diff --git a/submodules/ffmpeg/BUCK b/submodules/ffmpeg/BUCK
index aed1b5364a..19a4d37012 100644
--- a/submodules/ffmpeg/BUCK
+++ b/submodules/ffmpeg/BUCK
@@ -113,7 +113,9 @@ genrule(
     srcs = glob([
         "FFMpeg/**/*",
     ], exclude = ["FFMpeg/**/.*"]),
-    bash = "$SRCDIR/FFMpeg/build-ffmpeg.sh release \"" + library_archs + "\" $OUT $SRCDIR/FFMpeg",
+    bash =
+        "PATH=\"$PATH:$(location //third-party/yasm:yasm)/yasm-1.3.0/build\" " +
+        "$SRCDIR/FFMpeg/build-ffmpeg.sh release \"" + library_archs + "\" $OUT $SRCDIR/FFMpeg",
     out = "libffmpeg",
     visibility = [
         "//submodules/ffmpeg:FFMpeg",
diff --git a/submodules/ton/BUCK b/submodules/ton/BUCK
index 1829fad04f..11b04572d7 100644
--- a/submodules/ton/BUCK
+++ b/submodules/ton/BUCK
@@ -46,7 +46,11 @@ genrule(
         "tonlib-src",
         "iOS.cmake"
     ],
-    bash = "sh $SRCDIR/build-ton.sh $OUT $SRCDIR $(location //submodules/openssl:openssl_build_merged)",
+    bash =
+"""
+    export PATH=\"$PATH:$(location //third-party/cmake:cmake)/cmake-3.16.0/bin\"
+    sh $SRCDIR/build-ton.sh $OUT $SRCDIR $(location //submodules/openssl:openssl_build_merged)
+""",
     out = "ton",
     visibility = [
         "//submodules/ton:...",
diff --git a/third-party/BUCK b/third-party/BUCK
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/third-party/cmake/BUCK b/third-party/cmake/BUCK
new file mode 100644
index 0000000000..99d7db5a9f
--- /dev/null
+++ b/third-party/cmake/BUCK
@@ -0,0 +1,21 @@
+
+genrule(
+    name = "cmake",
+    srcs = [
+        "cmake-3.16.0.tar.gz",
+    ],
+    bash =
+"""
+    core_count="`sysctl -n hw.logicalcpu`"
+    mkdir -p "$OUT"
+    tar -xzf "$SRCDIR/cmake-3.16.0.tar.gz" --directory "$OUT"
+    pushd "$OUT/cmake-3.16.0"
+    ./bootstrap --parallel=$core_count -- -DCMAKE_BUILD_TYPE:STRING=Release
+    make -j $core_count
+    popd
+""",
+    out = "cmake",
+    visibility = [
+        "PUBLIC",
+    ]
+)
diff --git a/third-party/cmake/cmake-3.16.0.tar.gz b/third-party/cmake/cmake-3.16.0.tar.gz
new file mode 100644
index 0000000000..af3e739dab
Binary files /dev/null and b/third-party/cmake/cmake-3.16.0.tar.gz differ
diff --git a/third-party/yasm/BUCK b/third-party/yasm/BUCK
new file mode 100644
index 0000000000..eade17fbf2
--- /dev/null
+++ b/third-party/yasm/BUCK
@@ -0,0 +1,24 @@
+
+genrule(
+    name = "yasm",
+    srcs = [
+        "yasm-1.3.0.tar.gz",
+    ],
+    bash =
+"""
+    core_count="`sysctl -n hw.logicalcpu`"
+    mkdir -p "$OUT"
+    tar -xzf "$SRCDIR/yasm-1.3.0.tar.gz" --directory "$OUT"
+    pushd "$OUT/yasm-1.3.0"
+    mkdir build
+    cd build
+    export PATH=\"$PATH:$(location //third-party/cmake:cmake)/cmake-3.16.0/bin\"
+    cmake .. -DYASM_BUILD_TESTS=OFF -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF
+    make -j $core_count
+    popd
+""",
+    out = "yasm",
+    visibility = [
+        "PUBLIC",
+    ]
+)
diff --git a/third-party/yasm/yasm-1.3.0.tar.gz b/third-party/yasm/yasm-1.3.0.tar.gz
new file mode 100644
index 0000000000..665692ba80
Binary files /dev/null and b/third-party/yasm/yasm-1.3.0.tar.gz differ