################################################################
#   BSD LICENSE
#
#   Copyright(c) 2007-2024 Intel Corporation. All rights reserved.
#   All rights reserved.
#
#   Redistribution and use in source and binary forms, with or without
#   modification, are permitted provided that the following conditions
#   are met:
#
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in
#       the documentation and/or other materials provided with the
#       distribution.
#     * Neither the name of Intel Corporation nor the names of its
#       contributors may be used to endorse or promote products derived
#       from this software without specific prior written permission.
#
#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
################################################################

#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_PREREQ([2.69])
AC_INIT([qatzip], [1.3.1], [])
AM_INIT_AUTOMAKE([-Wall -Werror -Wno-portability foreign subdir-objects tar-pax])

AM_SILENT_RULES([yes])
AC_USE_SYSTEM_EXTENSIONS

AC_CONFIG_MACRO_DIRS([m4])

# The lib version would be calculate from this value
# Not directly use this version, if the LIBQATZIP_VERSION is x.y.z
# lib major version would be x-z, second version is z, and last is y
AC_SUBST([LIBQATZIP_VERSION], [5:0:2])
# Checks for programs.
AC_PROG_AWK
AC_PROG_CC
AC_PROG_LN_S
AC_PROG_MAKE_SET
AM_PROG_AR
AC_PATH_TOOL(PKGCONFIG, pkg-config)

LT_PREREQ([2.4])
LT_INIT

# Checks for typedefs, structures, and compiler characteristics.
AC_CHECK_HEADER_STDBOOL
AC_C_INLINE
AC_TYPE_INT64_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_TYPE_UINT8_T

# Checks for system header files.
AC_CHECK_HEADERS([stdio.h stdarg.h fcntl.h limits.h memory.h \
    unistd.h stdint.h stdlib.h string.h sys/ioctl.h \
    sys/time.h sys/types.h sys/stat.h unistd.h utime.h \
    pthread.h sched.h])

# Checks for library functions.
AC_CHECK_FUNCS([atexit getcwd gettimeofday \
    memmove memset mkdir munmap \
    realpath strdup strerror strrchr \
    strtol strtoul utime fork malloc mmap \
    sched_getcpu])

# Checks for pthread.
AC_CHECK_LIB([pthread], [pthread_create], ,
    [AC_MSG_ERROR([not found pthread_create in -lpthread])])

#check for numa.
AC_CHECK_HEADER([numa.h], , [AC_MSG_ERROR([numa.h not found])])

#check for zlib.
AC_CHECK_HEADER([zlib.h], , [AC_MSG_ERROR([zlib.h not found])])

AC_MSG_CHECKING(zlib version)
AC_TRY_COMPILE(
[#include <zlib.h>
],
[#if ZLIB_VERNUM < 0x1270
#error zlib version is too old ...
#endif],
[AC_MSG_RESULT([ok])],
[AC_MSG_ERROR([zlib version must be 1.2.7 or higher.])
])

AC_CHECK_LIB([numa], [numa_node_of_cpu], , AC_MSG_ERROR([numa_node_of_cpu not found]))
AC_CHECK_LIB([z], [deflate], , AC_MSG_ERROR([deflate not found]))

#check for lz4 lib
AC_CHECK_HEADER([lz4.h], , [AC_MSG_ERROR([lz4.h not found])])
AC_CHECK_HEADER([lz4frame.h], , [AC_MSG_ERROR([lz4frame.h not found])])
AC_CHECK_LIB([lz4], [LZ4F_compressFrame], , AC_MSG_ERROR([LZ4F_compressFrame not found]))

##check for xxhash lib
#AC_CHECK_HEADER([xxhash.h],,[AC_MSG_ERROR([not found xxhash.h])])
#AC_CHECK_LIB([xxhash], [XXH32_update], ,AC_MSG_ERROR([not found XXH32_update in -lxxhash]))
AC_DEFINE(XXH_NAMESPACE, QATZIP_, "Prefix xxhash API with QATZIP_")

