#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
#
#  This file is part of TALER
#  Copyright (C) 2014-2023 Taler Systems SA
#
#  TALER is free software; you can redistribute it and/or modify it under the
#  terms of the GNU General Public License as published by the Free Software
#  Foundation; either version 3, or (at your option) any later version.
#
#  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
#  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License along with
#  TALER; see the file COPYING.  If not, If not, see <http://www.gnu.org/license>
#
# This configure file is in the public domain

AC_PREREQ([2.69])
AC_INIT([taler-merchant],[0.9.1],[taler-bug@gnunet.org])
AC_CONFIG_SRCDIR([src/backend/taler-merchant-httpd.c])
AC_CONFIG_HEADERS([taler_merchant_config.h])
# support for non-recursive builds
AM_INIT_AUTOMAKE([subdir-objects 1.9 tar-pax])

# pretty build rules
AM_SILENT_RULES([yes])

AC_CONFIG_MACRO_DIR([m4])
AC_PROG_AWK
AC_PROG_CC
AC_PROG_OBJC
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AM_PROG_CC_C_O

LT_INIT([disable-static dlopen])

DX_INIT_DOXYGEN([taler-merchant],,,
DX_PS_FEATURE(OFF),
DX_PDF_FEATURE(OFF),
DX_RTF_FEATURE(OFF),
DX_CHI_FEATURE(OFF),
DX_XML_FEATURE(OFF))

AC_MSG_CHECKING([whether to compile documentation ONLY])
AC_ARG_ENABLE([only-doc],
  [AS_HELP_STRING([--enable-only-doc], [only compile Taler documentation])],
  [doc_only=${enableval}],
  [doc_only=no])
AC_MSG_RESULT($doc_only)
AM_CONDITIONAL([DOC_ONLY], [test "$doc_only" = "yes"])


# Not indented as it covers most of the file...
AS_IF([test "x$doc_only" != xyes],[


# Checks for programs.
AC_PROG_CC

CFLAGS="-Wall -Wno-address-of-packed-member $CFLAGS"

# Checks for header files.
AC_CHECK_HEADERS([stdint.h stdlib.h string.h unistd.h])

# Check for GNUnet's libgnunetutil.
libgnunetutil=0
AC_MSG_CHECKING([for libgnunetutil])
AC_ARG_WITH(gnunet,
            [AS_HELP_STRING([--with-gnunet=PFX], [base of GNUnet installation])],
            [AC_MSG_RESULT([given as $with_gnunet])],
            [AC_MSG_RESULT(not given)
             with_gnunet=yes])
AS_CASE([$with_gnunet],
        [yes], [],
        [no], [AC_MSG_ERROR([--with-gnunet is required])],
        [LDFLAGS="-L$with_gnunet/lib $LDFLAGS"
         CPPFLAGS="-I$with_gnunet/include $CPPFLAGS"])
AC_CHECK_HEADERS([gnunet/gnunet_util_lib.h],
 [AC_CHECK_LIB([gnunetutil], [GNUNET_SCHEDULER_run], libgnunetutil=1)])
AS_IF([test $libgnunetutil != 1],
  [AC_MSG_ERROR([[
***
*** You need libgnunetutil to build this program.
*** This library is part of GNUnet, available at
***   https://gnunet.org
*** ]])])


# test for postgres
AX_LIB_POSTGRESQL([13.0])
AS_IF([test "x$found_postgresql" = "xyes"],
  [SAVE_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="$POSTGRES_CPPFLAGS $CPPFLAGS"
   AC_CHECK_HEADERS([libpq-fe.h], [postgres=1], [postgres=0])])
AS_IF([test "x$postgres" != "x1"],
  [AC_MSG_ERROR([[
***
*** You need libpq(-dev) >= 13.0 to build this program.
*** ]])])
AM_CONDITIONAL([HAVE_POSTGRESQL], [test "x$postgres" = "x1"])
AC_DEFINE_UNQUOTED([HAVE_POSTGRESQL], [$postgres],
                   [Define to 1 if Postgres is available])

TALER_LIB_LDFLAGS="-export-dynamic -no-undefined"
TALER_PLUGIN_LDFLAGS="-export-dynamic -avoid-version -module -no-undefined"

AC_SUBST(TALER_LIB_LDFLAGS)
AC_SUBST(TALER_PLUGIN_LDFLAGS)


# Check for Taler's libtalerpq
libtalerpq=0
AC_MSG_CHECKING([for libtalerpq])
AC_ARG_WITH(exchange,
            [AS_HELP_STRING([--with-exchange=PFX], [base of Taler EXCHANGE installation])],
            [AC_MSG_RESULT([given as $with_exchange])],
            [AC_MSG_RESULT(not given)
             with_exchange=yes])
AS_CASE([$with_exchange],
        [yes], [],
        [no], [AC_MSG_ERROR([--with-exchange is required])],
        [LDFLAGS="-L$with_exchange/lib $LDFLAGS"
         CPPFLAGS="-I$with_exchange/include $CPPFLAGS"])

CPPFLAGS="$CPPFLAGS $POSTGRESQL_CPPFLAGS"

