AC_PREREQ([2.61])

AC_INIT([adcli],
	[0.9.2],
	[https://gitlab.freedesktop.org/realmd/adcli/issues/new],
	[adcli],
	[https://gitlab.freedesktop.org/realmd/adcli])

AC_USE_SYSTEM_EXTENSIONS

# ------------------------------------------------------------------------------
# adcli libtool versioning
# CURRENT : REVISION : AGE
#   +1    :     0    : +1   == new interface that does not break old one.
#   +1    :     0    :  0   == removed an interface. Breaks old apps.
#    ?    :    +1    :  ?   == internal changes that doesn't break anything.

ADCLI_CURRENT=0
ADCLI_REVISION=0
ADCLI_AGE=0

# ------------------------------------------------------------------------------

AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([build/m4])
AM_INIT_AUTOMAKE([1.10])
AM_SANITY_CHECK
AM_MAINTAINER_MODE([enable])
m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])],)

LT_PREREQ([2.2.6])
LT_INIT([dlopen disable-static])
AC_PROG_CC
AC_PROG_CPP
AM_PROG_CC_C_O
LT_INIT

# -------------------------------------------------------------------
# Kerberos

if test "$KRB5_LIBS" != ""; then
	KRB5_PASSED_LIBS=$KRB5_LIBS
fi

if test "$KRB5_CFLAGS" != ""; then
	KRB5_PASSED_CFLAGS=$KRB5_CFLAGS
fi

AC_PATH_PROG(KRB5_CONFIG, krb5-config)
AC_MSG_CHECKING(for working krb5-config)
if test -x "$KRB5_CONFIG"; then
	KRB5_CFLAGS="`$KRB5_CONFIG --cflags krb5 gssapi`"
	KRB5_LIBS="`$KRB5_CONFIG --libs krb5 gssapi`"

	# Linking failures, so try this
	AC_CHECK_LIB(krb5support, krb5int_labeled_open, KRB5_LIBS="$KRB5_LIBS -lkrb5support")

	AC_MSG_RESULT(yes)
else
	if test "$KRB5_PASSED_LIBS" = ""; then
		AC_MSG_ERROR(no. Please install MIT kerberos devel package)
	fi
fi

if test "$KRB5_PASSED_LIBS" != ""; then
	KRB5_LIBS=$KRB5_PASSED_LIBS
fi

if test "$KRB5_PASSED_CFLAGS" != ""; then
	KRB5_CFLAGS=$KRB5_PASSED_CFLAGS
fi

AC_ARG_VAR([KRB5_CFLAGS], [C compiler flags for kerberos, overriding krb5-config])dnl
AC_ARG_VAR([KRB5_LIBS], [linker flags for kerberos, overriding krb5-config])dnl

AC_SUBST(KRB5_CFLAGS)
AC_SUBST(KRB5_LIBS)


# -------------------------------------------------------------------
# LDAP

AC_CHECK_LIB(ldap, ldap_search, , [ldap_invalid=yes])
AC_CHECK_LIB(lber, ber_pvt_opt_on, , [ldap_invalid=yes])
AC_CHECK_HEADERS([ldap.h], , [ldap_invalid=yes])

if test "$ldap_invalid" = "yes"; then
	AC_MSG_ERROR([Couldn't find OpenLDAP headers or libraries])
fi

AC_CHECK_LIB(ldap, ldap_init_fd, [true], [
	AC_MSG_ERROR([Couldn't find ldap_init_fd function in libldap])
])

AC_SUBST(LDAP_LIBS)
AC_SUBST(LDAP_CFLAGS)

# -------------------------------------------------------------------
# resolv

AC_MSG_CHECKING([for which library has res_query, ns_get16 and ns_get32])
for lib in "" "-lresolv"; do
	saved_LIBS="$LIBS"
	LIBS="$LIBS $lib"
	AC_LINK_IFELSE([
		AC_LANG_PROGRAM([#include <resolv.h>],
		                [res_query (0, 0, 0, 0, 0);
		                 ns_get32 (NULL);
		                 ns_get16 (NULL);])
	],
	[ AC_MSG_RESULT(${lib:-libc}); have_res_query="yes"; break; ],
	[ LIBS="$saved_LIBS" ])
done
if test "$have_res_query" != "yes"; then
	AC_MSG_RESULT(no)
	AC_MSG_ERROR([Couldn't find the library for the res_query function])
fi