#with ICP_ROOT
AC_ARG_WITH([ICP_ROOT],
    AS_HELP_STRING([--with-ICP_ROOT=PATH],[Used to link Cpa library]),
    AS_IF(
        [test "$withval" = "yes"],
        AC_MSG_ERROR([--with-ICP_ROOT=PATH requires a PATH]),
        [ICP_ROOT="$withval"]
    )
)

#check for qat header file.
ICP_INCLUDE_CFLAGS=
AS_IF([test ! -z "${ICP_ROOT}"],
[
    #check for OOT relative header and lib
    AC_MSG_CHECKING([qat header files from ${ICP_ROOT}])
    AS_IF([test ! -e ${ICP_ROOT}/quickassist/include/cpa.h ||
        test ! -e ${ICP_ROOT}/quickassist/include/dc/cpa_dc.h ||
        test ! -e ${ICP_ROOT}/quickassist/utilities/libusdm_drv/qae_mem.h ||
        test ! -e ${ICP_ROOT}/quickassist/lookaside/access_layer/include/icp_sal_poll.h ||
        test ! -e ${ICP_ROOT}/quickassist/lookaside/access_layer/include/icp_sal_user.h],
        [
            AC_MSG_RESULT([no])
            AC_MSG_ERROR([QAT header files not found in $ICP_ROOT, please check \$ICP_ROOT])
        ],
        [
            AC_MSG_RESULT([yes])
            ICP_INCLUDE_CFLAGS=" -I${ICP_ROOT}/quickassist/include \
                                -I${ICP_ROOT}/quickassist/include/dc/ \
                                -I${ICP_ROOT}/quickassist/utilities/libusdm_drv/ \
                                -I${ICP_ROOT}/quickassist/lookaside/access_layer/include/ "
            LDFLAGS+=" -Wl,-rpath,${ICP_ROOT}/build/ -L${ICP_ROOT}/build/ "
        ]
    )
    AC_SUBST(ICP_INCLUDE_CFLAGS)

    AC_CHECK_LIB(qat_s, cpaDcCompressData2, ,
        [
            AC_MSG_ERROR([cpaDcCompressData2 not found cpaDcCompressData2])
        ]
    )

    #check for icp_adf_get_numDevices/icp_sal_userIsQatAvailable
    AC_CHECK_LIB(qat_s, icp_adf_get_numDevices,
        [ADF_CFLAGS="-DADF_PCI_API"
        AC_SUBST(ADF_CFLAGS)],
        [
            AC_CHECK_LIB(qat_s, icp_sal_userIsQatAvailable,
                [SAL_CFLAGS="-DSAL_DEV_API"
                AC_SUBST(SAL_CFLAGS)],
                [AC_MSG_ERROR([icp_sal_userIsQatAvailable/icp_adf_get_numDevices not found])]
            )
        ]
    )

    #check for usdm lib
    AC_CHECK_LIB(usdm_drv_s, qaeMemAllocNUMA, ,
        [AC_MSG_ERROR([qaeMemAllocNUMA not found])])
],
[
    #check for qat lib.
    AC_MSG_CHECKING([qat header files from sys usr])
    AC_CHECK_HEADERS(
        [qat/cpa.h qat/cpa_dc.h qat/qae_mem.h qat/icp_sal_poll.h qat/icp_sal_user.h],
        [
            AC_DEFINE([HAVE_QAT_HEADERS], [], [QAT header files in include/qat subdirectory])
        ],
        [AC_MSG_ERROR([qat header files not found])],
        [#ifdef HAVE_QAT_CPA_H
        # include <qat/cpa.h>
        #endif
        ]
    )

    AC_CHECK_LIB(qat, cpaDcCompressData2, ,
        [ AC_MSG_ERROR([cpaDcCompressData2 not found])],
	[-lusdm -lcrypto])

