Support building images on other architectures

This unconditionally cross compiles all iPXE images. This has the effect
that the build will always produce the correct output for a defined
architecture regardless of host architecture.

syslinux is x86 architecture dependent. It doesn't seem to be used in
the build process, so the packages are removed from the list of required
packages.

Signed-off-by: Felix Kaechele <felix@kaechele.ca>

roles/netbootxyz/tasks/generate_disks_efi.yml

@@ -27,7 +27,9 @@
 - name: Compile iPXE bootloader for EFI
   ansible.builtin.shell: |
     make clean
-    make EMBED={{ bootloader_filename }} \
+    make CROSS_COMPILE=x86_64-linux-gnu- \
+         ARCH=x86_64 \
+         EMBED={{ bootloader_filename }} \
          TRUST={{ trust_files }} \
          bin-x86_64-efi/ipxe.efi \
          bin-x86_64-efi/snp.efi \
@@ -39,7 +41,9 @@
 - name: Compile iPXE bootloader for EFI with debug flags
   ansible.builtin.shell: |
     make clean
-    make EMBED={{ bootloader_filename }} \
+    make CROSS_COMPILE=x86_64-linux-gnu- \
+         ARCH=x86_64 \
+         EMBED={{ bootloader_filename }} \
          DEBUG={{ ipxe_debug_options }} \
          TRUST={{ trust_files }} \
          bin-x86_64-efi/ipxe.efi \

roles/netbootxyz/tasks/generate_disks_legacy.yml

@@ -23,7 +23,9 @@
 - name: Compile iPXE bootloader for Legacy BIOS
   ansible.builtin.shell: |
     make clean
-    make EMBED={{ bootloader_filename }} \
+    make CROSS_COMPILE=x86_64-linux-gnu- \
+         ARCH=x86_64 \
+         EMBED={{ bootloader_filename }} \
          TRUST={{ trust_files }} \
          bin/ipxe.dsk \
          bin/ipxe.pdsk \
@@ -37,7 +39,9 @@
 - name: Compile iPXE bootloader for Legacy BIOS with debug flags
   ansible.builtin.shell: |
     make clean
-    make EMBED={{ bootloader_filename }} \
+    make CROSS_COMPILE=x86_64-linux-gnu- \
+         ARCH=x86_64 \
+         EMBED={{ bootloader_filename }} \
          DEBUG={{ ipxe_debug_options }} \
          TRUST={{ trust_files }} \
          bin/ipxe.dsk \

roles/netbootxyz/tasks/generate_disks_linux.yml

@@ -27,7 +27,9 @@
 - name: Compile iPXE Linux bootloader for Legacy BIOS
   ansible.builtin.shell: |
     make clean
-    make EMBED={{ bootloader_filename }} \
+    make CROSS_COMPILE=x86_64-linux-gnu- \
+         ARCH=x86_64 \
+         EMBED={{ bootloader_filename }} \
          TRUST={{ trust_files }} \
          bin-x86_64-linux/slirp.linux
   args:
@@ -37,7 +39,9 @@
 - name: Compile iPXE Linux bootloader for Legacy BIOS with debug flags
   ansible.builtin.shell: |
     make clean
-    make EMBED={{ bootloader_filename }} \
+    make CROSS_COMPILE=x86_64-linux-gnu- \
+         ARCH=x86_64 \
+         EMBED={{ bootloader_filename }} \
          DEBUG={{ ipxe_debug_options }} \
          TRUST={{ trust_files }} \
          bin-x86_64-linux/slirp.linux

roles/netbootxyz/vars/debian.yml

@@ -3,15 +3,15 @@ netbootxyz_packages:
   - apache2
   - binutils-dev
   - binutils-aarch64-linux-gnu
+  - binutils-x86-64-linux-gnu
   - dosfstools
   - figlet
   - gcc-aarch64-linux-gnu
+  - gcc-x86-64-linux-gnu
   - build-essential
   - genisoimage
   - git
   - isolinux
   - liblzma-dev
   - libslirp-dev
-  - syslinux
-  - syslinux-common
   - toilet

roles/netbootxyz/vars/redhat.yml

@@ -8,6 +8,5 @@ netbootxyz_packages:
   - httpd
   - libslirp-devel
   - minizip-devel
-  - syslinux
   - xz-devel
   - make

roles/netbootxyz/vars/ubuntu.yml

@@ -3,17 +3,17 @@ netbootxyz_packages:
   - apache2
   - binutils-dev
   - binutils-aarch64-linux-gnu
+  - binutils-x86-64-linux-gnu
   - dosfstools
   - figlet
   - gcc-aarch64-linux-gnu
+  - gcc-x86-64-linux-gnu
   - build-essential
   - genisoimage
   - git
   - isolinux
   - liblzma-dev
   - libslirp-dev
-  - syslinux
-  - syslinux-common
   - toilet
 
 pipxe_packages: