diff --git a/sysa/SHA256SUMS.pkgs b/sysa/SHA256SUMS.pkgs
index 264bfff..fea3543 100644
--- a/sysa/SHA256SUMS.pkgs
+++ b/sysa/SHA256SUMS.pkgs
@@ -48,7 +48,7 @@ d7b7453ad400eac1ba39f99971afdc392cb8a92c557ef5d6fd9fa2625124de4a  ed-1.4_0.tar.b
 408131b1c033a5f8a6845997b049784be0b466cec107a71270e5a04dae2c1e6c  flex-2.6.4_0.tar.bz2
 5ff7fbe16b55563719b108260bd6a34ebabab0465d758ca98cba522932532e45  gawk-3.0.4_0.tar.bz2
 6de1c1380026ef9948387e665610185b6014f47a80453177a6c81898c95cbbd3  gc-8.0.4_0.tar.bz2
-4ed230542823160a4b1a469847cc2cc0ae1985611f2e1b831e13f2a3a7122efb  gcc-10.4.0_0.tar.bz2
+cb1aca35878f7c53e7dc96294ceca2ce3c72cf89359fe2bec46336d5f0849387  gcc-10.4.0_0.tar.bz2
 b09580c3972ff4e5f6e624bdc83d5328ce017422e0b92a7c170b51b6f04a47d2  gcc-4.0.4_0.tar.bz2
 58d0d431bb2e96a273965b5e7aa760fb6961a7f7f2fd98ef5fc5a6b7b44bc989  gcc-4.0.4_1.tar.bz2
 a2301d8dbbfbfcdd18444f01848e8e4366780281009640acbd3af0fab9b11aea  gcc-4.7.4_0.tar.bz2
@@ -79,7 +79,7 @@ a724c91a43e282c3d338a977e4eeac3b970df241db7872f9d5cf27984b609814  musl-1.1.24_0.
 b79e0f8a39ba8880d43aa27551b72915655c62af39125e1f4ac8f8e69e71aaca  musl-1.1.24_2.tar.bz2
 a675ead0f146a96973fca9cc9e4f16081b14c26630ae17405e3ba5e9510ff30d  musl-1.2.3_0.tar.bz2
 054c6a5f1c07d124b701e590267aa8fb2ba1c88bed9a69a473724f8534cdb728  musl-1.2.3_1.tar.bz2
-3260f0c8bfa1160a2f252c6e0d3ca5f98635ec8f9d9f211a30ef1a0313cac853  musl-1.2.3_2.tar.bz2
+5ba73e250b0325f690b2c5c3afd4a14cf4612c682e9b358727ebcb7bc6b758ef  musl-1.2.3_2.tar.bz2
 e0c91898e771c65e6a462600243a7858b069db5726680193f86d7dbac3f740ae  openssl-1.1.1l_0.tar.bz2
 69daf6ffbf26fea500426c6936e5a16e82833f03ad0dc6109697f69a8516b4c7  patch-2.7.6_0.tar.bz2
 914a7abf36a64723b6e9f9b0b6ccd19c8e544fa798896a2bb1151dc341890c22  perl-5.000_0.tar.bz2
diff --git a/sysc/gcc-10.4.0/gcc-10.4.0.sh b/sysc/gcc-10.4.0/gcc-10.4.0.sh
index 20f55f3..99db8dd 100755
--- a/sysc/gcc-10.4.0/gcc-10.4.0.sh
+++ b/sysc/gcc-10.4.0/gcc-10.4.0.sh
@@ -95,5 +95,6 @@ src_configure() {
         --disable-sjlj-exceptions \
         --disable-multilib \
         --enable-threads=posix \
-        --disable-libsanitizer
+        --disable-libsanitizer \
+        --disable-libssp
 }
diff --git a/sysc/musl-1.2.3/files/__stack_chk_fail_local.c b/sysc/musl-1.2.3/files/__stack_chk_fail_local.c
new file mode 100644
index 0000000..144d97b
--- /dev/null
+++ b/sysc/musl-1.2.3/files/__stack_chk_fail_local.c
@@ -0,0 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Timo Teräs <timo.teras@iki.fi>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+extern void __stack_chk_fail(void);
+void __attribute__((visibility ("hidden"))) __stack_chk_fail_local(void) { __stack_chk_fail(); }
diff --git a/sysc/musl-1.2.3/musl-1.2.3.sh b/sysc/musl-1.2.3/musl-1.2.3.sh
index b51c8fc..dc1fb64 100755
--- a/sysc/musl-1.2.3/musl-1.2.3.sh
+++ b/sysc/musl-1.2.3/musl-1.2.3.sh
@@ -14,11 +14,19 @@ src_configure() {
 
 src_compile() {
     make "${MAKEJOBS}" CROSS_COMPILE=
+
+    # Provide libssp_nonshared.a to avoid GCC's messy libssp
+    # (Taken from Alpine Linux)
+    gcc -c __stack_chk_fail_local.c -o __stack_chk_fail_local.o
+    ar r libssp_nonshared.a __stack_chk_fail_local.o
 }
 
 src_install() {
     default
 
+    # Install libssp_nonshared.a
+    install -m 644 libssp_nonshared.a "${DESTDIR}${PREFIX}/lib/"
+
     # Make dynamic linker symlink relative in ${PREFIX}/lib
     rm "${DESTDIR}/lib/ld-musl-i386.so.1"
     rmdir "${DESTDIR}/lib"