [musl libc](https://www.musl-libc.org/) on Ubuntu 20.04.
+
+#### Install musl
+
+    sudo apt install musl musl-dev musl-tools
+
+#### Get netbsd-curses
+
+    git clone https://github.com/sabotage-linux/netbsd-curses --depth=1
+    cd netbsd-curses
+
+#### Compile the shared and static libraries
+
+    make CC=musl-gcc CFLAGS="-O3 -Wall -fPIC" -j4 all
+    sudo cp libcurses/libcurses.so libterminfo/libterminfo.so
+    make clean
+    make CC=musl-gcc make CFLAGS=-O3 LDFLAGS=-static all-static
+    sudo cp libcurses/libcurses.a libterminfo/libterminfo.a
+
+#### Compile `nnn`
+
+    # Dynamic
+    musl-gcc -O3 -DNORL -I/path_to/netbsd-curses/libcurses -o nnn src/nnn.c -Wl,-Bsymbolic-functions -L/opt/netbsd-curses -lcurses -lterminfo
+
+    # Dynamic custom
+    musl-gcc -O3 -DNORL -DNOLOCALE -DNOMOUSE -DNOBATCH -DNOFIFO -DTOURBIN_QSORT -DNOSSN -DNOUG -DNOX11 -march=corei7 -I/path_to/netbsd-curses/libcurses -o nnn src/nnn.c -Wl,-Bsymbolic-functions -L/opt/netbsd-curses -lcurses -lterminfo
+
+    # Note: For static compilation append `--static` to the above commands
+
+    # Strip the binary
+    strip nnn
+
+#### Results
+
+      PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND       
+    18754 vaio      20   0    2076   1692    976 S   0.0   0.0   0:00.01 ./nnn -dn
+    18952 vaio      20   0    1236    840    356 S   0.0   0.0   0:00.01 ./nnn-static -dn
+
 ## Cross-compile for Android
 
 This section applies to Linux as host, Android on arm64 target and an xterm-256color terminal.