Description: Restore gpgme integration
Author: Adrian Bunk <bunk@debian.org>
Bug-Debian: https://bugs.debian.org/1024579
Origin: upstream, https://github.com/McKael/mcabber/commit/4c6b38d8772f09ed74daf8310822eeb3fb6ea21b

--- mcabber-1.1.2.orig/macros/gpgme.m4
+++ mcabber-1.1.2/macros/gpgme.m4
@@ -1,5 +1,5 @@
 # gpgme.m4 - autoconf macro to detect GPGME.
-# Copyright (C) 2002, 2003, 2004 g10 Code GmbH
+# Copyright (C) 2002, 2003, 2004, 2014, 2018, 2022 g10 Code GmbH
 #
 # This file is free software; as a special exception the author gives
 # unlimited permission to copy and/or distribute it, with or without
@@ -8,20 +8,138 @@
 # This file is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+#
+# Last-changed: 2024-05-16
+
+
+dnl
+dnl Find gpgrt-config, which uses .pc file
+dnl (minimum pkg-config functionality, supporting cross build)
+dnl
+dnl _AM_PATH_GPGRT_CONFIG
+AC_DEFUN([_AM_PATH_GPGRT_CONFIG],[dnl
+  AC_PATH_PROG(GPGRT_CONFIG, gpgrt-config, no, [$prefix/bin:$PATH])
+  if test "$GPGRT_CONFIG" != "no"; then
+    # Determine gpgrt_libdir
+    #
+    # Get the prefix of gpgrt-config assuming it's something like:
+    #   <PREFIX>/bin/gpgrt-config
+    gpgrt_prefix=${GPGRT_CONFIG%/*/*}
+    possible_libdir1=${gpgrt_prefix}/lib
+    # Determine by using system libdir-format with CC, it's like:
+    #   Normal style: /usr/lib
+    #   GNU cross style: /usr/<triplet>/lib
+    #   Debian style: /usr/lib/<multiarch-name>
+    #   Fedora/openSUSE style: /usr/lib, /usr/lib32 or /usr/lib64
+    # It is assumed that CC is specified to the one of host on cross build.
+    if libdir_candidates=$(${CC:-cc} -print-search-dirs | \
+          sed -n -e "/^libraries/{s/libraries: =//;s/:/\\
+/g;p;}"); then
+      # From the output of -print-search-dirs, select valid pkgconfig dirs.
+      libdir_candidates=$(for dir in $libdir_candidates; do
+        if p=$(cd $dir 2>/dev/null && pwd); then
+          test -d "$p/pkgconfig" && echo $p;
+        fi
+      done)
+
+      for possible_libdir0 in $libdir_candidates; do
+        # possible_libdir0:
+        #   Fallback candidate, the one of system-installed (by $CC)
+        #   (/usr/<triplet>/lib, /usr/lib/<multiarch-name> or /usr/lib32)
+        # possible_libdir1:
+        #   Another candidate, user-locally-installed
+        #   (<gpgrt_prefix>/lib)
+        # possible_libdir2
+        #   Most preferred
+        #   (<gpgrt_prefix>/<triplet>/lib,
+        #    <gpgrt_prefix>/lib/<multiarch-name> or <gpgrt_prefix>/lib32)
+        if test "${possible_libdir0##*/}" = "lib"; then
+          possible_prefix0=${possible_libdir0%/lib}
+          possible_prefix0_triplet=${possible_prefix0##*/}
+          if test -z "$possible_prefix0_triplet"; then
+            continue
+          fi
+          possible_libdir2=${gpgrt_prefix}/$possible_prefix0_triplet/lib
+        else
+          possible_prefix0=${possible_libdir0%%/lib*}
+          possible_libdir2=${gpgrt_prefix}${possible_libdir0#$possible_prefix0}
+        fi
+        if test -f ${possible_libdir2}/pkgconfig/gpg-error.pc; then
+          gpgrt_libdir=${possible_libdir2}
+        elif test -f ${possible_libdir1}/pkgconfig/gpg-error.pc; then
+          gpgrt_libdir=${possible_libdir1}
+        elif test -f ${possible_libdir0}/pkgconfig/gpg-error.pc; then
+          gpgrt_libdir=${possible_libdir0}
+        fi
+        if test -n "$gpgrt_libdir"; then break; fi
+      done
+    fi
+    if test -z "$gpgrt_libdir"; then
+      # No valid pkgconfig dir in any of the system directories, fallback
+      gpgrt_libdir=${possible_libdir1}
+    fi
+  else
+    unset GPGRT_CONFIG
+  fi
 
+  if test -n "$gpgrt_libdir"; then
+    # Add the --libdir option to GPGRT_CONFIG
+    GPGRT_CONFIG="$GPGRT_CONFIG --libdir=$gpgrt_libdir"
+    # Make sure if gpgrt-config really works, by testing config gpg-error
+    if ! $GPGRT_CONFIG gpg-error --exists; then
+      # If it doesn't work, clear the GPGRT_CONFIG variable.
