diff --git a/cross-aarch64-gcc13-bootstrap.spec b/cross-aarch64-gcc13-bootstrap.spec
index 4e3dd32..9dad799 100644
--- a/cross-aarch64-gcc13-bootstrap.spec
+++ b/cross-aarch64-gcc13-bootstrap.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-aarch64-gcc13.spec b/cross-aarch64-gcc13.spec
index 3178457..435ca0f 100644
--- a/cross-aarch64-gcc13.spec
+++ b/cross-aarch64-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-amdgcn-gcc13.spec b/cross-amdgcn-gcc13.spec
index 093954a..8117d2e 100644
--- a/cross-amdgcn-gcc13.spec
+++ b/cross-amdgcn-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-arm-gcc13.spec b/cross-arm-gcc13.spec
index 1a696d5..167b553 100644
--- a/cross-arm-gcc13.spec
+++ b/cross-arm-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-arm-none-gcc13-bootstrap.spec b/cross-arm-none-gcc13-bootstrap.spec
index ffd0b4e..d147da7 100644
--- a/cross-arm-none-gcc13-bootstrap.spec
+++ b/cross-arm-none-gcc13-bootstrap.spec
@@ -342,6 +342,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-arm-none-gcc13.spec b/cross-arm-none-gcc13.spec
index 0462f0a..0f9ae6d 100644
--- a/cross-arm-none-gcc13.spec
+++ b/cross-arm-none-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-avr-gcc13-bootstrap.spec b/cross-avr-gcc13-bootstrap.spec
index 5ef2482..8e68a55 100644
--- a/cross-avr-gcc13-bootstrap.spec
+++ b/cross-avr-gcc13-bootstrap.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-avr-gcc13.spec b/cross-avr-gcc13.spec
index 2285e1e..9a347e9 100644
--- a/cross-avr-gcc13.spec
+++ b/cross-avr-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-bpf-gcc13.spec b/cross-bpf-gcc13.spec
index cb05ab7..81ba1bc 100644
--- a/cross-bpf-gcc13.spec
+++ b/cross-bpf-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-epiphany-gcc13-bootstrap.spec b/cross-epiphany-gcc13-bootstrap.spec
index 7a1d450..1feb0de 100644
--- a/cross-epiphany-gcc13-bootstrap.spec
+++ b/cross-epiphany-gcc13-bootstrap.spec
@@ -342,6 +342,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-epiphany-gcc13.spec b/cross-epiphany-gcc13.spec
index 8bdc898..c61bc4b 100644
--- a/cross-epiphany-gcc13.spec
+++ b/cross-epiphany-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-hppa-gcc13-bootstrap.spec b/cross-hppa-gcc13-bootstrap.spec
index 3fdd87a..46017e8 100644
--- a/cross-hppa-gcc13-bootstrap.spec
+++ b/cross-hppa-gcc13-bootstrap.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-hppa-gcc13.spec b/cross-hppa-gcc13.spec
index e40ad43..7208ef4 100644
--- a/cross-hppa-gcc13.spec
+++ b/cross-hppa-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-m68k-gcc13.spec b/cross-m68k-gcc13.spec
index 1057ca6..b2fb893 100644
--- a/cross-m68k-gcc13.spec
+++ b/cross-m68k-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-mips-gcc13.spec b/cross-mips-gcc13.spec
index 74da4f8..fda9173 100644
--- a/cross-mips-gcc13.spec
+++ b/cross-mips-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-nvptx-gcc13.spec b/cross-nvptx-gcc13.spec
index 5120e12..050deb5 100644
--- a/cross-nvptx-gcc13.spec
+++ b/cross-nvptx-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-ppc64-gcc13.spec b/cross-ppc64-gcc13.spec
index ab38835..c577a00 100644
--- a/cross-ppc64-gcc13.spec
+++ b/cross-ppc64-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-ppc64le-gcc13.spec b/cross-ppc64le-gcc13.spec
index f957af9..6cd9979 100644
--- a/cross-ppc64le-gcc13.spec
+++ b/cross-ppc64le-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-pru-gcc13-bootstrap.spec b/cross-pru-gcc13-bootstrap.spec
index 1139177..bb2691c 100644
--- a/cross-pru-gcc13-bootstrap.spec
+++ b/cross-pru-gcc13-bootstrap.spec
@@ -342,6 +342,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-pru-gcc13.spec b/cross-pru-gcc13.spec
index 14f794b..dbde193 100644
--- a/cross-pru-gcc13.spec
+++ b/cross-pru-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-riscv64-elf-gcc13-bootstrap.spec b/cross-riscv64-elf-gcc13-bootstrap.spec
index 76068f9..4e8933e 100644
--- a/cross-riscv64-elf-gcc13-bootstrap.spec
+++ b/cross-riscv64-elf-gcc13-bootstrap.spec
@@ -342,6 +342,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-riscv64-elf-gcc13.spec b/cross-riscv64-elf-gcc13.spec
index 7fba437..23f8213 100644
--- a/cross-riscv64-elf-gcc13.spec
+++ b/cross-riscv64-elf-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-riscv64-gcc13-bootstrap.spec b/cross-riscv64-gcc13-bootstrap.spec
index f62a2d3..16a483c 100644
--- a/cross-riscv64-gcc13-bootstrap.spec
+++ b/cross-riscv64-gcc13-bootstrap.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-riscv64-gcc13.spec b/cross-riscv64-gcc13.spec
index fd4bbc3..0c564bb 100644
--- a/cross-riscv64-gcc13.spec
+++ b/cross-riscv64-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-rx-gcc13-bootstrap.spec b/cross-rx-gcc13-bootstrap.spec
index 110e6d8..8411668 100644
--- a/cross-rx-gcc13-bootstrap.spec
+++ b/cross-rx-gcc13-bootstrap.spec
@@ -342,6 +342,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-rx-gcc13.spec b/cross-rx-gcc13.spec
index 29144a9..02ea402 100644
--- a/cross-rx-gcc13.spec
+++ b/cross-rx-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-s390x-gcc13.spec b/cross-s390x-gcc13.spec
index 938a67f..9343d13 100644
--- a/cross-s390x-gcc13.spec
+++ b/cross-s390x-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-sparc-gcc13.spec b/cross-sparc-gcc13.spec
index 77604b8..6952706 100644
--- a/cross-sparc-gcc13.spec
+++ b/cross-sparc-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-sparc64-gcc13.spec b/cross-sparc64-gcc13.spec
index c7d5b9c..92c97ef 100644
--- a/cross-sparc64-gcc13.spec
+++ b/cross-sparc64-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/cross-x86_64-gcc13.spec b/cross-x86_64-gcc13.spec
index 48e1e9c..3542c74 100644
--- a/cross-x86_64-gcc13.spec
+++ b/cross-x86_64-gcc13.spec
@@ -341,6 +341,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/gcc.spec.in b/gcc.spec.in
index 950f6ec..3a46566 100644
--- a/gcc.spec.in
+++ b/gcc.spec.in
@@ -17,6 +17,8 @@
 
