configure.ac

# Process this file with autoconf to produce a configure script.
AC_PREREQ(2.61)
AC_INIT([RNV], [1.7.11], [http://sourceforge.net/projects/rnv/], [rnv])
AM_INIT_AUTOMAKE([])

# Checks for programs.
AC_PROG_INSTALL
AC_PROG_CC
AC_PROG_RANLIB

# Checks for header files.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS([fcntl.h limits.h stdlib.h string.h])

UNISTD_MISSING="Neither <unistd.h> nor <io.h> could be found."
AC_CHECK_HEADER(unistd.h,[
  ## unistd.h found
  CPPFLAGS="${CPPFLAGS} -DUNISTD_H=\<unistd.h\>"
], [
  AC_CHECK_HEADER(io.h,[
    ## io.h found
    CPPFLAGS="${CPPFLAGS} -DUNISTD_H=\<io.h\>"
  ], [
    ## both headers missing
    AC_MSG_ERROR($UNISTD_MISSING)
  ])
])

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_STRUCT_TM

# Checks for library functions.
AC_FUNC_ERROR_AT_LINE
AC_FUNC_FORK
AC_FUNC_MALLOC
AC_FUNC_STRTOD
AC_FUNC_VPRINTF
AC_CHECK_FUNCS([dup2 strchr strerror strrchr strtol])



# DXL_EXC
AC_ARG_ENABLE(dxl, [
Extra options:
  --enable-dxl            enable pluggable datatypes for RNV and RVP], [
	CPPFLAGS="${CPPFLAGS} -DDXL_EXC=1"
], [])

dnl // M_STATIC
AC_ARG_ENABLE(mem-static, [  --enable-mem-static=N   work with static memory of N bytes size], [
	CPPFLAGS="${CPPFLAGS} -DM_STATIC=${enableval}"
], [])

dnl // M_FILL
AC_ARG_ENABLE(mem-fill, [  --enable-mem-fill=C     specify memory fill character, e.g. 'X'], [
	CPPFLAGS="${CPPFLAGS} -DM_FILL=${enableval}"
], [])



# Expat
AC_ARG_WITH(expat, [
Dependency locations:
  --with-expat            specify path of Expat
                          ("/lib" or "/include" is appended)], [
	LDFLAGS="${LDFLAGS} -L${withval}/lib"
	CPPFLAGS="${CPPFLAGS} -I${withval}/include"
], [])

AC_ARG_WITH(expat-inc, [  --with-expat-inc        specify include path of Expat], [
	CPPFLAGS="${CPPFLAGS} -I${withval}"
], [])

AC_ARG_WITH(expat-lib, [  --with-expat-lib        specify library path of Expat], [
	LDFLAGS="${LDFLAGS} -L${withval}"
], [])



# SCM
RNV_WITH_SCM=0
AC_ARG_WITH(scm, [  --with-scm              specify path of SCM
                          ("/lib" or "/include" is appended)], [
	LDFLAGS="${LDFLAGS} -L${withval}/lib"
	CPPFLAGS="${CPPFLAGS} -I${withval}/include"
	RNV_WITH_SCM=1
], [])

AC_ARG_WITH(scm-inc, [  --with-scm-inc          specify include path of SCM], [
	CPPFLAGS="${CPPFLAGS} -I${withval}"
	RNV_WITH_SCM=1
], [])

AC_ARG_WITH(scm-lib, [  --with-scm-lib          specify library path of SCM], [
	LDFLAGS="${LDFLAGS} -L${withval}"
	RNV_WITH_SCM=1
], [])



# Append $prefix, must come after custom paths
if test "x${prefix}" != "xNONE"; then
	WORKING_PREFIX=${prefix}
else
	WORKING_PREFIX=${ac_default_prefix}
fi
LDFLAGS="${LDFLAGS} -L${WORKING_PREFIX}/lib"
CPPFLAGS="${CPPFLAGS} -I${WORKING_PREFIX}/include"



# Test Expat
EXPAT_MISSING="Please install expat 1.2 or later.
   On a Debian-based system enter 'sudo apt-get install libexpat-dev'."
AC_CHECK_LIB(expat, XML_SetDoctypeDeclHandler,, AC_MSG_ERROR($EXPAT_MISSING))
AC_CHECK_HEADER(xmlparse.h,[
  ## xmlparse.h found
  CPPFLAGS="${CPPFLAGS} -DEXPAT_H=\<xmlparse.h\>"
], [
  AC_CHECK_HEADER(expat.h,[
    ## expat.h found
    CPPFLAGS="${CPPFLAGS} -DEXPAT_H=\<expat.h\>"
  ], [
    ## both headers missing
    AC_MSG_ERROR($EXPAT_MISSING)
  ])
])



# Test SCM
if test "${RNV_WITH_SCM}" == "1"; then
	SCM_MISSING="Please install scm.
   On a Debian-based system enter 'sudo apt-get install libscm-dev'."
	AC_CHECK_LIB(scm, main,, AC_MSG_ERROR($SCM_MISSING))
	AC_CHECK_HEADER(scm.h,, AC_MSG_ERROR($SCM_MISSING))
	
	CPPFLAGS="${CPPFLAGS} -DDSL_SCM=1 -DSCM_H=\<scm.h\>"
	LDFLAGS="$LDFLAGS -lncurses -lreadline -lX11 -lm"
fi



AC_OUTPUT(Makefile)