+      unset GPGRT_CONFIG
+    fi
+  else
+    # GPGRT_CONFIG found but no suitable dir for --libdir found.
+    # This is a failure.  Clear the GPGRT_CONFIG variable.
+    unset GPGRT_CONFIG
+  fi
+])
 
-AC_DEFUN([_AM_PATH_GPGME_CONFIG],
-[ AC_ARG_WITH(gpgme-prefix,
-            AC_HELP_STRING([--with-gpgme-prefix=PFX],
-                           [prefix where GPGME is installed (optional)]),
+AC_DEFUN([_AM_PATH_GPGME_CONFIG],[dnl
+AC_REQUIRE([_AM_PATH_GPGRT_CONFIG])dnl
+  AC_ARG_WITH(gpgme-prefix,
+              AS_HELP_STRING([--with-gpgme-prefix=PFX],
+                             [prefix where GPGME is installed (optional)]),
      gpgme_config_prefix="$withval", gpgme_config_prefix="")
-  if test "x$gpgme_config_prefix" != x ; then
-      GPGME_CONFIG="$gpgme_config_prefix/bin/gpgme-config"
+  if test x"${GPGME_CONFIG}" = x ; then
+     if test x"${gpgme_config_prefix}" != x ; then
+        GPGME_CONFIG="${gpgme_config_prefix}/bin/gpgme-config"
+     else
+       case "${SYSROOT}" in
+         /*)
+           if test -x "${SYSROOT}/bin/gpgme-config" ; then
+             GPGME_CONFIG="${SYSROOT}/bin/gpgme-config"
+           fi
+           ;;
+         '')
+           ;;
+          *)
+           AC_MSG_WARN([Ignoring \$SYSROOT as it is not an absolute path.])
+           ;;
+       esac
+     fi
+  fi
+
+  use_gpgrt_config=""
+  if test x"$GPGRT_CONFIG" != x -a "$GPGRT_CONFIG" != "no"; then
+    if $GPGRT_CONFIG gpgme --exists; then
+      GPGME_CONFIG="$GPGRT_CONFIG gpgme"
+      AC_MSG_NOTICE([Use gpgrt-config as gpgme-config])
+      use_gpgrt_config=yes
+    fi
+  fi
+  if test -z "$use_gpgrt_config"; then
+    AC_PATH_PROG(GPGME_CONFIG, gpgme-config, no)
   fi
-  AC_PATH_PROG(GPGME_CONFIG, gpgme-config, no)
 
   if test "$GPGME_CONFIG" != "no" ; then
-    gpgme_version=`$GPGME_CONFIG --version`
+    if test -z "$use_gpgrt_config"; then
+      gpgme_version=`$GPGME_CONFIG --version`
+    else
+      gpgme_version=`$GPGME_CONFIG --modversion`
+    fi
   fi
   gpgme_version_major=`echo $gpgme_version | \
                sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
@@ -31,12 +149,42 @@ AC_DEFUN([_AM_PATH_GPGME_CONFIG],
                sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
 ])
 
+
+AC_DEFUN([_AM_PATH_GPGME_CONFIG_HOST_CHECK],
+[
+    if test -z "$use_gpgrt_config"; then
+      gpgme_config_host=`$GPGME_CONFIG --host 2>/dev/null || echo none`
+    else
+      gpgme_config_host=`$GPGME_CONFIG --variable=host 2>/dev/null || echo none`
+    fi
+    if test x"$gpgme_config_host" != xnone ; then
+      if test x"$gpgme_config_host" != x"$host" ; then
+  AC_MSG_WARN([[
+***
+*** The config script "$GPGME_CONFIG" was
+*** built for $gpgme_config_host and thus may not match the
+*** used host $host.
