diff --git a/ports/gmp/build.sh b/ports/gmp/build.sh
new file mode 100755
index 00000000..44fc2a83
--- /dev/null
+++ b/ports/gmp/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash ../install.sh
+
+NAME='gmp'
+VERSION='6.3.0'
+DOWNLOAD_URL="https://ftp.gnu.org/gnu/gmp/gmp-$VERSION.tar.xz#a3c2b80201b89e68616f4ad30bc66aee4927c3ce50e33929ca819d5c43538898"
diff --git a/ports/gmp/patches/0001-add-banan_os-target.patch b/ports/gmp/patches/0001-add-banan_os-target.patch
new file mode 100644
index 00000000..671e3d3e
--- /dev/null
+++ b/ports/gmp/patches/0001-add-banan_os-target.patch
@@ -0,0 +1,12 @@
+diff -ruN gmp-6.3.0/configfsf.sub gmp-6.3.0-banan_os/configfsf.sub
+--- gmp-6.3.0/configfsf.sub	2023-07-29 16:42:16.000000000 +0300
++++ gmp-6.3.0-banan_os/configfsf.sub	2024-08-07 21:37:12.147551767 +0300
+@@ -1759,7 +1759,7 @@
+ 	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
+ 	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
+ 	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx* | zephyr* \
+-	     | fiwix* | mlibc* )
++	     | fiwix* | mlibc* | banan_os* )
+ 		;;
+ 	# This one is extra strict with allowed versions
+ 	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)