# Copyright (C) Igor Sysoev
# Copyright (C) NGINX, Inc.

NJS_PCRE_CFLAGS=
NJS_PCRE_LIB=

NJS_HAVE_PCRE=NO

if [ $NJS_PCRE = YES ]; then

    njs_found=no

    if [ $NJS_TRY_PCRE2 = YES ]; then

        njs_feature="PCRE2 library"
        njs_feature_name=NJS_HAVE_PCRE2
        njs_feature_run=no
        njs_feature_incs=
        njs_feature_libs=
        njs_feature_test="#define PCRE2_CODE_UNIT_WIDTH 8
                          #include <pcre2.h>

                          int main(void) {
                              pcre2_code  *re;

                              re = pcre2_compile((PCRE2_SPTR)\"\",
                                                 PCRE2_ZERO_TERMINATED, 0,
                                                 NULL, NULL, NULL);
                              return (re == NULL);
                          }"

        . auto/feature

         if [ $njs_found = no ]; then

            # pcre2-config

            if /bin/sh -c "(pcre2-config --version)" >> $NJS_AUTOCONF_ERR 2>&1; then

                NJS_PCRE_CFLAGS=`pcre2-config --cflags`
                NJS_PCRE_LIB=`pcre2-config --libs8`

                njs_feature="PCRE2 library in `pcre2-config --prefix 2>/dev/null`"
                njs_feature_incs=$NJS_PCRE_CFLAGS
                njs_feature_libs=$NJS_PCRE_LIB

                . auto/feature
            fi

         fi

        if [ $njs_found = yes ]; then
            njs_feature="PCRE2 version"
            njs_feature_name=NJS_PCRE2_VERSION
            njs_feature_run=value
            njs_feature_test="#define PCRE2_CODE_UNIT_WIDTH 8
                              #include <pcre2.h>
                              #include <stdio.h>

                              int main(void) {
                                  printf(\"%d.%d\", PCRE2_MAJOR, PCRE2_MINOR);
                                  return 0;
                              }"

            . auto/feature

            NJS_HAVE_PCRE=YES
        fi
    fi

    if [ $njs_found = no ]; then

        njs_feature="PCRE library"
        njs_feature_name=NJS_HAVE_PCRE
        njs_feature_run=no
        njs_feature_incs=
        njs_feature_libs=
        njs_feature_test="#include <pcre.h>

                          int main(void) {
                              pcre  *re;

                              re = pcre_compile(NULL, 0, NULL, 0, NULL);
                              if (re == NULL)
                                  return 1;
                              return 0;
                          }"

        . auto/feature

         if [ $njs_found = no ]; then

            # pcre-config

            njs_pcre_prefix=`pcre-config --prefix 2>/dev/null`

            if [ -n "$njs_pcre_prefix" ]; then

                NJS_PCRE_CFLAGS=`pcre-config --cflags`
                NJS_PCRE_LIB=`pcre-config --libs`

                njs_feature="PCRE library in $njs_pcre_prefix"
                njs_feature_incs="$NJS_PCRE_CFLAGS"
                njs_feature_libs=$NJS_PCRE_LIB

                . auto/feature
            fi
        fi

        if [ $njs_found = yes ]; then
            njs_feature="PCRE version"
            njs_feature_name=NJS_PCRE_VERSION
            njs_feature_run=value
            njs_feature_test="#include <pcre.h>
                              #include <stdio.h>

                              int main(void) {
                                  printf(\"%d.%d\", PCRE_MAJOR, PCRE_MINOR);
                                  return 0;
                              }"

            . auto/feature

            NJS_HAVE_PCRE=YES
        fi
    fi

    if [ $njs_found = no ]; then
        echo
        echo $0: error: no PCRE library found.
        echo
        exit 1;
    fi

fi

NJS_LIB_AUX_CFLAGS="$NJS_LIB_AUX_CFLAGS $NJS_PCRE_CFLAGS"
NJS_LIB_AUX_LIBS="$NJS_LIB_AUX_LIBS $NJS_PCRE_LIB"