+*** You may want to use the configure option --with-gpgme-prefix
+*** to specify a matching config script or use \$SYSROOT.
+***]])
+        gpg_config_script_warn="$gpg_config_script_warn gpgme"
+      fi
+    fi
+])
+
+
 dnl AM_PATH_GPGME([MINIMUM-VERSION,
 dnl               [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
 dnl Test for libgpgme and define GPGME_CFLAGS and GPGME_LIBS.
 dnl
+dnl If a prefix option is not used, the config script is first
+dnl searched in $SYSROOT/bin and then along $PATH.  If the used
+dnl config script does not match the host specification the script
+dnl is added to the gpg_config_script_warn variable.
+dnl
 AC_DEFUN([AM_PATH_GPGME],
-[ AC_REQUIRE([_AM_PATH_GPGME_CONFIG])dnl
+[ AC_REQUIRE([AC_CANONICAL_HOST])dnl
+  AC_REQUIRE([_AM_PATH_GPGME_CONFIG])dnl
   tmp=ifelse([$1], ,1:0.4.2,$1)
   if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
      req_gpgme_api=`echo "$tmp"     | sed 's/\(.*\):\(.*\)/\1/'`
@@ -57,7 +205,7 @@ AC_DEFUN([AM_PATH_GPGME],
                sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
     if test "$gpgme_version_major" -gt "$req_major"; then
         ok=yes
-    else 
+    else
         if test "$gpgme_version_major" -eq "$req_major"; then
             if test "$gpgme_version_minor" -gt "$req_minor"; then
                ok=yes
@@ -75,7 +223,11 @@ AC_DEFUN([AM_PATH_GPGME],
      # If we have a recent GPGME, we should also check that the
      # API is compatible.
      if test "$req_gpgme_api" -gt 0 ; then
-        tmp=`$GPGME_CONFIG --api-version 2>/dev/null || echo 0`
+        if test -z "$use_gpgrt_config"; then
+          tmp=`$GPGME_CONFIG --api-version 2>/dev/null || echo 0`
+        else
+          tmp=`$GPGME_CONFIG --variable=api_version 2>/dev/null || echo 0`
+        fi
         if test "$tmp" -gt 0 ; then
            if test "$req_gpgme_api" -ne "$tmp" ; then
              ok=no
@@ -88,6 +240,7 @@ AC_DEFUN([AM_PATH_GPGME],
     GPGME_LIBS=`$GPGME_CONFIG --libs`
     AC_MSG_RESULT(yes)
     ifelse([$2], , :, [$2])
+    _AM_PATH_GPGME_CONFIG_HOST_CHECK
   else
     GPGME_CFLAGS=""
     GPGME_LIBS=""
@@ -98,82 +251,14 @@ AC_DEFUN([AM_PATH_GPGME],
   AC_SUBST(GPGME_LIBS)
 ])
 
-dnl AM_PATH_GPGME_PTH([MINIMUM-VERSION,
-dnl                   [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
-dnl Test for libgpgme and define GPGME_PTH_CFLAGS and GPGME_PTH_LIBS.
-dnl
-AC_DEFUN([AM_PATH_GPGME_PTH],
-[ AC_REQUIRE([_AM_PATH_GPGME_CONFIG])dnl
-  tmp=ifelse([$1], ,1:0.4.2,$1)
-  if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
-     req_gpgme_api=`echo "$tmp"     | sed 's/\(.*\):\(.*\)/\1/'`
-     min_gpgme_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'`
-  else
-     req_gpgme_api=0
-     min_gpgme_version="$tmp"
-  fi
-
-  AC_MSG_CHECKING(for GPGME Pth - version >= $min_gpgme_version)
-  ok=no
-  if test "$GPGME_CONFIG" != "no" ; then
-    if `$GPGME_CONFIG --thread=pth 2> /dev/null` ; then
-      req_major=`echo $min_gpgme_version | \
-               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
-      req_minor=`echo $min_gpgme_version | \
-               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
-      req_micro=`echo $min_gpgme_version | \
-               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
-      if test "$gpgme_version_major" -gt "$req_major"; then
-        ok=yes
-      else 
-        if test "$gpgme_version_major" -eq "$req_major"; then
-          if test "$gpgme_version_minor" -gt "$req_minor"; then
-            ok=yes
-          else
-            if test "$gpgme_version_minor" -eq "$req_minor"; then
-              if test "$gpgme_version_micro" -ge "$req_micro"; then
-                ok=yes
-              fi
-            fi
-          fi
-        fi
-      fi
-    fi
-  fi
-  if test $ok = yes; then
-     # If we have a recent GPGME, we should also check that the
-     # API is compatible.
