# Required initializer
AC_INIT

AM_INIT_AUTOMAKE(nss_compat_ossl, 1.0)

# Find the compiler

# We want these before the checks, so the checks can modify their values.
test -z "$CFLAGS"  && CFLAGS= auto_cflags=1
test -z "$CC" && cc_specified=yes

AC_PROG_CC
AC_PROG_LIBTOOL

# Check for typedefs, structures, and compiler characteristics.
AC_C_CONST

# Check for header files
AC_HEADER_STDC
AC_CHECK_HEADERS( \
unistd.h
)

AC_CHECKING(for NSPR)

# check for --with-nspr
AC_MSG_CHECKING(for --with-nspr)
AC_ARG_WITH(nspr, [  --with-nspr=PATH        Netscape Portable Runtime (NSPR) directory],
[
  if test -e "$withval"/include/nspr.h -a -d "$withval"/lib
  then
    AC_MSG_RESULT([using $withval])
    NSPRDIR=$withval
    nspr_inc="-I$NSPRDIR/include"
    nspr_lib="-L$NSPRDIR/lib"
  else
    echo
    AC_MSG_ERROR([$withval not found])
  fi
],
AC_MSG_RESULT(no))

# check for --with-nspr-inc
AC_MSG_CHECKING(for --with-nspr-inc)
AC_ARG_WITH(nspr-inc, [  --with-nspr-inc=PATH    Netscape Portable Runtime (NSPR) include file directory],
[
  if test -e "$withval"/nspr.h
  then
    AC_MSG_RESULT([using $withval])
    nspr_inc="-I$withval"
  else
    echo
    AC_MSG_ERROR([$withval not found])
  fi
],
AC_MSG_RESULT(no))

# check for --with-nspr-lib
AC_MSG_CHECKING(for --with-nspr-lib)
AC_ARG_WITH(nspr-lib, [  --with-nspr-lib=PATH    Netscape Portable Runtime (NSPR) library directory],
[
  if test -d "$withval"
  then
    AC_MSG_RESULT([using $withval])
    nspr_lib="-L$withval"
  else
    echo
    AC_MSG_ERROR([$withval not found])
  fi
],
AC_MSG_RESULT(no))

# if NSPR is not found yet, try pkg-config

# last resort
if test -z "$nspr_inc" -o -z "$nspr_lib"; then
  AC_MSG_CHECKING(for nspr with pkg-config)
  AC_PATH_PROG(PKG_CONFIG, pkg-config)
  if test -n "$PKG_CONFIG"; then
    if $PKG_CONFIG --exists nspr; then
      nspr_inc=`$PKG_CONFIG --cflags-only-I nspr`
      nspr_libdir=`$PKG_CONFIG --libs-only-L nspr`
      nspr_libs=`$PKG_CONFIG --libs nspr`
      nspr_lib="${nspr_libdir} ${nspr_libs}"
    else
      AC_MSG_ERROR([NSPR not found, specify with --with-nspr.])
    fi
  fi
fi

AC_CHECKING(for NSS)

# check for --with-nss
AC_MSG_CHECKING(for --with-nss)
AC_ARG_WITH(nss, [  --with-nss=PATH         Network Security Services (NSS) directory],
[
  if test -e "$withval"/include/nss.h -a -d "$withval"/lib
  then
    AC_MSG_RESULT([using $withval])
    NSSDIR=$withval
    nss_inc="-I$NSSDIR/include"
    nss_lib="-L$NSSDIR/lib"
  else
    echo
    AC_MSG_ERROR([$withval not found])
  fi
],
AC_MSG_RESULT(no))

# check for --with-nss-inc
AC_ARG_WITH(nss-inc, [  --with-nss-inc=PATH     Network Security Services (NSS) include directory],
[
  if test -e "$withval"/nss.h
  then
    AC_MSG_RESULT([using $withval])
    nss_inc="-I$withval"
  else
    echo
    AC_MSG_ERROR([$withval not found])
  fi
],
AC_MSG_RESULT(no))

# check for --with-nss-lib
AC_MSG_CHECKING(for --with-nss-lib)
AC_ARG_WITH(nss-lib, [  --with-nss-lib=PATH     Network Security Services (NSS) library directory],
[
  if test -d "$withval"
  then
    AC_MSG_RESULT([using $withval])
    nss_lib="-L$withval"
  else
    echo
    AC_MSG_ERROR([$withval not found])
  fi
],
AC_MSG_RESULT(no))

# if NSS is not found yet, try pkg-config

# last resort
if test -z "$nss_inc" -o -z "$nss_lib"; then
  AC_MSG_CHECKING(for nss with pkg-config)
  AC_PATH_PROG(PKG_CONFIG, pkg-config)
  if test -n "$PKG_CONFIG"; then
    if $PKG_CONFIG --exists nss; then
      nss_inc=`$PKG_CONFIG --cflags-only-I nss`
      nss_libdir=`$PKG_CONFIG --libs-only-L nss`
      nss_libs=`$PKG_CONFIG --libs nss`
      nss_lib="${nss_libdir} ${nss_libs}"
    else
      AC_MSG_ERROR([NSS not found, specify with --with-nss.])
    fi
  fi
fi

# Substitute values 
AC_SUBST(nspr_inc)
AC_SUBST(nspr_lib)
AC_SUBST(nss_inc)
AC_SUBST(nss_lib)

# Write config.status and the Makefile
AC_OUTPUT(Makefile src/Makefile)