diff --git a/P/p7zip_alone2/build_tarballs.jl b/P/p7zip_alone2/build_tarballs.jl
new file mode 100644
index 00000000000..a466dbdeb99
--- /dev/null
+++ b/P/p7zip_alone2/build_tarballs.jl
@@ -0,0 +1,82 @@
+using BinaryBuilder, Pkg
+
+const YGGDRASIL_DIR = "../.."
+include(joinpath(YGGDRASIL_DIR, "platforms", "macos_sdks.jl"))
+
+name = "p7zip_alone2"
+# This package is closely related to p7zip
+# p7zip builds the Alone bundle to provide 7za.exe which supports only the major formats.
+# p7zip_alone2 builds the Alone2 bundle to provide 7zz.exe which supports the full set of formats except RAR.
+upstream_version = "25.01"
+compact_version = replace(upstream_version, "."=>"")
+# Upstream uses CalVer
+# This package uses an independent SemVer version number
+# to avoid dependent packages needing to update compat every year
+# even if there are no breaking changes.
+version = v"1.0.0"
+
+# Collection of sources required to build p7zip
+sources = [
+    ArchiveSource("https://downloads.sourceforge.net/project/sevenzip/7-Zip/$(upstream_version)/7z$(compact_version)-src.tar.xz",
+                  "ed087f83ee789c1ea5f39c464c55a5c9d4008deb0efe900814f2df262b82c36e";
+                  unpack_target="7z"),
+]
+
+# Bash recipe for building across all platforms
+script = raw"""
+cd 7z/CPP/7zip/Bundles/Alone2
+
+# Lowercase names for MinGW
+sed -i "s/NTSecAPI.h/ntsecapi.h/" ../../../Windows/SecurityUtils.h
+sed -i 's/-lUser32/-luser32/g' ../../7zip_gcc.mak
+sed -i 's/-lOle32/-lole32/g' ../../7zip_gcc.mak
+sed -i 's/-lGdi32/-lgdi32/g' ../../7zip_gcc.mak
+sed -i 's/-lComctl32/-lcomctl32/g' ../../7zip_gcc.mak
+sed -i 's/-lComdlg32/-lcomdlg32/g' ../../7zip_gcc.mak
+sed -i 's/-lShell32/-lshell32/g' ../../7zip_gcc.mak
+
+# RAR has a custom license
+export DISABLE_RAR=1
+
+if [[ "${target}" == *-mingw* ]]; then
+    export IS_MINGW=1
+    export RC=windres
+fi
+
+if [[ "${target}" == x86_64-apple-darwin* ]]; then
+    # For some reason USE_ASM doesn't work on this platform
+    make -j${nproc} -f makefile.gcc
+else
+    if [[ "${target}" == x86_64-* ]]; then
+        make -j${nproc} -f makefile.gcc IS_X64=1 USE_ASM=1 MY_ASM="uasm"
+    elif [[ "${target}" == aarch64-* ]]; then
+        make -j${nproc} -f makefile.gcc IS_ARM64=1 USE_ASM=1
+    else
+        make -j${nproc} -f makefile.gcc
+    fi
+fi
+
+install -Dvm 755 _o/7zz${exeext} "${bindir}/7zz${exeext}"
+install_license ../../../../DOC/copying.txt
+install_license ../../../../DOC/License.txt
+"""
+
+# Require MacOS 10.13 or later to support utimensat
+sources, script = require_macos_sdk("10.13", sources, script)
+
+platforms = supported_platforms()
+
+# The products that we will ensure are always built
+products = [
+    ExecutableProduct("7zz", :p7zz),
+]
+
+# Dependencies that must be installed before this package can be built
+dependencies = [
+    HostBuildDependency(PackageSpec(name="UASM_jll", uuid="bbf38c07-751d-5a2b-a7fc-5c0acd9bd57e")),
+    Dependency(PackageSpec(name="CompilerSupportLibraries_jll", uuid="e66e0078-7015-5450-92f7-15fbd957f2ae")),
+]
+build_tarballs(ARGS, name, version, sources, script, platforms, products, dependencies;
+    julia_compat="1.6",                    # Minimum Julia version
+    preferred_gcc_version=v"8",            # GCC version
+)