Add autoconf files for better cross-platform compilation

.gitignore

@@ -1,2 +1,7 @@
 doc
+config.log
+config.status
+autom4te.cache
+Makefile
+priv/Makefile
 

Makefile.in

@@ -1,6 +1,12 @@
-ERL=erl
+ERL=@ERL@
+ERL_KERNEL=@ERLANG_LIB_DIR_kernel@
+ERL_STDLIB=@ERLANG_LIB_DIR_stdlib@
+ERL_CRYPTO=@ERLANG_LIB_DIR_crypto@
+ERL_COMPILER=@ERLANG_LIB_DIR_compiler@
+ERL_HIPE=@ERLANG_LIB_DIR_hipe@
+ERL_SYNTAX_TOOLS=@ERLANG_LIB_DIR_syntax_tools@
 OTP_TOP=/usr/lib/erlang/lib
-PLT_SRC=$(OTP_TOP)/kernel-2.12.5/ebin $(OTP_TOP)/stdlib-1.15.5/ebin/ $(OTP_TOP)/crypto-1.5.3/ebin $(OTP_TOP)/compiler-4.5.5/ebin $(OTP_TOP)/hipe-3.6.9/ebin/ $(OTP_TOP)/syntax_tools-1.5.6/ebin $(OTP_TOP)/hipe-3.6.9/ebin ebin
+PLT_SRC=$(ERL_KERNEL)/ebin $(ERL_STDLIB)/ebin/ $(ERL_CRYPTO)/ebin $(ERL_COMPILER)/ebin $(ERL_HIPE)/ebin/ $(ERL_SYNTAX_TOOLS)/ebin ebin
 
 all: compile docs
 

configure.ac

@@ -0,0 +1,45 @@
+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.63])
+AC_INIT([FULL-PACKAGE-NAME], [VERSION], [BUG-REPORT-ADDRESS])
+AC_CONFIG_SRCDIR([priv/erl_comm.c])
+#AC_CONFIG_HEADERS([config.h])
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_MAKE_SET
+
+## Checks for libraries.
+## FIXME: Replace `main' with a function in `-lei':
+#AC_CHECK_LIB([ei], [main])
+## FIXME: Replace `main' with a function in `-lerl_interface':
+#AC_CHECK_LIB([erl_interface], [main])
+## FIXME: Replace `main' with a function in `-lsqlite3':
+#AC_CHECK_LIB([sqlite3], [main])
+
+# Checks for header files.
+AC_CHECK_HEADERS([stdlib.h string.h unistd.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_C_INLINE
+
+# Checks for library functions.
+AC_FUNC_MALLOC
+AC_FUNC_REALLOC
+AC_CHECK_FUNCS([bzero strstr])
+
+AC_ERLANG_NEED_ERLC
+AC_ERLANG_SUBST_ROOT_DIR
+AC_ERLANG_SUBST_LIB_DIR
+AC_ERLANG_CHECK_LIB(erl_interface)
+AC_ERLANG_CHECK_LIB(kernel)
+AC_ERLANG_CHECK_LIB(stdlib)
+AC_ERLANG_CHECK_LIB(crypto)
+AC_ERLANG_CHECK_LIB(compiler)
+AC_ERLANG_CHECK_LIB(hipe)
+AC_ERLANG_CHECK_LIB(syntax_tools)
+
+AC_CONFIG_FILES([Makefile
+                 priv/Makefile])
+AC_OUTPUT

priv/Makefile

@@ -1,14 +0,0 @@
-GCC=gcc
-LDFLAGS=-shared -L/usr/local/lib -lsqlite3 -bundle -flat_namespace -undefined suppress -fPIC -lerl_interface -L/usr/local/lib/erlang/lib/erl_interface-3.6.1/lib -lei
-SRCS=sqlite3_drv.c sqlite3_drv.h
-OUTPUT=sqlite3_drv.so
-CFLAGS=-o ../ebin/${OUTPUT} -I/usr/local/lib/erlang/usr/include/ -I/usr/local/lib/erlang/lib/erl_interface-3.6.1/include/ -arch x86_64
-
-all: ../ebin/${OUTPUT}
-
-
-../ebin/${OUTPUT}: sqlite3_drv.c sqlite3_drv.h
-	${GCC} sqlite3_drv.c ${LDFLAGS} ${CFLAGS}
-
-clean:
-	rm -rf ${OUTPUT}

priv/Makefile.in

@@ -0,0 +1,16 @@
+ERL_INTERFACE=@ERLANG_LIB_DIR_erl_interface@
+ERL_ROOT=@ERLANG_ROOT_DIR@
+GCC=gcc
+LDFLAGS=-shared -L/usr/lib -lsqlite3 -undefined -fPIC -lerl_interface -L$(ERL_INTERFACE)/lib -lei
+SRCS=sqlite3_drv.c sqlite3_drv.h
+OUTPUT=sqlite3_drv.so
+CFLAGS=-o ../ebin/${OUTPUT} -I$(ERL_ROOT)/usr/include/ -I$(ERL_INTERFACE)/include/ 
+
+all: ../ebin/${OUTPUT}
+
+
+../ebin/${OUTPUT}: sqlite3_drv.c sqlite3_drv.h
+	${GCC} sqlite3_drv.c ${LDFLAGS} ${CFLAGS}
+
+clean:
+	rm -rf ../ebin/${OUTPUT}