diff --git a/pkgs/os-specific/linux/minimal-bootstrap/binutils/default.nix b/pkgs/os-specific/linux/minimal-bootstrap/binutils/default.nix
index 4ba20f13192e..eb34c121e9da 100644
--- a/pkgs/os-specific/linux/minimal-bootstrap/binutils/default.nix
+++ b/pkgs/os-specific/linux/minimal-bootstrap/binutils/default.nix
@@ -54,6 +54,8 @@ let
     # libbfd and libopcodes into a default visibility. Drop default lib
     # path to force users to declare their use of these libraries.
     "--with-lib-path=:"
+    "--disable-gold"
+    "--disable-plugins"
   ];
 in
 bash.runCommand "${pname}-${version}"
diff --git a/pkgs/os-specific/linux/minimal-bootstrap/binutils/static.nix b/pkgs/os-specific/linux/minimal-bootstrap/binutils/static.nix
index fd0681ca4d41..90e2eb8126ea 100644
--- a/pkgs/os-specific/linux/minimal-bootstrap/binutils/static.nix
+++ b/pkgs/os-specific/linux/minimal-bootstrap/binutils/static.nix
@@ -56,6 +56,8 @@ let
     # libbfd and libopcodes into a default visibility. Drop default lib
     # path to force users to declare their use of these libraries.
     "--with-lib-path=:"
+    "--disable-gold"
+    "--disable-plugins"
   ];
 in
 bash.runCommand "${pname}-${version}"
diff --git a/pkgs/os-specific/linux/minimal-bootstrap/gcc/10.nix b/pkgs/os-specific/linux/minimal-bootstrap/gcc/10.nix
index 090b939acd7f..25b06eb13f00 100644
--- a/pkgs/os-specific/linux/minimal-bootstrap/gcc/10.nix
+++ b/pkgs/os-specific/linux/minimal-bootstrap/gcc/10.nix
@@ -48,12 +48,6 @@ let
     url = "mirror://gnu/mpc/mpc-${mpcVersion}.tar.gz";
     hash = "sha256-q2QkkvXPiCt0qgy3MM1BCoHtzb7IlRg86TDnBsHHWbg=";
   };
-
-  islVersion = "0.24";
-  isl = fetchurl {
-    url = "https://gcc.gnu.org/pub/gcc/infrastructure/isl-${islVersion}.tar.bz2";
-    hash = "sha256-/PeN2WVsEOuM+fvV9ZoLawE4YgX+GTSzsoegoYmBRcA=";
-  };
 in
 bash.runCommand "${pname}-${version}"
   {
@@ -112,13 +106,11 @@ bash.runCommand "${pname}-${version}"
     tar xf ${gmp}
     tar xf ${mpfr}
     tar xf ${mpc}
-    tar xf ${isl}
     cd gcc-${version}
 
     ln -s ../gmp-${gmpVersion} gmp
     ln -s ../mpfr-${mpfrVersion} mpfr
     ln -s ../mpc-${mpcVersion} mpc
-    ln -s ../isl-${islVersion} isl
 
     # Patch
     # doesn't recognise musl
@@ -127,7 +119,10 @@ bash.runCommand "${pname}-${version}"
     # Configure
     export CC="gcc -Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
     export CXX="g++ -Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
-    export CFLAGS_FOR_TARGET="-Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
+    export CFLAGS="-O1"
+    export CXXFLAGS="-O1"
+    export CFLAGS_FOR_TARGET="-O0 -Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
+    export CXXFLAGS_FOR_TARGET="$CFLAGS_FOR_TARGET"
     export C_INCLUDE_PATH="${musl}/include"
     export CPLUS_INCLUDE_PATH="$C_INCLUDE_PATH"
     export LIBRARY_PATH="${musl}/lib"
@@ -154,7 +149,10 @@ bash.runCommand "${pname}-${version}"
       --disable-lto \
       --disable-multilib \
       --disable-nls \
-      --disable-plugin
+      --disable-plugin \
+      --without-isl \
+      --disable-libstdcxx-filesystem-ts \
+      --disable-shared
 
