Recent changes to bugs

#167 RollingFileAppender does not create a backup file when logging from multiple processes

2026-07-07T20:11:12.927000Z

labels: v1.1.1, windows, win32, rollingfileappender --> v1.1.1, windows, win32, rollingfileappender, v2.2.0.1
status: open --> closed

#167 RollingFileAppender does not create a backup file when logging from multiple processes

2026-07-07T20:10:32.600000Z

This should be fixed by v2.2.0.1: https://github.com/log4cplus/log4cplus/releases/tag/REL_2_2_0_1

#335 AsyncAppender leads to memory leaks

2020-05-22T19:23:17.892000Z

I am observing memory leaks in log4cplus compiled as static library with windows visual studio 2015, since I cannot terminate the thread which needs to run continuosly in a server, should I call log4cplus::threadCleanup() periodically or what ?

#344 liblog4cplus. a linux library - compilation for std=c++11

2019-12-30T05:03:10.658000Z

status: open --> not-a-bug
assigned_to: Václav Haisman

#344 liblog4cplus. a linux library - compilation for std=c++11

2019-07-29T16:45:33.034000Z

Description has changed:

Diff:

--- old
+++ new
@@ -3,7 +3,7 @@
 I am using a Visual Studio GDB project and I have a problem including the liblog4cplus. a static library in  the linker inputs. 
 This are the errors received:

-```
+```text
 ..\..\Dependencies\log4cplus-1.2.1\.libs\liblog4cplus.a(liblog4cplus_la-appender.o): In function `void std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;::_M_construct&lt;char*&gt;(char*, char*, std::forward_iterator_tag)&#39;:
 2&gt;\usr\include\c++\5\bits\basic_string.tcc(223): error : undefined reference to `std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;::_M_create(unsigned long&amp;, unsigned long)&#39;
 2&gt;..\..\..\Dependencies\log4cplus-1.2.1\.libs\liblog4cplus.a(liblog4cplus_la-appender.o): In function `std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;::operator=(std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;&amp;&amp;)&#39;:
@@ -15,7 +15,7 @@
 In order compile the library with c++11 I added the command -std=c++11 in the configure file(CXXFLAGS = &#34;-std=c++11&#34;) 
 This are the parts from configure file which I changed:

-```
+```sh
 fi
 { $as_echo &#34;$as_me:${as_lineno-$LINENO}: result: $ac_cv_cxx_compiler_gnu&#34; &gt;&amp;5
 $as_echo &#34;$ac_cv_cxx_compiler_gnu&#34; &gt;&amp;6; }

#344 liblog4cplus. a linux library - compilation for std=c++11

2019-07-29T16:43:46.629000Z

For 1.2.1, the decision how to compile log4cplus, whether to use C++03 or C++11 is yours. It can be compiled either way. Generally, if you want to change CXXFLAGS you can do so on configure script command line by simply adding CXXFLAGS="-std=c++11" to its command line.

#344 liblog4cplus. a linux library - compilation for std=c++11

2019-07-29T16:39:27.332000Z

Description has changed:

Diff:

--- old
+++ new
@@ -2,17 +2,20 @@

 I am using a Visual Studio GDB project and I have a problem including the liblog4cplus. a static library in  the linker inputs. 
 This are the errors received:
+
+```
 ..\..\Dependencies\log4cplus-1.2.1\.libs\liblog4cplus.a(liblog4cplus_la-appender.o): In function `void std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;::_M_construct&lt;char*&gt;(char*, char*, std::forward_iterator_tag)&#39;:
 2&gt;\usr\include\c++\5\bits\basic_string.tcc(223): error : undefined reference to `std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;::_M_create(unsigned long&amp;, unsigned long)&#39;
 2&gt;..\..\..\Dependencies\log4cplus-1.2.1\.libs\liblog4cplus.a(liblog4cplus_la-appender.o): In function `std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;::operator=(std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;&amp;&amp;)&#39;:
 2&gt;\usr\include\c++\5\bits\basic_string.h(589): error : undefined reference to `std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;::swap(std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;&amp;)&#39;
-
+```

 It seems that the library is not recognised as being compiled with -std=c++11 

 In order compile the library with c++11 I added the command -std=c++11 in the configure file(CXXFLAGS = &#34;-std=c++11&#34;) 
 This are the parts from configure file which I changed:

+```
 fi
 { $as_echo &#34;$as_me:${as_lineno-$LINENO}: result: $ac_cv_cxx_compiler_gnu&#34; &gt;&amp;5
 $as_echo &#34;$ac_cv_cxx_compiler_gnu&#34; &gt;&amp;6; }
@@ -101,6 +104,7 @@
     CXXFLAGS=&#34;-std=c++11&#34;
   fi
 fi
+```

 The commad used to compile the library is:
 sudo ./configure --enable-static

liblog4cplus. a linux library - compilation for std=c++11

2019-07-29T14:53:12.377000Z

Hello,

I am using a Visual Studio GDB project and I have a problem including the liblog4cplus. a static library in the linker inputs.
This are the errors received:
....\Dependencies\log4cplus-1.2.1.libs\liblog4cplus.a(liblog4cplus_la-appender.o): In function void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct<char*>(char*, char*, std::forward_iterator_tag)': 2>\usr\include\c++\5\bits\basic_string.tcc(223): error : undefined reference tostd::cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> >::_M_create(unsigned long&, unsigned long)'
2>......\Dependencies\log4cplus-1.2.1.libs\liblog4cplus.a(liblog4cplus_la-appender.o): In function std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator=(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&)': 2>\usr\include\c++\5\bits\basic_string.h(589): error : undefined reference tostd::</char></char,>cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> >::swap(std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> >&)'</char></char,></char></char,>