AC_CHECK_HEADERS([gnunet/gnunet_pq_lib.h],
 [AC_CHECK_LIB([gnunetpq], [GNUNET_PQ_connect_with_cfg], libgnunetpq=1)])
AM_CONDITIONAL(HAVE_GNUNETPQ, test x$libgnunetpq = x1)

# check for libmicrohttpd
AC_MSG_CHECKING([for microhttpd])
AC_ARG_WITH([microhttpd],
            [AS_HELP_STRING([--with-microhttpd=PFX], [base of microhttpd installation])],
            [AC_MSG_RESULT([given as $with_microhttpd])],
            [AC_MSG_RESULT([not given])
             with_microhttpd=yes])
AS_CASE([$with_microhttpd],
        [yes], [],
        [no], [AC_MSG_ERROR([--with-microhttpd is required])],
        [LDFLAGS="-L$with_microhttpd/lib $LDFLAGS"
         CPPFLAGS="-I$with_microhttpd/include $CPPFLAGS"])
MHD_VERSION_AT_LEAST([0.9.71])

jansson=0
PKG_CHECK_MODULES([JANSSON], [jansson >= 2.3],
                  [LDFLAGS="$JANSSON_LIBS $LDFLAGS"
                   CPPFLAGS="$JANSSON_CFLAGS $CPPFLAGS"],
                  [AC_MSG_ERROR([[
***
*** You need libjansson to build this program.
***]])])


# test for libqrencode
qrencode=0
QR_LIBS="-lqrencode"
AC_MSG_CHECKING(for libqrencode)
AC_ARG_WITH(qrencode,
   [  --with-qrencode=PFX    Base of libqrencode installation],
   [AC_MSG_RESULT([$with_qrencode])
    AS_CASE([$with_qrencode],
      [no],[],
      [yes],[
        AC_CHECK_HEADERS(qrencode.h,qrencode=1)
      ],
      [
        CPPFLAGS="-I$with_qrencode/include $CPPFLAGS"
        QR_CFLAGS="-I$with_qrencode/include"
        QR_LIBS="-L$with_qrencode/lib -lqrencode"
        AC_CHECK_HEADERS(qrencode.h,qrencode=1)
      ])
   ],
   [AC_MSG_RESULT([--with-qrencode not specified])
    AC_CHECK_HEADERS(qrencode.h,qrencode=1)])

AS_IF([test "$qrencode" != 1],
[AC_MSG_ERROR([[
***
*** You need libqrencode to build this program.
*** ]])])


AC_SUBST(QR_CFLAGS)
AC_SUBST(QR_LIBS)

# NOTE: If we find libcurl here we set LIBCURL to -lcurl
# This affects the LIBCURL_CHECK_CONFIG call below as it takes LIBCURL into
# account when checking for curl.
AC_CHECK_LIB([curl],
             [curl_easy_getinfo],
             [LIBCURL="-lcurl"
              curl_gnutls=1],
             [curl_gnutls=0])

LIBCURL_CHECK_CONFIG([], [7.34.0], [],
                     [AC_MSG_ERROR([cURL must have a version >= 7.34.0])])

# Even if curl is found, we check for this constant in order to determine
# if we can use this feature.
AC_CHECK_HEADER([curl/curl.h],
                [AC_CHECK_DECLS([CURLINFO_TLS_SSL_PTR],
                                [],
                                [AC_MSG_ERROR([cURL must support CURLINFO_TLS_SSL_PTR])],
                                [[#include <curl/curl.h>]])])

# Check for Taler's libtalerfakebank
libtalerfakebank=0
AC_MSG_CHECKING([for libtalerfakebank])
AC_ARG_WITH(exchange,
            [AS_HELP_STRING([--with-exchange=PFX], [base of Taler EXCHANGE installation])],
            [AC_MSG_RESULT([given as $with_exchange])],
            [AC_MSG_RESULT(not given)
             with_exchange=yes])
AS_CASE([$with_exchange],
        [yes], [],
        [no], [AC_MSG_ERROR([--with-exchange is required])],
        [LDFLAGS="-L$with_exchange/lib $LDFLAGS"
         CPPFLAGS="-I$with_exchange/include $CPPFLAGS $POSTGRESQL_CPPFLAGS"])

CPPFLAGS="$CPPFLAGS $POSTGRESQL_CPPFLAGS"

AC_CHECK_HEADERS([taler/taler_fakebank_lib.h],
 [AC_CHECK_LIB([talerfakebank], [TALER_FAKEBANK_start], libtalerfakebank=1)])
AM_CONDITIONAL(HAVE_TALERFAKEBANK, test x$libtalerfakebank = x1)


