love2d.love/platform/unix/gen-makefile

#!/bin/bash
echo Generating src/Makefile.am ...
cd src
inc_current='$(srcdir)'
inc_modules="$inc_current/modules"
inc_libraries="$inc_current/libraries"

cat > Makefile.am << EOF
AM_CPPFLAGS = -I$inc_current -I$inc_modules -I$inc_libraries \$(LOVE_INCLUDES) \$(FILE_OFFSET)
AUTOMAKE_OPTIONS = subdir-objects
SUBDIRS =

if LOVE_BUILD_EXE
# LÖVE executable
bin_PROGRAMS = love
#love_LDFLAGS =
love_LDADD = liblove.la
love_SOURCES = love.cpp
endif

# libLÖVE
lib_LTLIBRARIES = liblove.la
liblove_la_LDFLAGS = -module -export-dynamic \$(LDFLAGS)
liblove_la_SOURCES = \\
EOF

find . \( \( -iname "*.c" -o -iname "*.cpp" -o -iname "*.h" -o -iname "*.lch" \) \) -exec echo '{}' \\ \; \
	| grep -v -f"../platform/unix/exclude" | head -c -3 >> Makefile.am

printf "\n\n" >> Makefile.am
cat >> Makefile.am << EOF
if !LOVE_NOMPG123
liblove_la_SOURCES += \\
./modules/sound/lullaby/Mpg123Decoder.cpp \\
./modules/sound/lullaby/Mpg123Decoder.h
endif
EOF

cd ..
echo "src/Makefile.am is updated! ^.^"