nginx-otel-nix/config

ngx_addon_name=ngx_otel_module
ngx_module_type=HTTP
ngx_module_name=$ngx_addon_name
ngx_module_incs=
ngx_module_deps=" \
  $ngx_addon_dir/src/batch_exporter.hpp \
  $ngx_addon_dir/src/grpc_log.hpp \
  $ngx_addon_dir/src/ngx.hpp \
  $ngx_addon_dir/src/str_view.hpp \
  $ngx_addon_dir/src/trace_context.hpp \
  $ngx_addon_dir/src/trace_service_client.hpp \
"
ngx_module_srcs=" \
  $ngx_addon_dir/src/grpc_log.cpp \
  $ngx_addon_dir/src/ngx_otel_module.cpp \
  objs/opentelemetry/proto/common/v1/common.pb.cc \
  objs/opentelemetry/proto/resource/v1/resource.pb.cc \
  objs/opentelemetry/proto/trace/v1/trace.pb.cc \
  objs/opentelemetry/proto/collector/trace/v1/trace_service.pb.cc \
  objs/opentelemetry/proto/collector/trace/v1/trace_service.grpc.pb.cc \
"

ngx_feature="c-ares"
ngx_feature_name=""
ngx_feature_run=no
ngx_feature_incs="#include <ares.h>"
ngx_feature_path="/usr/include"
ngx_feature_libs="-lcares"
ngx_feature_test="ares_version(NULL);"
. auto/feature

if [ $ngx_found = no ]; then

    # FreeBSD port

    ngx_feature="libcares in /usr/local/"
    ngx_feature_path="/usr/local/include"

    if [ $NGX_RPATH = YES ]; then
        ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lcares"
    else
        ngx_feature_libs="-L/usr/local/lib -lcares"
    fi

    . auto/feature
fi

if [ $ngx_found = yes ]; then
    ngx_module_libs="$ngx_module_libs -lcares"
fi

unset ngx_found

### C++ feature test is unavailable in nginx

CXX=${CXX:-c++}
CXXFLAGS="$CXXFLAGS --std=c++17"
CXX_TEST_FLAGS=${CXX_TEST_FLAGS:---std=c++17}

autocppfeature()
{
    echo $ngx_n "checking for $ngx_feature ...$ngx_c"

cat << END >> $NGX_AUTOCONF_ERR
----------------------------------------
checking for $ngx_feature

END

    ngx_found=no

    if test -n "$ngx_feature_name"; then
        ngx_have_feature=`echo $ngx_feature_name \
                   | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
    fi

    if test -n "$ngx_feature_path"; then
        for ngx_temp in $ngx_feature_path; do
            ngx_feature_inc_path="$ngx_feature_inc_path -I $ngx_temp"
        done
    fi

cat << END > $NGX_AUTOTEST.cpp

$ngx_feature_incs

int main(void) {
    $ngx_feature_test;
    return 0;
}

END

    ngx_test="$CXX $CXX_TEST_FLAGS $CXX_AUX_FLAGS $ngx_feature_inc_path \
              -o $NGX_AUTOTEST $NGX_AUTOTEST.cpp $NGX_TEST_LD_OPT $ngx_feature_libs"

    ngx_feature_inc_path=

    eval "/bin/sh -c \"$ngx_test\" >> $NGX_AUTOCONF_ERR 2>&1"

    if [ -x $NGX_AUTOTEST ]; then

        echo " found"
        ngx_found=yes

        if test -n "$ngx_feature_name"; then
            have=$ngx_have_feature . auto/have
        fi

    else
        echo " not found"
        echo "----------"     >> $NGX_AUTOCONF_ERR
        cat $NGX_AUTOTEST.cpp >> $NGX_AUTOCONF_ERR
        echo "----------"     >> $NGX_AUTOCONF_ERR
        echo $ngx_test        >> $NGX_AUTOCONF_ERR
        echo "----------"     >> $NGX_AUTOCONF_ERR
    fi