It seems that the library is not recognised as being compiled with -std=c++11

In order compile the library with c++11 I added the command -std=c++11 in the configure file(CXXFLAGS = "-std=c++11")
This are the parts from configure file which I changed:

fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cxx_compiler_gnu" >&5
$as_echo "$ac_cv_cxx_compiler_gnu" >&6; }
if test $ac_compiler_gnu = yes; then
GXX=yes
else
GXX=
fi
ac_test_CXXFLAGS=${CXXFLAGS+set}
ac_save_CXXFLAGS=$CXXFLAGS
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX accepts -g" >&5
$as_echo_n "checking whether $CXX accepts -g... " >&6; }
if ${ac_cv_prog_cxx_g+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_save_cxx_werror_flag=$ac_cxx_werror_flag
ac_cxx_werror_flag=yes
ac_cv_prog_cxx_g=no
CXXFLAGS="-g -std=c++11"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/ end confdefs.h. /

int
main ()
{

;
return 0;
}
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
ac_cv_prog_cxx_g=yes
else
CXXFLAGS="-std=c++11"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/ end confdefs.h. /

int
main ()
{

;
return 0;
}
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :

else
ac_cxx_werror_flag=$ac_save_cxx_werror_flag
CXXFLAGS="-g -std=c++11"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/ end confdefs.h. /

int
main ()
{

;
return 0;
}
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
ac_cv_prog_cxx_g=yes
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
ac_cxx_werror_flag=$ac_save_cxx_werror_flag
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cxx_g" >&5
$as_echo "$ac_cv_prog_cxx_g" >&6; }
if test "$ac_test_CXXFLAGS" = set; then
CXXFLAGS=$ac_save_CXXFLAGS
elif test $ac_cv_prog_cxx_g = yes; then
if test "$GXX" = yes; then
CXXFLAGS="-g -O2 -std=c++11"
else
CXXFLAGS="-g -std=c++11"
fi
else
if test "$GXX" = yes; then
CXXFLAGS="-O2 -std=c++11"
else
CXXFLAGS="-std=c++11"
fi
fi

The commad used to compile the library is:
sudo ./configure --enable-static

The compilation worked well.

I am using the log4cpuls 1.2.1 version and the gcc-5.4.0 version to compile the library.
I think the error from visual studio is related to c++11 compilation.
Could you please tell me if the compilation procedure is ok?
If not, please tell which is the right procedure to compile the library for c++11?
Does the errors mean somenthing else?
Please find attached the configure file/

liblog4cplus. a linux library - compilation for std=c++11

2019-07-29T14:53:12.377000Z

Ticket 344 has been modified: liblog4cplus. a linux library - compilation for std=c++11
Edited By: Václav Haisman (wilx)
Description updated:
--- description-old

+++ description-new

@@ -2,17 +2,20 @@

I am using a Visual Studio GDB project and I have a problem including the liblog4cplus. a static library in the linker inputs.
This are the errors received:
+
+..\..\Dependencies\log4cplus-1.2.1\.libs\liblog4cplus.a(liblog4cplus_la-appender.o): In function `void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct<char*>(char*, char*, std::forward_iterator_tag)': 2>\usr\include\c++\5\bits\basic_string.tcc(223): error : undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_create(unsigned long&, unsigned long)' 2>..\..\..\Dependencies\log4cplus-1.2.1\.libs\liblog4cplus.a(liblog4cplus_la-appender.o): In function `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator=(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&)': 2>\usr\include\c++\5\bits\basic_string.h(589): error : undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::swap(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)' - +

It seems that the library is not recognised as being compiled with -std=c++11

In order compile the library with c++11 I added the command -std=c++11 in the configure file(CXXFLAGS = "-std=c++11")
This are the parts from configure file which I changed:

+```
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cxx_compiler_gnu" >&5
$as_echo "$ac_cv_cxx_compiler_gnu" >&6; }
@@ -101,6 +104,7 @@

 CXXFLAGS="-std=c++11"

fi
fi
+```

The commad used to compile the library is:
sudo ./configure --enable-static

liblog4cplus. a linux library - compilation for std=c++11

2019-07-29T14:53:12.377000Z

Ticket 344 has been modified: liblog4cplus. a linux library - compilation for std=c++11
Edited By: Václav Haisman (wilx)
Description updated:
--- description-old

+++ description-new

@@ -3,7 +3,7 @@

I am using a Visual Studio GDB project and I have a problem including the liblog4cplus. a static library in the linker inputs.
This are the errors received:

-+text
....\Dependencies\log4cplus-1.2.1.libs\liblog4cplus.a(liblog4cplus_la-appender.o): In function void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct<char*>(char*, char*, std::forward_iterator_tag)': 2>\usr\include\c++\5\bits\basic_string.tcc(223): error : undefined reference tostd::cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> >::_M_create(unsigned long&, unsigned long)'
2>......\Dependencies\log4cplus-1.2.1.libs\liblog4cplus.a(liblog4cplus_la-appender.o): In function `std::</char></char,>cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> >::operator=(std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> >&&)':
@@ -15,7 +15,7 @@</char></char,></char></char,>

In order compile the library with c++11 I added the command -std=c++11 in the configure file(CXXFLAGS = "-std=c++11")
This are the parts from configure file which I changed:

-+sh
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cxx_compiler_gnu" >&5
$as_echo "$ac_cv_cxx_compiler_gnu" >&6; }