From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Thu, 6 Apr 2017 17:13:23 +0200 Subject: [Buildroot] [PATCH v4 1/1] syslinux: build with the target toolchain In-Reply-To: <1491473086-16647-1-git-send-email-benoit.allard@greenbone.net> References: <1491398930-6130-1-git-send-email-benoit.allard@greenbone.net> <1491473086-16647-1-git-send-email-benoit.allard@greenbone.net> Message-ID: <20170406171323.13d11cc6@free-electrons.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Hello, On Thu, 6 Apr 2017 12:04:46 +0200, Beno?t Allard wrote: > Until now, the host toolchain was used to build syslinux, as it was > not possible to build a 32-bit syslinux with a x86-64 toolchain. > > However, syslinux requires gnu-efi, and gnu-efi is built using the > target toolchain. Mixing different toolchains doesn't work well, so > this commit changes the syslinux package to use the target toolchain > for syslinux as well. This is made possible by patches > 0003-Fix-ldlinux.elf-Not-enough-room-for-program-headers-.patch and > 0004-memdisk-Force-ld-output-format-to-32-bits.patch. > > Since syslinux also contains some utilities that have to run on the > host, those have to continue being built with the host toolchain, > which requires patch 0005-utils-Use-the-host-toolchain-to-build.patch. > > This was tested using a Buildroot's built x86_64 toolchain, and > checked that the output binaries are 32-bits. It was tested as well if > they actually boot on hardware. > > Signed-off-by: Beno?t Allard Thanks, this now builds fine. However, in output/host/usr/bin, I still have a program built with the target toolchain: $ file output/host/usr/bin/syslinux output/host/usr/bin/syslinux: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-musl-x86_64.so.1, not stripped See the /lib/ld-musl-x86_64 interpreter? This means it has been built against the musl C library, and therefore with the target toolchain. What is this program useful for? Best regards, Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com