 # nospeccleaner
 
+%global flavor @BUILD_FLAVOR@%{nil}
+
 %if 0%{?suse_version} < 1550
 %define _slibdir  /%{_lib}
 %define slibdir   /lib
@@ -127,6 +129,13 @@
 %define build_jit 0
 %endif
 
+# Limit the number of parallel jobs to avoid OOM for gcc13
+%if "%{flavor}" == ""
+%bcond_without limitbuild
+%else
+%bcond_with limitbuild
+%endif
+
 # Shared library SONAME versions
 %ifarch hppa
 %define libgcc_s 4
@@ -229,6 +238,9 @@ BuildRequires: texinfo
 # until here, but at least renaming and patching info files breaks this
 BuildRequires: gcc-c++
 BuildRequires: glibc-devel-32bit
+%if %{with limitbuild}
+BuildRequires:  memory-constraints
+%endif
 BuildRequires: mpc-devel
 BuildRequires: mpfr-devel
 BuildRequires: perl
@@ -1353,6 +1365,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/gcc13-testresults.spec b/gcc13-testresults.spec
index b3953a2..9cba812 100644
--- a/gcc13-testresults.spec
+++ b/gcc13-testresults.spec
@@ -37,6 +37,8 @@
 
 # nospeccleaner
 
+%global flavor @BUILD_FLAVOR@%{nil}
+
 %if 0%{?suse_version} < 1550
 %define _slibdir  /%{_lib}
 %define slibdir   /lib
@@ -147,6 +149,13 @@
 %define build_jit 0
 %endif
 
+# Limit the number of parallel jobs to avoid OOM for gcc13
+%if "%{flavor}" == ""
+%bcond_without limitbuild
+%else
+%bcond_with limitbuild
+%endif
+
 # Shared library SONAME versions
 %ifarch hppa
 %define libgcc_s 4
@@ -245,6 +254,9 @@ BuildRequires:  texinfo
 # until here, but at least renaming and patching info files breaks this
 BuildRequires:  gcc-c++
 BuildRequires:  glibc-devel-32bit
+%if %{with limitbuild}
+BuildRequires:  memory-constraints
+%endif
 BuildRequires:  mpc-devel
 BuildRequires:  mpfr-devel
 BuildRequires:  perl
@@ -544,6 +556,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch
diff --git a/gcc13.changes b/gcc13.changes
index 8a909ae..56fe25c 100644
--- a/gcc13.changes
+++ b/gcc13.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Mar 24 14:44:48 UTC 2023 - Guillaume GARDET <guillaume.gardet@opensuse.org>
+
+- Add %limit_build for gcc13 to avoid OOM
+
 -------------------------------------------------------------------
 Fri Mar 24 13:37:38 UTC 2023 - Martin Liška <mliska@suse.cz>
 
diff --git a/gcc13.spec b/gcc13.spec
index bbfd3cf..484ffcc 100644
--- a/gcc13.spec
+++ b/gcc13.spec
@@ -16,6 +16,8 @@
 #
 
 
+%global flavor @BUILD_FLAVOR@%{nil}
+
 %if 0%{?suse_version} < 1550
 %define _slibdir  /%{_lib}
 %define slibdir   /lib
@@ -126,6 +128,13 @@
 %define build_jit 0
 %endif
 
+# Limit the number of parallel jobs to avoid OOM for gcc13
+%if "%{flavor}" == ""
+%bcond_without limitbuild
+%else
+%bcond_with limitbuild
+%endif
+
 # Shared library SONAME versions
 %ifarch hppa
 %define libgcc_s 4
@@ -224,6 +233,9 @@ BuildRequires:  texinfo
 # until here, but at least renaming and patching info files breaks this
 BuildRequires:  gcc-c++
 BuildRequires:  glibc-devel-32bit
+%if %{with limitbuild}
+BuildRequires:  memory-constraints
+%endif
 BuildRequires:  mpc-devel
 BuildRequires:  mpfr-devel
 BuildRequires:  perl
@@ -2361,6 +2373,9 @@ ln -s newlib-4.3.0.20230120/newlib .
 #test patching end
 
 %build
+%if %{with limitbuild}
+%limit_build -m 900
+%endif
 %define _lto_cflags %{nil}
 # Avoid rebuilding of generated files
 contrib/gcc_update --touch