config

ngx_addon_name=ngx_postgres_module

# Finding libpq, in this order:
#
#   1. LIBPQ_INC and LIBPQ_LIB, when the person building says where it is
#   2. pg_config, which is the answer on any system that has a PostgreSQL
#      client installed -- including FreeBSD, where the ports tree puts it
#      under the package prefix and the guesses below would miss it
#   3. the compiler's own search path
#   4. the places the usual systems put it
#
# Every PQ function this module calls has been in libpq since 8.0, so there
# is no version to detect.  Upstream had six probes for 9.1 through 9.6
# here; none of them ever ran, because they were all guarded by
# "if [ $ngx_found = no ]" after the search above had already set it to yes,
# and the version they would have found was written into a variable nothing
# reads.  The error message that followed -- "unable to detect version of
# the libpq library" -- could therefore never appear either.

ngx_feature_name=
ngx_feature_run=no
ngx_feature_incs="#include <libpq-fe.h>"
ngx_feature_test="(void) PQconndefaults();"

ngx_postgres_libs() {
    if [ "$NGX_RPATH" = YES ]; then
        echo "-R$1 -L$1 -lpq"
    else
        echo "-L$1 -lpq"
    fi
}

if [ -n "$LIBPQ_INC" ] || [ -n "$LIBPQ_LIB" ]; then
    ngx_feature="libpq library in LIBPQ_INC ($LIBPQ_INC) and LIBPQ_LIB ($LIBPQ_LIB)"
    ngx_feature_path="$LIBPQ_INC"
    ngx_feature_libs=$(ngx_postgres_libs "$LIBPQ_LIB")
    . auto/feature
else
    if [ -z "$PG_CONFIG" ]; then
        PG_CONFIG=pg_config
    fi

    if type "$PG_CONFIG" > /dev/null 2>&1; then
        ngx_feature="libpq library (via $PG_CONFIG)"
        ngx_feature_path="$($PG_CONFIG --includedir)"
        ngx_feature_libs=$(ngx_postgres_libs "$($PG_CONFIG --libdir)")
        . auto/feature
    fi

    if [ $ngx_found = no ]; then
        ngx_feature="libpq library"
        ngx_feature_path=
        ngx_feature_libs="-lpq"
        . auto/feature
    fi

    if [ $ngx_found = no ]; then
        # Debian and its relatives
        ngx_feature="libpq library in /usr/include/postgresql"
        ngx_feature_path="/usr/include/postgresql"
        ngx_feature_libs="-lpq"
        . auto/feature
    fi

    if [ $ngx_found = no ]; then
        # FreeBSD, when pg_config is not on the path
        ngx_feature="libpq library in /usr/local"
        ngx_feature_path="/usr/local/include"
        ngx_feature_libs=$(ngx_postgres_libs /usr/local/lib)
        . auto/feature
    fi

    if [ $ngx_found = no ]; then
        # OpenBSD
        ngx_feature="libpq library in /usr/local/include/postgresql"
        ngx_feature_path="/usr/local/include/postgresql"
        ngx_feature_libs=$(ngx_postgres_libs /usr/local/lib)
        . auto/feature
    fi

    if [ $ngx_found = no ]; then
        # NetBSD
        ngx_feature="libpq library in /usr/pkg"
        ngx_feature_path="/usr/pkg/include"
        ngx_feature_libs=$(ngx_postgres_libs /usr/pkg/lib)
        . auto/feature
    fi

    if [ $ngx_found = no ]; then
        # MacPorts
        ngx_feature="libpq library in /opt/local"
        ngx_feature_path="/opt/local/include"
        ngx_feature_libs=$(ngx_postgres_libs /opt/local/lib)
        . auto/feature
    fi
fi

if [ $ngx_found = no ]; then
    cat << END
$0: error: ngx_postgres_module requires libpq.  Install a PostgreSQL client,
or say where it is:
    LIBPQ_INC=/path/include LIBPQ_LIB=/path/lib ./configure --add-module=...
or point it at a pg_config:
    PG_CONFIG=/path/bin/pg_config ./configure --add-module=...
END
    exit 1
fi

NGX_POSTGRES_SRCS="                                                         \
            $ngx_addon_dir/src/ngx_postgres_escape.c                        \
            $ngx_addon_dir/src/ngx_postgres_handler.c                       \
            $ngx_addon_dir/src/ngx_postgres_keepalive.c                     \
            $ngx_addon_dir/src/ngx_postgres_module.c                        \
            $ngx_addon_dir/src/ngx_postgres_output.c                        \
            $ngx_addon_dir/src/ngx_postgres_processor.c                     \
            $ngx_addon_dir/src/ngx_postgres_rewrite.c                       \
            $ngx_addon_dir/src/ngx_postgres_upstream.c                      \
            $ngx_addon_dir/src/ngx_postgres_util.c                          \
            $ngx_addon_dir/src/ngx_postgres_variable.c                      \
            "

NGX_POSTGRES_DEPS="                                                         \
            $ngx_addon_dir/src/ngx_postgres_ddebug.h                        \
            $ngx_addon_dir/src/ngx_postgres_escape.h                        \
            $ngx_addon_dir/src/ngx_postgres_handler.h                       \
            $ngx_addon_dir/src/ngx_postgres_keepalive.h                     \
            $ngx_addon_dir/src/ngx_postgres_module.h                        \
            $ngx_addon_dir/src/ngx_postgres_output.h                        \
            $ngx_addon_dir/src/ngx_postgres_processor.h                     \
            $ngx_addon_dir/src/ngx_postgres_rewrite.h                       \
            $ngx_addon_dir/src/ngx_postgres_upstream.h                      \
            $ngx_addon_dir/src/ngx_postgres_util.h                          \
            $ngx_addon_dir/src/ngx_postgres_variable.h                      \
            $ngx_addon_dir/src/resty_dbd_stream.h                           \
            "

if [ -n "$ngx_module_link" ]; then
    ngx_module_type=HTTP
    ngx_module_name=$ngx_addon_name
    ngx_module_srcs="$NGX_POSTGRES_SRCS"
    ngx_module_deps="$NGX_POSTGRES_DEPS"
    ngx_module_incs="$ngx_feature_path"

    # libpq belongs to this module alone, so it goes on this module's line
    # and not into CORE_LIBS, where it would be linked into every other
    # dynamic module of the same build as well.
    ngx_module_libs="$ngx_feature_libs"

    . auto/module

    # auto/module keeps ngx_module_incs and ngx_module_libs per module only
    # for a dynamic build.  A module compiled into the binary takes the
    # global lists, so they have to be added here.
    if [ "$ngx_module_link" != DYNAMIC ]; then
        CORE_INCS="$CORE_INCS $ngx_feature_path"
        CORE_LIBS="$CORE_LIBS $ngx_feature_libs"
    fi
else
    HTTP_MODULES="$HTTP_MODULES $ngx_addon_name"
    NGX_ADDON_SRCS="$NGX_ADDON_SRCS $NGX_POSTGRES_SRCS"
    NGX_ADDON_DEPS="$NGX_ADDON_DEPS $NGX_POSTGRES_DEPS"
    CORE_INCS="$CORE_INCS $ngx_feature_path"
    CORE_LIBS="$CORE_LIBS $ngx_feature_libs"
fi

# Other modules check for this, ngx_rds_json among them.
have=NGX_POSTGRES_MODULE . auto/have