# --------------------------------------------------------------------
# SASL

AC_CHECK_HEADERS([sasl/sasl.h], , [sasl_invalid=yes])

if test "$sasl_invalid" = "yes"; then
	AC_MSG_ERROR([Couldn't find Cyrus SASL headers])
fi

# --------------------------------------------------------------------
# Vendor error message

AC_ARG_WITH([vendor-error-message],
              [AS_HELP_STRING([--with-vendor-error-message=ARG],
                            [Add a vendor specific error message shown if a adcli command fails]
                           )],
              [AS_IF([test "x$withval" != "x"],
                     [AC_DEFINE_UNQUOTED([VENDOR_MSG],
                                         ["$withval"],
                                         [Vendor specific error message])],
                     [AC_MSG_ERROR([--with-vendor-error-message requires an argument])]
                    )],
              [])

# --------------------------------------------------------------------
# Documentation options

AC_MSG_CHECKING([whether to build documentation])
AC_ARG_ENABLE(doc,
              AS_HELP_STRING([--enable-doc],
                             [Disable building documentation])
             )

if test "$enable_doc" = "no"; then
	AC_MSG_RESULT($enable_doc)

else
	if test "$enable_doc" = ""; then
		disable_msg="(perhaps --disable-doc)"
	fi

	enable_doc="yes"
	AC_MSG_RESULT($enable_doc)

	AC_PATH_PROG([XSLTPROC], [xsltproc], [no])
	if test "$XSLTPROC" = "no"; then
		AC_MSG_ERROR([the xsltproc command was not found $disable_msg])
	fi

	AC_PATH_PROG([XMLTO], [xmlto], [no])
	if test "$XMLTO" = "no"; then
		AC_MSG_ERROR([the xmlto command was not found $disable_msg])
	fi

	AC_SUBST(XSLTPROC)
	AC_SUBST(XMLTO)
fi

AM_CONDITIONAL([ENABLE_DOC], [test "$enable_doc" = "yes"])
doc_status=$enable_doc

# --------------------------------------------------------------------
# Compilation and linking options

AC_MSG_CHECKING([for debug mode])
AC_ARG_ENABLE(debug,
              AS_HELP_STRING([--enable-debug=no/default/yes],
              [Turn on or off debugging]))

if test "$enable_debug" != "no"; then
	AC_DEFINE_UNQUOTED(WITH_DEBUG, 1, [Print debug output])
	AC_DEFINE_UNQUOTED(_DEBUG, 1, [In debug mode])
	CFLAGS="$CFLAGS -g"
fi

if test "$enable_debug" = "yes"; then
	debug_status="yes (-g, -O0, debug output)"
	CFLAGS="$CFLAGS -O0"
elif test "$enable_debug" = "no"; then
	debug_status="no (no debug output, NDEBUG)"
	AC_DEFINE_UNQUOTED(NDEBUG, 1, [Disable glib assertions])
else
	debug_status="default (-g, debug output)"
fi

AC_MSG_RESULT($debug_status)

AC_MSG_CHECKING(for more warnings)
if test "$GCC" = "yes"; then
	CFLAGS="$CFLAGS \
		-Wall -Wstrict-prototypes -Wmissing-declarations \
		-Wmissing-prototypes -Wnested-externs -Wpointer-arith \
		-Wdeclaration-after-statement -Wformat=2 -Winit-self \
		-Waggregate-return -Wno-missing-format-attribute"

	for option in -Wmissing-include-dirs -Wundef; do
		SAVE_CFLAGS="$CFLAGS"
		CFLAGS="$CFLAGS $option"
		AC_MSG_CHECKING([whether gcc understands $option])
		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])],
				  [has_option=yes],
				  [has_option=no])
		AC_MSG_RESULT($has_option)
		if test $has_option = no; then
			CFLAGS="$SAVE_CFLAGS"
		fi
	done
else
	AC_MSG_RESULT(no)
fi

AC_ARG_ENABLE(strict,
              [AS_HELP_STRING([--enable-strict], [Strict code compilation])]
             )