     # Build
     make -j $NIX_BUILD_CORES
diff --git a/pkgs/os-specific/linux/minimal-bootstrap/gcc/4.6.cxx.nix b/pkgs/os-specific/linux/minimal-bootstrap/gcc/4.6.cxx.nix
index 0f442367f72f..3016e751e72f 100644
--- a/pkgs/os-specific/linux/minimal-bootstrap/gcc/4.6.cxx.nix
+++ b/pkgs/os-specific/linux/minimal-bootstrap/gcc/4.6.cxx.nix
@@ -130,7 +130,10 @@ bash.runCommand "${pname}-${version}"
 
     # Configure
     export CC="gcc -Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
-    export CFLAGS_FOR_TARGET="-Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
+    export CFLAGS="-O1"
+    export CXXFLAGS="-O1"
+    export CFLAGS_FOR_TARGET="-O0 -Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
+    export CXXFLAGS_FOR_TARGET="$CFLAGS_FOR_TARGET"
     export C_INCLUDE_PATH="${musl}/include"
     export CPLUS_INCLUDE_PATH="$C_INCLUDE_PATH"
     export LIBRARY_PATH="${musl}/lib"
@@ -152,7 +155,9 @@ bash.runCommand "${pname}-${version}"
       --disable-libstdcxx-pch \
       --disable-lto \
       --disable-multilib \
-      --disable-nls
+      --disable-nls \
+      --disable-libsanitizer \
+      --disable-shared
 
     # Build
     make -j $NIX_BUILD_CORES
diff --git a/pkgs/os-specific/linux/minimal-bootstrap/gcc/4.6.nix b/pkgs/os-specific/linux/minimal-bootstrap/gcc/4.6.nix
index d9c37f5a0562..7c533e2d0d5b 100644
--- a/pkgs/os-specific/linux/minimal-bootstrap/gcc/4.6.nix
+++ b/pkgs/os-specific/linux/minimal-bootstrap/gcc/4.6.nix
@@ -110,6 +110,7 @@ bash.runCommand "${pname}-${version}"
 
     # Configure
     export CC="tcc -B ${tinycc.libs}/lib"
+    export CFLAGS="-O2"
     export C_INCLUDE_PATH="${tinycc.libs}/include:$(pwd)/mpfr/src"
     export CPLUS_INCLUDE_PATH="$C_INCLUDE_PATH"
 
diff --git a/pkgs/os-specific/linux/minimal-bootstrap/gcc/glibc.nix b/pkgs/os-specific/linux/minimal-bootstrap/gcc/glibc.nix
index 890098aa66b9..3188453cea74 100644
--- a/pkgs/os-specific/linux/minimal-bootstrap/gcc/glibc.nix
+++ b/pkgs/os-specific/linux/minimal-bootstrap/gcc/glibc.nix
@@ -52,12 +52,6 @@ let
     url = "mirror://gnu/mpc/mpc-${mpcVersion}.tar.gz";
     hash = "sha256-q2QkkvXPiCt0qgy3MM1BCoHtzb7IlRg86TDnBsHHWbg=";
   };
-
-  islVersion = "0.24";
-  isl = fetchurl {
-    url = "https://gcc.gnu.org/pub/gcc/infrastructure/isl-${islVersion}.tar.bz2";
-    hash = "sha256-/PeN2WVsEOuM+fvV9ZoLawE4YgX+GTSzsoegoYmBRcA=";
-  };
 in
 bash.runCommand "${pname}-${version}"
   {
@@ -115,17 +109,19 @@ bash.runCommand "${pname}-${version}"
     tar xf ${gmp}
     tar xf ${mpfr}
     tar xf ${mpc}
-    tar xf ${isl}
     cd gcc-${version}
 
     ln -s ../gmp-${gmpVersion} gmp
     ln -s ../mpfr-${mpfrVersion} mpfr
     ln -s ../mpc-${mpcVersion} mpc
-    ln -s ../isl-${islVersion} isl
 
