diff --git a/23e51ef7a8e8e4ba42208936e0a6a25901f58c65.patch b/23e51ef7a8e8e4ba42208936e0a6a25901f58c65.patch
new file mode 100644
index 0000000000000000000000000000000000000000..cb782cada4696c50d19df0869ffe31e97ae3388a
--- /dev/null
+++ b/23e51ef7a8e8e4ba42208936e0a6a25901f58c65.patch
@@ -0,0 +1,22 @@
+From 23e51ef7a8e8e4ba42208936e0a6a25901f58c65 Mon Sep 17 00:00:00 2001
+From: Martin Whitaker <icarus@martin-whitaker.me.uk>
+Date: Sat, 31 Dec 2022 16:51:28 +0000
+Subject: [PATCH] Fix compilation with -Werror=format-security.
+
+---
+ pform_package.cc | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/pform_package.cc b/pform_package.cc
+index 856f8c103..3006ab58e 100644
+--- a/pform_package.cc
++++ b/pform_package.cc
+@@ -62,7 +62,7 @@ void pform_end_package_declaration(const struct vlltype&loc)
+ 	    ostringstream msg;
+ 	    msg << "error: Package " << use_name << " was already declared here: "
+ 		<< test->second->get_fileline() << ends;
+-	    VLerror(loc, msg.str().c_str());
++	    VLerror(loc, "%s", msg.str().c_str());
+       }
+ 
+ 
diff --git a/iverilog-12_0.tar.gz b/iverilog-12_0.tar.gz
new file mode 100644
index 0000000000000000000000000000000000000000..cd1eb584be35ff426cea8de0607bc0e8b48aabc2
Binary files /dev/null and b/iverilog-12_0.tar.gz differ
diff --git a/iverilog.spec b/iverilog.spec
new file mode 100644
index 0000000000000000000000000000000000000000..b0fcac4946d4fdaf1c1a0eb8cb4d067ddf2a178c
--- /dev/null
+++ b/iverilog.spec
@@ -0,0 +1,78 @@
+Name:        iverilog
+Version:     12.0
+%define uver 12_0
+Release:     2%{?dist}
+Summary:     Icarus Verilog is a verilog compiler and simulator
+License:     GPLv2
+URL:         https://github.com/steveicarus/iverilog
+Source0:     https://github.com/steveicarus/iverilog/archive/%{name}-%{uver}.tar.gz
+
+# [PATCH] Fix compilation with -Werror=format-security
+Patch1:      23e51ef7a8e8e4ba42208936e0a6a25901f58c65.patch
+
+BuildRequires: autoconf
+BuildRequires: bzip2-devel
+BuildRequires: bison
+BuildRequires: flex
+BuildRequires: gperf
+BuildRequires: gcc-c++
+BuildRequires: readline-devel
+BuildRequires: zlib-devel
+BuildRequires: make
+
+ 
+%description
+Icarus Verilog is a Verilog compiler that generates a variety of
+engineering formats, including simulation. It strives to be true
+to the IEEE-1364 standard.
+ 
+%prep
+%autosetup -n %{name}-%{uver}
+# Clean junks from tarball
+find . -type f -name ".git" -exec rm '{}' \;
+rm -rf `find . -type d -name "autom4te.cache" -exec echo '{}' \;`
+
+%build
+chmod +x autoconf.sh
+sh autoconf.sh
+export CPPFLAGS="$CPPFLAGS -fcommon"
+%configure
+
+# use make, avoid use V=1 due https://github.com/steveicarus/iverilog/issues/262
+make %{?_smp_mflags}
+
+ 
+%install
+%{__make}    prefix=%{buildroot}%{_prefix} \
+             bindir=%{buildroot}%{_bindir} \
+             libdir=%{buildroot}%{_libdir} \
+             libdir64=%{buildroot}%{_libdir} \
+             includedir=%{buildroot}%{_includedir} \
+             mandir=%{buildroot}%{_mandir}  \
+             vpidir=%{buildroot}%{_libdir}/ivl/ \
+             INSTALL="install -p" \
+install
+ 
+%check
+make check
+ 
+ 
+%files
+%doc BUGS.txt QUICK_START.txt
+%doc ieee1364-notes.txt mingw.txt swift.txt netlist.txt
+%doc t-dll.txt vpi.txt cadpli/cadpli.txt
+%doc xilinx-hint.txt examples/
+%doc va_math.txt tgt-fpga/fpga.txt extensions.txt glossary.txt attributes.txt
+%license COPYING
+%{_bindir}/*
+%{_libdir}/ivl
+%{_mandir}/man1/*
+# headers for PLI: This is intended to be used by the user.
+%{_includedir}/*.h
+# RHBZ 480531
+%{_libdir}/*.a
+ 
+ 
+%changelog
+* Thu Jun 20 2024 liping <1477412247@qq.com> - 12.0-2
+- Package init
diff --git a/iverilog.yaml b/iverilog.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..51bd32b35b39fb5bb1619e8e7a42ff537d422fe0
--- /dev/null
+++ b/iverilog.yaml
@@ -0,0 +1,5 @@
+version_control: github
+src_repo:
+tag_prefix:
+separator:
+url: https://github.com/steveicarus/iverilog