#!/bin/bash
#

mkl_meta_set "description" "name"      "librdkafka"
mkl_meta_set "description" "oneline"   "The Apache Kafka C/C++ library"
mkl_meta_set "description" "long"      "Full Apache Kafka protocol support, including producer and consumer"
mkl_meta_set "description" "copyright" "Copyright (c) 2012-2015 Magnus Edenhill"

# Enable generation of pkg-config .pc file
mkl_mkvar_set "" GEN_PKG_CONFIG y


mkl_require cxx
mkl_require lib
mkl_require pic
mkl_require atomics
mkl_require good_cflags
mkl_require socket

# Generate version variables from rdkafka.h hex version define
# so we can use it as string version when generating a pkg-config file.

verdef=$(grep '^#define  *RD_KAFKA_VERSION  *0x' src/rdkafka.h | sed 's/^#define  *RD_KAFKA_VERSION  *\(0x[a-f0-9]*\)\.*$/\1/')
mkl_require parseversion hex2str "%d.%d.%d" "$verdef" RDKAFKA_VERSION_STR

mkl_toggle_option "Development" ENABLE_DEVEL "--enable-devel" "Enable development asserts, checks, etc" "n"
mkl_toggle_option "Development" ENABLE_VALGRIND "--enable-valgrind" "Enable in-code valgrind suppressions" "n"

mkl_toggle_option "Development" ENABLE_REFCNT_DEBUG "--enable-refcnt-debug" "Enable refcnt debugging" "n"

mkl_toggle_option "Development" ENABLE_SHAREDPTR_DEBUG "--enable-sharedptr-debug" "Enable sharedptr debugging" "n"

mkl_toggle_option "Feature" ENABLE_SSL "--enable-ssl" "Enable SSL support" "y"
mkl_toggle_option "Feature" ENABLE_SASL "--enable-sasl" "Enable SASL support" "y"


function checks {

    # required libs
    mkl_lib_check "libpthread" "" fail CC "-lpthread"

    # optional libs
    mkl_lib_check "zlib" "WITH_ZLIB" disable CC "-lz"
    mkl_lib_check "libcrypto" "" disable CC "-lcrypto"
    mkl_lib_check "liblz4" "WITH_LZ4" disable CC "-llz4" \
		  "
#include <lz4frame.h>
"

    # Snappy support is built-in
    mkl_allvar_set WITH_SNAPPY WITH_SNAPPY y

    if [[ "$ENABLE_SSL" == "y" ]]; then
	mkl_meta_set "libssl" "deb" "libssl-dev"
	mkl_lib_check "libssl" "WITH_SSL" disable CC "-lssl"
    fi

    if [[ "$ENABLE_SASL" == "y" ]]; then
        mkl_meta_set "libsasl2" "deb" "libsasl2-dev"
        if ! mkl_lib_check "libsasl2" "WITH_SASL" disable CC "-lsasl2"; then
	    mkl_lib_check "libsasl" "WITH_SASL" disable CC "-lsasl"
        fi
    fi

    # Check for libc regex
    mkl_compile_check "regex" "HAVE_REGEX" disable CC "" \
"
#include <stddef.h>
#include <regex.h>
void foo (void) {
   regcomp(NULL, NULL, 0);
   regexec(NULL, NULL, 0, NULL, 0);
   regerror(0, NULL, NULL, 0);
   regfree(NULL);
}"


    # -lrt is needed on linux for clock_gettime: link it if it exists.
    mkl_lib_check "librt" "" cont CC "-lrt"

    # Older g++ (<=4.1?) gives invalid warnings for the C++ code.
    mkl_mkvar_append CXXFLAGS CXXFLAGS "-Wno-non-virtual-dtor"

    # Required on SunOS
    if [[ $MKL_DISTRO == "SunOS" ]]; then
	mkl_mkvar_append CPPFLAGS CPPFLAGS "-D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -D__EXTENSIONS__"
    fi

    # Check if strndup() is available (isn't on Solaris 10)
    mkl_compile_check "strndup" "HAVE_STRNDUP" disable CC "" \
"#include <string.h>
int foo (void) {
   return strndup(\"hi\", 2) ? 0 : 1;
}"

    # Figure out what tool to use for dumping public symbols.
    # We rely on configure.cc setting up $NM if it exists.
    if mkl_env_check "nm" "" cont "NM" ; then
	# nm by future mk var
	if [[ $MKL_DISTRO == "osx" || $MKL_DISTRO == "AIX" ]]; then
	    mkl_mkvar_set SYMDUMPER SYMDUMPER '$(NM) -g'
	else
	    mkl_mkvar_set SYMDUMPER SYMDUMPER '$(NM) -D'
	fi
    else
	# Fake symdumper
	mkl_mkvar_set SYMDUMPER SYMDUMPER 'echo'
    fi

    # The linker-script generator (lds-gen.py) requires python
    if [[ $WITH_LDS == y ]]; then
        if ! mkl_command_check python "HAVE_PYTHON" "disable" "python -V"; then
            mkl_err "disabling linker-script since python is not available"
            mkl_mkvar_set WITH_LDS WITH_LDS "n"
        fi
    fi

    if [[ "$ENABLE_VALGRIND" == "y" ]]; then
	mkl_compile_check valgrind WITH_VALGRIND disable CC "" \
			  "#include <valgrind/memcheck.h>"
    fi
}