    rm -rf $NGX_AUTOTEST*
}

ngx_feature="re2"
ngx_feature_name=""
ngx_feature_run=no
ngx_feature_incs="#include <re2/re2.h>"
ngx_feature_path="/usr/include"
ngx_feature_libs="-lre2"
ngx_feature_test="RE2::FullMatch(\"hello\", \"h.*o\");"

autocppfeature

if [ $ngx_found = no ]; then

    # FreeBSD port

    ngx_feature="re2 in /usr/local/"
    ngx_feature_path="/usr/local/include"

    if [ $NGX_RPATH = YES ]; then
        ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lre2"
    else
        ngx_feature_libs="-L/usr/local/lib -lre2"
    fi

    autocppfeature
fi

if [ $ngx_found = yes ]; then
    ngx_module_libs="$ngx_module_libs -lre2"
fi

ngx_feature="opentelemetry-cpp"
ngx_feature_name=""
ngx_feature_run=no
ngx_feature_incs="#include <opentelemetry/nostd/string_view.h>
                  typedef opentelemetry::nostd::string_view StrView;"
ngx_feature_path="/usr/include"
ngx_feature_libs="-lopentelemetry_common"
ngx_feature_test="using namespace std;
                  StrView str, prefix;
                  str.substr(0, prefix.size());"

autocppfeature

if [ $ngx_found = no ]; then

    # FreeBSD port

    ngx_feature="opentelemetry in /usr/local/"
    ngx_feature_path="/usr/local/include"

    if [ $NGX_RPATH = YES ]; then
        ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lopentelemetry_common"
    else
        ngx_feature_libs="-L/usr/local/lib -lopentelemetry_common -lopentelemetry_resources -lopentelemetry_trace"
    fi

    autocppfeature
fi

if [ $ngx_found = yes ]; then
    ngx_module_libs="$ngx_module_libs -lopentelemetry_common -lopentelemetry_resources -lopentelemetry_trace"
fi

#if [ ! -d $prefix/include/opentelemetry/proto ]; then
#    echo "Need to install opentelemetry-proto."
#    exit 2
#fi

ngx_feature="protobuf"
ngx_feature_name=""
ngx_feature_run=no
ngx_feature_incs="#include <google/protobuf/stubs/common.h>"
ngx_feature_path="/usr/include"
ngx_feature_libs="-lprotobuf"
ngx_feature_test="using namespace google::protobuf;
                  google::protobuf::internal::VersionString(0);"

autocppfeature

if [ $ngx_found = no ]; then

    # FreeBSD port

    ngx_feature="protobuf in /usr/local/"
    ngx_feature_path="/usr/local/include"

    if [ $NGX_RPATH = YES ]; then
        ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lprotobuf"
    else
        ngx_feature_libs="-L/usr/local/lib -lprotobuf"
    fi

    autocppfeature
fi

if [ $ngx_found = yes ]; then
    ngx_module_libs="$ngx_module_libs -lprotobuf"
fi

ngx_feature="grpc"
ngx_feature_name=""
ngx_feature_run=no
ngx_feature_incs="#include <grpc/support/log.h>"
ngx_feature_path="/usr/include"
ngx_feature_libs="-lgrpc -lgpr -lgrpc++"
ngx_feature_test="gpr_log_verbosity_init();"

autocppfeature

if [ $ngx_found = no ]; then

    # FreeBSD port

    ngx_feature="grpc in /usr/local/"
    ngx_feature_path="/usr/local/include"

    if [ $NGX_RPATH = YES ]; then
        ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lgrpc -lgpr -lgrpc++"
    else
        ngx_feature_libs="-L/usr/local/lib -lgrpc -lgpr -lgrpc++"
    fi

    autocppfeature
fi

if [ $ngx_found = yes ]; then
    ngx_module_libs="$ngx_module_libs -lgrpc -lgpr -lgrpc++"
fi

ngx_module_libs="$ngx_module_libs -lz -lm -lrt -lssl -lcrypto"

. auto/module

CORE_INCS="$CORE_INCS $ngx_feature_path"
OTEL_NGX_SRCS="$ngx_module_srcs"