     # Configure
     export CC="gcc -Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
     export CXX="g++ -Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
+    export CFLAGS="-O1 -pipe"
+    export CXXFLAGS="-O1 -pipe"
+    export CFLAGS_FOR_TARGET="-O0"
+    export CXXFLAGS_FOR_TARGET="-O0"
 
     bash ./configure \
       --prefix=$out \
@@ -148,7 +144,10 @@ bash.runCommand "${pname}-${version}"
       --disable-multilib \
       --disable-nls \
       --disable-plugin \
-      --with-specs="%x{-dynamic-linker=${glibc}/lib/${linkerName}} %x{-L${glibc}/lib/} -B${glibc}/lib"
+      --with-specs="%x{-dynamic-linker=${glibc}/lib/${linkerName}} %x{-L${glibc}/lib/} -B${glibc}/lib" \
+      --without-isl \
+      --disable-libstdcxx-backtrace \
+      --disable-libstdcxx-filesystem-ts
 
     # Build
     make -j $NIX_BUILD_CORES
diff --git a/pkgs/os-specific/linux/minimal-bootstrap/gcc/latest.nix b/pkgs/os-specific/linux/minimal-bootstrap/gcc/latest.nix
index e55acf5caecd..d003f164abad 100644
--- a/pkgs/os-specific/linux/minimal-bootstrap/gcc/latest.nix
+++ b/pkgs/os-specific/linux/minimal-bootstrap/gcc/latest.nix
@@ -45,12 +45,6 @@ let
     url = "mirror://gnu/mpc/mpc-${mpcVersion}.tar.gz";
     hash = "sha256-q2QkkvXPiCt0qgy3MM1BCoHtzb7IlRg86TDnBsHHWbg=";
   };
-
-  islVersion = "0.24";
-  isl = fetchurl {
-    url = "https://gcc.gnu.org/pub/gcc/infrastructure/isl-${islVersion}.tar.bz2";
-    hash = "sha256-/PeN2WVsEOuM+fvV9ZoLawE4YgX+GTSzsoegoYmBRcA=";
-  };
 in
 bash.runCommand "${pname}-${version}"
   {
@@ -109,13 +103,11 @@ bash.runCommand "${pname}-${version}"
     tar xf ${gmp}
     tar xf ${mpfr}
     tar xf ${mpc}
-    tar xf ${isl}
     cd gcc-${version}
 
     ln -s ../gmp-${gmpVersion} gmp
     ln -s ../mpfr-${mpfrVersion} mpfr
     ln -s ../mpc-${mpcVersion} mpc
-    ln -s ../isl-${islVersion} isl
 
     # Patch
     # force musl even if host triple is gnu
@@ -124,7 +116,10 @@ bash.runCommand "${pname}-${version}"
     # Configure
     export CC="gcc -Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
     export CXX="g++ -Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
-    export CFLAGS_FOR_TARGET="-Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
+    export CFLAGS="-O1"
+    export CXXFLAGS="-O1"
+    export CFLAGS_FOR_TARGET="-O0 -Wl,-dynamic-linker -Wl,${musl}/lib/libc.so"
+    export CXXFLAGS_FOR_TARGET="$CFLAGS_FOR_TARGET"
     export LIBRARY_PATH="${musl}/lib"
 
     bash ./configure \
@@ -148,7 +143,9 @@ bash.runCommand "${pname}-${version}"
       --disable-lto \
       --disable-multilib \
       --disable-nls \
-      --disable-plugin
+      --disable-plugin \
+      --without-isl \
+      --disable-shared
 
     # Build
     make -j $NIX_BUILD_CORES
diff --git a/pkgs/os-specific/linux/minimal-bootstrap/glibc/default.nix b/pkgs/os-specific/linux/minimal-bootstrap/glibc/default.nix
index a9694d349f5e..f156f862ecc0 100644
--- a/pkgs/os-specific/linux/minimal-bootstrap/glibc/default.nix
+++ b/pkgs/os-specific/linux/minimal-bootstrap/glibc/default.nix
@@ -98,12 +98,18 @@ bash.runCommand "${pname}-${version}"
     cd build
     # libstdc++.so is built against musl and fails to link
     export CXX=false
+    export CFLAGS="-O1"
     bash ../configure \
       --prefix=$out \
       --build=${buildPlatform.config} \
       --host=${hostPlatform.config} \
       --with-headers=${linux-headers}/include \
-      --disable-dependency-tracking
+      --disable-dependency-tracking \
+      --disable-nscd \
+      --disable-build-nscd \
+      --disable-profile \
+      --disable-timezone-tools \
+      --disable-mathvec
 
     # Build
     make -j $NIX_BUILD_CORES