-     if test "$req_gpgme_api" -gt 0 ; then
-        tmp=`$GPGME_CONFIG --api-version 2>/dev/null || echo 0`
-        if test "$tmp" -gt 0 ; then
-           if test "$req_gpgme_api" -ne "$tmp" ; then
-             ok=no
-           fi
-        fi
-     fi
-  fi
-  if test $ok = yes; then
-    GPGME_PTH_CFLAGS=`$GPGME_CONFIG --thread=pth --cflags`
-    GPGME_PTH_LIBS=`$GPGME_CONFIG --thread=pth --libs`
-    AC_MSG_RESULT(yes)
-    ifelse([$2], , :, [$2])
-  else
-    GPGME_PTH_CFLAGS=""
-    GPGME_PTH_LIBS=""
-    AC_MSG_RESULT(no)
-    ifelse([$3], , :, [$3])
-  fi
-  AC_SUBST(GPGME_PTH_CFLAGS)
-  AC_SUBST(GPGME_PTH_LIBS)
-])
-
 dnl AM_PATH_GPGME_PTHREAD([MINIMUM-VERSION,
 dnl                       [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
 dnl Test for libgpgme and define GPGME_PTHREAD_CFLAGS
 dnl  and GPGME_PTHREAD_LIBS.
 dnl
-AC_DEFUN([AM_PATH_GPGME_PTHREAD],
-[ AC_REQUIRE([_AM_PATH_GPGME_CONFIG])dnl
+AC_DEFUN([AM_PATH_GPGME_PTHREAD],[
+  AC_OBSOLETE([$0], [; use AM_PATH_GPGME instead to use GPGME_CFLAGS and GPGME_LIBS])dnl
+  AC_REQUIRE([_AM_PATH_GPGME_CONFIG])dnl
   tmp=ifelse([$1], ,1:0.4.2,$1)
   if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
      req_gpgme_api=`echo "$tmp"     | sed 's/\(.*\):\(.*\)/\1/'`
@@ -186,35 +271,37 @@ AC_DEFUN([AM_PATH_GPGME_PTHREAD],
   AC_MSG_CHECKING(for GPGME pthread - version >= $min_gpgme_version)