# check for libtalertwister
twistertesting=0
AC_MSG_CHECKING([for talerwtistertesting])
AC_ARG_WITH([twister],
            [AS_HELP_STRING([--with-twister=PFX], [base of libtalertwistertesting])],
            [AC_MSG_RESULT([given as $with_twister])],
            [AC_MSG_RESULT([not given])
             with_twister=yes])
AS_CASE([$with_twister],
        [yes], [],
        [no], [AC_MSG_WARN([no twister-testing will be compiled])],
        [LDFLAGS="-L$with_twister/lib $LDFLAGS"
         CPPFLAGS="-I$with_twister/include $CPPFLAGS"])
AC_CHECK_LIB(talertwistertesting,TALER_TWISTER_run_twister,
  [AC_CHECK_HEADER([taler/taler_twister_testing_lib.h],[twistertesting=1])])
AM_CONDITIONAL(HAVE_TWISTER, test x$twistertesting = x1)


# gcov compilation
AC_MSG_CHECKING(whether to compile with support for code coverage analysis)
AC_ARG_ENABLE([coverage],
              AS_HELP_STRING([--enable-coverage],
                             [compile the library with code coverage support]),
              [use_gcov=${enableval}],
              [use_gcov=no])
AC_MSG_RESULT($use_gcov)
AM_CONDITIONAL([USE_COVERAGE], [test "x$use_gcov" = "xyes"])

# Require minimum libgcrypt version
need_libgcrypt_version=1.6.1
AC_DEFINE_UNQUOTED([NEED_LIBGCRYPT_VERSION], ["$need_libgcrypt_version"],
                                             [minimum version of libgcrypt required])
AM_PATH_LIBGCRYPT([$need_libgcrypt_version])

# logging
extra_logging=0
AC_ARG_ENABLE([logging],
   AS_HELP_STRING([--enable-logging@<:@=value@:>@],[Enable logging calls. Possible values: yes,no,verbose ('yes' is the default)]),
   [AS_IF([test "x$enableval" = "xyes"], [],
          [test "x$enableval" = "xno"], [AC_DEFINE([GNUNET_CULL_LOGGING],[],[Define to cull all logging calls])],
          [test "x$enableval" = "xverbose"], [extra_logging=1]
          [test "x$enableval" = "xveryverbose"], [extra_logging=2])
   ], [])
AC_DEFINE_UNQUOTED([GNUNET_EXTRA_LOGGING],[$extra_logging],[1 if extra logging is enabled, 2 for very verbose extra logging, 0 otherwise])

# version info
AC_PATH_PROG(gitcommand, git)
AC_MSG_CHECKING(for source being under a VCS)
git_version=
AS_IF([test ! "X$gitcommand" = "X"],
[
  git_version=$(cd $srcdir ; git rev-list --full-history --all --abbrev-commit | head -n 1 2>/dev/null)
])
AS_IF([test "X$git_version" = "X"],
  [
    vcs_name="no"
    vcs_version="\"release\""
  ],
  [
    vcs_name="yes, git-svn"
    vcs_version="\"git-$git_version\""
  ])
AC_MSG_RESULT($vcs_name)

AC_MSG_CHECKING(VCS version)
AC_MSG_RESULT($vcs_version)
AC_DEFINE_UNQUOTED(VCS_VERSION, [$vcs_version], [VCS revision/hash or tarball version])

# Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_TYPE_INTMAX_T
AC_TYPE_UINTMAX_T

# Checks for library functions.
AC_CHECK_FUNCS([strdup])


#
# Check for tsc
#
AC_CHECK_PROG([tsc],[tsc],[yes],[no])
AM_CONDITIONAL([HAVE_TSC], [test "x$tsc" = xyes])


AC_ARG_ENABLE([[doc]],
  [AS_HELP_STRING([[--disable-doc]], [do not build any documentation])], ,
    [enable_doc=yes])
test "x$enable_doc" = "xno" || enable_doc=yes
AM_CONDITIONAL([ENABLE_DOC], [test "x$enable_doc" = "xyes"])


],[  # this is about the doc-only if on top of the file

# logic if doc_only is set, make sure conditionals are still defined
AM_CONDITIONAL([HAVE_GNUNETPQ], [false])
AM_CONDITIONAL([HAVE_POSTGRESQL], [false])
AM_CONDITIONAL([HAVE_TALERFAKEBANK], [false])
AM_CONDITIONAL([HAVE_TSC], [false])
AM_CONDITIONAL([USE_COVERAGE], [false])
AM_CONDITIONAL([ENABLE_DOC], [true])
AM_CONDITIONAL([HAVE_TWISTER], [true])


# end of 'doc_only'
])


# should experimental code be compiled (code that may not yet compile / have passing test cases)?
AC_MSG_CHECKING(whether to compile experimental code)
AC_ARG_ENABLE([experimental],
   [AS_HELP_STRING([--enable-experimental], [enable compiling experimental code])],
   [enable_experimental=${enableval}],
   [enable_experimental=no])
AC_MSG_RESULT($enable_experimental)
AM_CONDITIONAL([HAVE_EXPERIMENTAL], [test "x$enable_experimental" = "xyes"])


AC_CONFIG_FILES([Makefile
contrib/Makefile
doc/Makefile
doc/doxygen/Makefile
src/Makefile
src/backend/Makefile
src/backenddb/Makefile
src/include/Makefile
src/lib/Makefile
src/merchant-tools/Makefile
src/testing/Makefile
])
AC_OUTPUT