From 675d6ec5e6d9dc51b0ff9ad28c0e901a7516e2ef Mon Sep 17 00:00:00 2001
From: Yang Tse <yangsita@gmail.com>
Date: Tue, 26 May 2009 14:50:45 +0000
Subject: c-ares's --enable-curldebug configure option decoupled from c-ares's
 --enable-debug

---
 ares/m4/cares-compilers.m4 | 100 ++++++++++++++++++++++++++++++++++-----------
 1 file changed, 76 insertions(+), 24 deletions(-)

(limited to 'ares/m4/cares-compilers.m4')

diff --git a/ares/m4/cares-compilers.m4 b/ares/m4/cares-compilers.m4
index 5e5b3a82c..50c73c679 100644
--- a/ares/m4/cares-compilers.m4
+++ b/ares/m4/cares-compilers.m4
@@ -16,7 +16,7 @@
 #***************************************************************************
 
 # File version for 'aclocal' use. Keep it a single number.
-# serial 51
+# serial 52
 
 
 dnl CARES_CHECK_COMPILER
@@ -1070,36 +1070,88 @@ squeeze() {
 ])
 
 
-dnl CARES_PROCESS_DEBUG_BUILD_OPTS
+dnl CARES_CHECK_CURLDEBUG
 dnl -------------------------------------------------
-dnl Settings which depend on configure's debug given
-dnl option, and further configure the build process.
-dnl Don't use this macro for compiler dependant stuff.
-
-AC_DEFUN([CARES_PROCESS_DEBUG_BUILD_OPTS], [
-  AC_REQUIRE([CARES_CHECK_OPTION_DEBUG])dnl
+dnl Settings which depend on configure's curldebug given
+dnl option, and other additional configure pre-requisites.
+dnl Using the curl debug memory tracking feature in c-ares
+dnl is a hack that actually can only be used/enabled when
+dnl c-ares is built as a static library directly in curl's
+dnl CVS tree along with an equally configured libcurl.
+
+AC_DEFUN([CARES_CHECK_CURLDEBUG], [
   AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl
-  AC_BEFORE([$0],[AC_PROG_LIBTOOL])dnl
+  cares_builddir=`pwd`
+  supports_curldebug="unknown"
+  if test "$want_curldebug" = "yes"; then
+    if test "x$enable_shared" != "xno" &&
+      test "x$enable_shared" != "xyes"; then
+      AC_MSG_WARN([unknown enable_shared setting.])
+      supports_curldebug="no"
+    fi
+    if test "x$enable_static" != "xno" &&
+      test "x$enable_static" != "xyes"; then
+      AC_MSG_WARN([unknown enable_static setting.])
+      supports_curldebug="no"
+    fi
+    if test "$supports_curldebug" != "no"; then
+      if test "$enable_shared" != "no"; then
+        AC_MSG_WARN([configured to build shared library.])
+        supports_curldebug="no"
+      fi
+      if test "$enable_static" != "yes"; then
+        AC_MSG_WARN([configured to build no static library.])
+        supports_curldebug="no"
+      fi
+      if test ! -f "$srcdir/../include/curl/curlbuild.h.dist"; then
+        AC_MSG_WARN([source not embedded in curl's CVS tree.])
+        supports_curldebug="no"
+      elif test ! -f "$srcdir/../include/curl/Makefile.in"; then
+        AC_MSG_WARN([curl's buildconf has not been run.])
+        supports_curldebug="no"
+      elif test ! -f "$cares_builddir/../libcurl.pc" ||
+        test ! -f "$cares_builddir/../include/curl/curlbuild.h"; then
+        AC_MSG_WARN([curl's configure has not been run.])
+        supports_curldebug="no"
+      elif test ! -f "$cares_builddir/../lib/config.h"; then
+        AC_MSG_WARN([libcurl's config.h is missing.])
+        supports_curldebug="no"
+      elif test ! -f "$cares_builddir/../config.status"; then
+        AC_MSG_WARN([curl's config.status is missing.])
+        supports_curldebug="no"
+      fi
+      if test "$supports_curldebug" != "no"; then
+        grep '^#define USE_ARES' "$cares_builddir/../lib/config.h" >/dev/null
+        if test "$?" -ne "0"; then
+          AC_MSG_WARN([libcurl configured without c-ares support.])
+          supports_curldebug="no"
+        fi
+      fi
+      if test "$supports_curldebug" != "no"; then
+        grep 'CPPFLAGS.*CURLDEBUG' "$cares_builddir/../config.status" >/dev/null
+        if test "$?" -ne "0"; then
+          AC_MSG_WARN([libcurl configured without curldebug support.])
+          supports_curldebug="no"
+        fi
+      fi
+    fi
+  fi
   #
-  if test "$want_debug" = "yes"; then
-
-    dnl when doing the debug stuff, use static library only
-    AC_DISABLE_SHARED
-
-    debugbuild="yes"
-
-    dnl the entire --enable-debug is a hack that lives and runs on top of
-    dnl libcurl stuff so this BUILDING_LIBCURL is not THAT much uglier
+  if test "$want_curldebug" = "yes"; then
+    AC_MSG_CHECKING([if curl debug memory tracking can be enabled])
+    test "$supports_curldebug" = "no" || supports_curldebug="yes"
+    AC_MSG_RESULT([$supports_curldebug])
+    if test "$supports_curldebug" = "no"; then
+      AC_MSG_WARN([cannot enable curl debug memory tracking.])
+      want_curldebug="no"
+    fi
+  fi
+  #
+  if test "$want_curldebug" = "yes"; then
     AC_DEFINE(BUILDING_LIBCURL, 1, [when building as static part of libcurl])
-
     CPPFLAGS="$CPPFLAGS -DCURLDEBUG"
-
-    dnl CHECKME: Do we still need so specify this include path here?
-    CPPFLAGS="$CPPFLAGS -I$srcdir/../include"
-
     squeeze CPPFLAGS
   fi
-  #
 ])
 
 
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