AC_MSG_CHECKING([build strict])

if test "$enable_strict" = "yes"; then
	CFLAGS="$CFLAGS -Werror"
	AC_DEFINE_UNQUOTED(WITH_STRICT, 1, [More strict checks])
	strict_status="yes (-Werror, fatals)"
else
	strict_status="no"
fi

AC_MSG_RESULT($strict_status)

AC_MSG_CHECKING([whether to build with gcov testing])
AC_ARG_ENABLE([coverage],
		[AS_HELP_STRING([--enable-coverage], [Whether to enable coverage testing ])],
		[],
		[enable_coverage=no])

AC_MSG_RESULT([$enable_coverage])

if test "$enable_coverage" = "yes"; then
	if test "$GCC" != "yes"; then
		AC_MSG_ERROR(Coverage testing requires GCC)
	fi

	AC_PATH_PROG(GCOV, gcov, no)
	if test "$GCOV" = "no" ; then
		AC_MSG_ERROR(gcov tool is not available)
	fi

	AC_PATH_PROG(LCOV, lcov, no)
	if test "$LCOV" = "no" ; then
		AC_MSG_ERROR(lcov tool is not installed)
	fi

	AC_PATH_PROG(GENHTML, genhtml, no)
	if test "$GENHTML" = "no" ; then
		AC_MSG_ERROR(lcov's genhtml tool is not installed)
	fi

	CFLAGS="$CFLAGS -O0 -g -fprofile-arcs -ftest-coverage"
	LDFLAGS="$LDFLAGS -lgcov"
fi

AM_CONDITIONAL([WITH_COVERAGE], [test "$enable_coverage" = "yes"])
AC_SUBST(LCOV)
AC_SUBST(GCOV)
AC_SUBST(GENHTML)

AC_PATH_PROG(BIN_CAT, cat, no)
if test "$BIN_CAT" = "no" ; then
	AC_MSG_ERROR([cat is not available])
else
	AC_DEFINE_UNQUOTED(BIN_CAT, "$BIN_CAT", [path to cat, used in unit test])
fi

AC_PATH_PROG(BIN_TAC, tac, no)
if test "$BIN_TAC" = "no" ; then
	AC_MSG_ERROR([tac is not available])
else
	AC_DEFINE_UNQUOTED(BIN_TAC, "$BIN_TAC", [path to tac, used in unit test])
fi

AC_PATH_PROG(BIN_REV, rev, no)
if test "$BIN_REV" = "no" ; then
	AC_MSG_ERROR([rev is not available])
else
	AC_DEFINE_UNQUOTED(BIN_REV, "$BIN_REV", [path to rev, used in unit test])
fi

AC_PATH_PROG(BIN_ECHO, echo, no)
if test "$BIN_ECHO" = "no" ; then
	AC_MSG_ERROR([echo is not available])
else
	AC_DEFINE_UNQUOTED(BIN_ECHO, "$BIN_ECHO", [path to echo, used in unit test])
fi

AC_MSG_CHECKING([where is Samba's net utility])
AC_ARG_WITH([samba_data_tool],
              AS_HELP_STRING([--with-samba-data-tool=/path],
              [Path to Samba's net utility]),
              [],
              [with_samba_data_tool=/usr/bin/net])
AC_MSG_RESULT([$with_samba_data_tool])

AC_DEFINE_UNQUOTED(SAMBA_DATA_TOOL, "$with_samba_data_tool",
                   [Path to Samba's net utility])

AC_SUBST(SAMBA_DATA_TOOL, [$with_samba_data_tool])
# ---------------------------------------------------------------------

ADCLI_LT_RELEASE=$ADCLI_CURRENT:$ADCLI_REVISION:$ADCLI_AGE
AC_SUBST(ADCLI_LT_RELEASE)

AC_CONFIG_FILES([Makefile
	build/Makefile
	doc/Makefile
	doc/version.xml
	doc/samba_data_tool_path.xml
	library/Makefile
	tools/Makefile
])
AC_OUTPUT

AC_MSG_NOTICE([build options:
    Host:                            $host
    Debug build:                     $debug_status
    Strict build:                    $strict_status
    Documentation:                   $doc_status
])