   ok=no
   if test "$GPGME_CONFIG" != "no" ; then
-    if `$GPGME_CONFIG --thread=pthread 2> /dev/null` ; then
-      req_major=`echo $min_gpgme_version | \
+    req_major=`echo $min_gpgme_version | \
                sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
-      req_minor=`echo $min_gpgme_version | \
+    req_minor=`echo $min_gpgme_version | \
                sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
-      req_micro=`echo $min_gpgme_version | \
+    req_micro=`echo $min_gpgme_version | \
                sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
-      if test "$gpgme_version_major" -gt "$req_major"; then
+    if test "$gpgme_version_major" -gt "$req_major"; then
         ok=yes
-      else 
+    else
         if test "$gpgme_version_major" -eq "$req_major"; then
-          if test "$gpgme_version_minor" -gt "$req_minor"; then
-            ok=yes
-          else
-            if test "$gpgme_version_minor" -eq "$req_minor"; then
-              if test "$gpgme_version_micro" -ge "$req_micro"; then
-                ok=yes
-              fi
+            if test "$gpgme_version_minor" -gt "$req_minor"; then
+               ok=yes
+            else
+               if test "$gpgme_version_minor" -eq "$req_minor"; then
+                   if test "$gpgme_version_micro" -ge "$req_micro"; then
+                     ok=yes
+                   fi
+               fi
             fi
-          fi
         fi
-      fi
     fi
   fi
   if test $ok = yes; then
      # If we have a recent GPGME, we should also check that the
      # API is compatible.
      if test "$req_gpgme_api" -gt 0 ; then
-        tmp=`$GPGME_CONFIG --api-version 2>/dev/null || echo 0`
+        if test -z "$use_gpgrt_config"; then
+          tmp=`$GPGME_CONFIG --api-version 2>/dev/null || echo 0`
+        else
+          tmp=`$GPGME_CONFIG --variable=api_version 2>/dev/null || echo 0`
+        fi
         if test "$tmp" -gt 0 ; then
            if test "$req_gpgme_api" -ne "$tmp" ; then
              ok=no
@@ -223,10 +310,11 @@ AC_DEFUN([AM_PATH_GPGME_PTHREAD],
      fi
   fi
   if test $ok = yes; then
-    GPGME_PTHREAD_CFLAGS=`$GPGME_CONFIG --thread=pthread --cflags`
-    GPGME_PTHREAD_LIBS=`$GPGME_CONFIG --thread=pthread --libs`
+    GPGME_PTHREAD_CFLAGS=`$GPGME_CONFIG --cflags`
+    GPGME_PTHREAD_LIBS=`$GPGME_CONFIG --libs`
     AC_MSG_RESULT(yes)
     ifelse([$2], , :, [$2])
+    _AM_PATH_GPGME_CONFIG_HOST_CHECK
   else
     GPGME_PTHREAD_CFLAGS=""
     GPGME_PTHREAD_LIBS=""
@@ -264,7 +352,7 @@ AC_DEFUN([AM_PATH_GPGME_GLIB],
                sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
     if test "$gpgme_version_major" -gt "$req_major"; then
         ok=yes
-    else 
+    else
         if test "$gpgme_version_major" -eq "$req_major"; then
             if test "$gpgme_version_minor" -gt "$req_minor"; then
                ok=yes
@@ -282,7 +370,11 @@ AC_DEFUN([AM_PATH_GPGME_GLIB],
      # If we have a recent GPGME, we should also check that the
      # API is compatible.
      if test "$req_gpgme_api" -gt 0 ; then
-        tmp=`$GPGME_CONFIG --api-version 2>/dev/null || echo 0`
+        if test -z "$use_gpgrt_config"; then
+          tmp=`$GPGME_CONFIG --api-version 2>/dev/null || echo 0`
+        else
+          tmp=`$GPGME_CONFIG --variable=api_version 2>/dev/null || echo 0`
+        fi
         if test "$tmp" -gt 0 ; then
            if test "$req_gpgme_api" -ne "$tmp" ; then
              ok=no
@@ -291,10 +383,23 @@ AC_DEFUN([AM_PATH_GPGME_GLIB],
      fi
   fi
   if test $ok = yes; then
-    GPGME_GLIB_CFLAGS=`$GPGME_CONFIG --glib --cflags`
-    GPGME_GLIB_LIBS=`$GPGME_CONFIG --glib --libs`
+    if test -z "$use_gpgrt_config"; then
+      GPGME_GLIB_CFLAGS=`$GPGME_CONFIG --glib --cflags`
+      GPGME_GLIB_LIBS=`$GPGME_CONFIG --glib --libs`
+    else
+      if $GPGRT_CONFIG gpgme-glib --exists; then
+        GPGME_CONFIG="$GPGRT_CONFIG gpgme-glib"
+        GPGME_GLIB_CFLAGS=`$GPGME_CONFIG --cflags`
+        GPGME_GLIB_LIBS=`$GPGME_CONFIG --libs`
+      else
+        ok = no
+      fi
+    fi
+  fi
+  if test $ok = yes; then
     AC_MSG_RESULT(yes)
     ifelse([$2], , :, [$2])
+    _AM_PATH_GPGME_CONFIG_HOST_CHECK
   else
     GPGME_GLIB_CFLAGS=""
     GPGME_GLIB_LIBS=""
@@ -304,4 +409,3 @@ AC_DEFUN([AM_PATH_GPGME_GLIB],
   AC_SUBST(GPGME_GLIB_CFLAGS)
   AC_SUBST(GPGME_GLIB_LIBS)
 ])
-