Quick Start

Install dependencies:

pacman -S acl cryptsetup docbook-xsl gperf lz4 xz pam libelf intltool kmod libarchive libcap libidn2 libgcrypt libmicrohttpd libxcrypt libxslt util-linux linux-api-headers python-jinja python-lxml quota-tools shadow git meson libseccomp pcre2 audit kexec-tools libxkbcommon bash-completion p11-kit systemd libfido2 tpm2-tss rsync bpf libbpf clang llvm curl gnutls python-pyelftools libpwquality qrencode python-pefile

Clone and build stub:

git clone https://github.com/anonymix007/systemd-stub
git clone https://github.com/anonymix007/systemd -b multiple-dt
cd systemd
meson setup -Dbootloader=enabled builddir
meson compile -C builddir version.h
cd ../systemd-stub

With GCC:

make EFI_ARCH=aa64 CROSS_COMPILE=aarch64-linux-gnu-

Or with clang:

make EFI_ARCH=aa64 TARGET=aarch64-unknown-windows -f Makefile.llvm

Building with clang requires applying the following patch:

diff --git a/src/fundamental/macro-fundamental.h b/src/fundamental/macro-fundamental.h
index 35758b5b18..469642be22 100644
--- a/src/fundamental/macro-fundamental.h
+++ b/src/fundamental/macro-fundamental.h
@@ -538,14 +538,22 @@ static inline uint64_t ALIGN_OFFSET_U64(uint64_t l, uint64_t ali) {
         }
 #endif

+#if __GNUC__ > 0
 /* Declares an ELF read-only string section that does not occupy memory at runtime. */
-#define DECLARE_NOALLOC_SECTION(name, text)   \
+#define DECLARE_NOALLOC_SECTION_SUFFIX(name, text, ...)   \
         asm(".pushsection " name ",\"S\"\n\t" \
             ".ascii " STRINGIFY(text) "\n\t"  \
             ".popsection\n")
+#else
+#define DECLARE_NOALLOC_SECTION_SUFFIX(name, text, suffix)   \
+    __attribute__((section(name))) __attribute__((__used__)) static const char __static_section_content_##suffix[] = text;
+#endif
+
+#define DECLARE_NOALLOC_SECTION(name, text) \
+    DECLARE_NOALLOC_SECTION_SUFFIX(name, text, unknown)

 #ifdef SBAT_DISTRO
-        #define DECLARE_SBAT(text) DECLARE_NOALLOC_SECTION(".sbat", text)
+        #define DECLARE_SBAT(text) DECLARE_NOALLOC_SECTION_SUFFIX(".sbat", text, sbat)
 #else
         #define DECLARE_SBAT(text)
 #endif

And then build UKI:

python src/ukify/ukify.py build --config x1e.conf -o linux-x1e.efi
# Or on the device itself:
make linux-x1e.efi

Credits

• json/*.json: Autogenerated with hwid2json from dtbloader HWID database.