    #check for icp_adf_get_numDevices/icp_sal_userIsQatAvailable
    AC_CHECK_LIB(qat, icp_adf_get_numDevices,
        [ADF_CFLAGS="-DADF_PCI_API"
         AC_SUBST(ADF_CFLAGS)],
        [
            AC_CHECK_LIB(qat, icp_sal_userIsQatAvailable,
                [SAL_CFLAGS="-DSAL_DEV_API"
                 AC_SUBST(SAL_CFLAGS)],
                [AC_MSG_ERROR([icp_sal_userIsQatAvailable/icp_adf_get_numDevices not found])],
		[-lusdm -lcrypto]
            )
        ]
    )

    #check for usdm lib
    AC_CHECK_LIB(usdm, qaeMemAllocNUMA,,
        [AC_MSG_ERROR([qaeMemAllocNUMA not found])])
])

#check for compile flags
AC_MSG_CHECKING([cflags])
CFLAGS+=' -Wall -Werror -std=gnu99 -pedantic \
          -fstack-protector-strong -fPIE -fPIC \
          -fno-delete-null-pointer-checks -fwrapv'
AS_IF([test "x${CC}" = "xgcc"], [CFLAGS+=' -fno-strict-overflow'], [])
AC_MSG_RESULT([yes])

#check for compile flags
AC_MSG_CHECKING([ldflags])
LDFLAGS+=' -fstack-protector-strong -fPIC -pie -z relro -z now -Wl,-z,noexecstack'
AC_MSG_RESULT([yes])

#Enable debug mode
AC_ARG_ENABLE(debug,
    AS_HELP_STRING([--enable-debug], [Enable debug mode]),
    [
        debug=true
        CFLAGS+=' -g -DQATZIP_DEBUG -O0'
    ]      ,
    [
        debug=false
        CFLAGS+=' -O2'
        AS_IF([test "x${CC}" = "xgcc"], [CFLAGS+=' -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2'], [])
    ]
)
AM_CONDITIONAL([QATZIP_DEBUG_AC], [test x$debug = xtrue])

#Enable qatzip symbol
AC_ARG_ENABLE(symbol,
    AS_HELP_STRING([--enable-symbol], [Enable qatzip symbol]),
    [
        symbol=true
        CFLAGS+=' -g'
    ],
    [
        symbol=false
    ]
)
AM_CONDITIONAL([QATZIP_SYMBOL_AC], [test x$symbol = xtrue])

#Enable qatzip pthread_barrier
AC_ARG_ENABLE(pthread_barrier,
    AS_HELP_STRING([--enable-pthread-barrier], [Enable pthread_barrier]),
    [
        pthread_barrier=true
        CFLAGS+=' -DENABLE_THREAD_BARRIER'
    ],
    [
        pthread_barrier=false
    ]
)
AM_CONDITIONAL([QATZIP_PTHREAD_BARRIER_AC], [test x$pthread_barrier = xtrue])

#Enable lz4s-postprocessing
AC_ARG_ENABLE(lz4s_postprocessing,
    AS_HELP_STRING([--enable-lz4s-postprocessing], [Enable lz4s and zstd post processing]),
    [
        lz4s_postprocessing=true
        #check for zstd lib
	SAVE_CFLAGS=${CFLAGS}
	CFLAGS=
        AC_CHECK_HEADER([zstd.h])
        AC_CHECK_LIB([zstd], [ZSTD_compressCCtx])
	CFLAGS=${SAVE_CFLAGS}
        ZSTD_LIBADD='-lpthread -Bstatic -lzstd'
	AC_SUBST(ZSTD_LIBADD)

    ],
    [
        lz4s_postprocessing=false
    ]
)
AM_CONDITIONAL([QATZIP_LZ4S_POSTPROCESS_AC], [test x$lz4s_postprocessing = xtrue])

AC_CONFIG_FILES([Makefile
                 qatzip.spec
                 src/Makefile
                 test/Makefile
                 utils/Makefile]
                 qatzip.pc)
AC_OUTPUT