diff --git a/mimetic-0.9.8-signedness-fix.patch b/mimetic-0.9.8-signedness-fix.patch
new file mode 100644
index 0000000..e5fc95a
--- /dev/null
+++ b/mimetic-0.9.8-signedness-fix.patch
@@ -0,0 +1,31 @@
+* Signedness fix for 0.9.8 version (denis@fateyev.com)
+--- a/mimetic/codec/base64.cxx	2016-03-03 07:05:58.587129195 +0600
++++ b/mimetic/codec/base64.cxx	2016-03-03 07:06:32.213128743 +0600
+@@ -8,12 +8,12 @@
+ 
+ using namespace mimetic;
+ 
+-const char Base64::sEncTable[] = 
++const signed char Base64::sEncTable[] = 
+     "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+     "abcdefghijklmnopqrstuvwxyz"
+     "0123456789+/=";
+ 
+-const char Base64::sDecTable[] = {
++const signed char Base64::sDecTable[] = {
+         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+--- a/mimetic/codec/base64.h	2016-03-03 07:13:26.405123140 +0600
++++ b/mimetic/codec/base64.h	2016-03-03 07:14:34.629121732 +0600
+@@ -19,8 +19,8 @@
+     enum { LF = 0xA, CR = 0xD, NL = '\n' };
+     enum { default_maxlen = 76 };
+     enum { eq_sign = 100 };
+-    static const char sEncTable[];
+-    static const char sDecTable[];
++    static const signed char sEncTable[];
++    static const signed char sDecTable[];
+     static const int sDecTableSz;
+ public:
+     class Encoder; class Decoder;
diff --git a/mimetic-0.9.8.tar.gz b/mimetic-0.9.8.tar.gz
new file mode 100644
index 0000000..d89e197
Binary files /dev/null and b/mimetic-0.9.8.tar.gz differ
diff --git a/mimetic-gcc11.patch b/mimetic-gcc11.patch
new file mode 100644
index 0000000..643d749
--- /dev/null
+++ b/mimetic-gcc11.patch
@@ -0,0 +1,13 @@
+diff --git a/mimetic/os/mmfile.cxx b/mimetic/os/mmfile.cxx
+index dfc95b7..3e54a53 100644
+--- a/mimetic/os/mmfile.cxx
++++ b/mimetic/os/mmfile.cxx
+@@ -57,7 +57,7 @@ bool MMFile::open(int mode)
+ bool MMFile::map()
+ {
+     m_beg = (char*) mmap(0, m_st.st_size, PROT_READ, MAP_SHARED,m_fd,0);
+-    if(m_beg > 0)
++    if(m_beg != 0)
+     {
+         m_end = m_beg + m_st.st_size;
+         #if HAVE_MADVISE
diff --git a/mimetic.spec b/mimetic.spec
new file mode 100644
index 0000000..6689165
--- /dev/null
+++ b/mimetic.spec
@@ -0,0 +1,71 @@
+Name:           mimetic
+Version:        0.9.8
+Release:        1
+Summary:        A full featured C++ MIME library
+License:        MIT
+URL:            http://www.codesink.org/mimetic_mime_library.html
+
+Source0:        http://www.codesink.org/download/mimetic-%{version}.tar.gz
+Patch0:         mimetic-%{version}-signedness-fix.patch
+Patch1:         mimetic-gcc11.patch
+
+BuildRequires:  gcc-c++
+BuildRequires:  doxygen
+BuildRequires:  findutils
+BuildRequires:  make
+
+%description
+mimetic is an Email library (MIME) written in C++ designed to be easy to use 
+and integrate but yet fast and efficient.
+
+It has been built around the standard lib. This means that you'll not find yet
+another string class or list implementation and that you'll feel comfortable 
+in using this library from the very first time. 
+
+Most classes functionalities and behavior will be clear if you ever studied 
+MIME and its components; if you don't know anything about Internet messages 
+you'll probably want to read some RFCs to understand the topic and, therefore,
+easily use the library whose names, whenever possible, overlap terms adopted 
+in the standard RFC documents. At the very least: RFC 822, RFC 2045 and RFC 
+2046.
+
+%package        devel
+Summary:        Development files for %{name}
+Requires:       %{name}%{?_isa} = %{version}-%{release}
+
+%description    devel
+This package contains libraries and header files for
+developing applications that use %{name}.
+
+%prep
+%setup -q
+%patch0 -p1
+%patch1 -p1
+
+%build
+%configure --disable-static
+make %{?_smp_mflags}
+make docs -C doc
+
+%install
+%make_install
+find %{buildroot} -name '*.*a' -delete -print
+
+%check
+make check
+
+%ldconfig_scriptlets
+
+%files
+%license COPYING LICENSE
+%doc AUTHORS ChangeLog README
+%{_libdir}/libmimetic.so.*
+
+%files devel
+%doc doc/html/*
+%{_includedir}/mimetic/
+%{_libdir}/libmimetic.so
+
+%changelog
+* Mon Jul 25 2022 loong_C <loong_c@yeah.net> - 0.9.8-1
+- Initial Package.