dinominant
Tux's lil' helper
Joined: 27 Oct 2006
Posts: 102
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 Posted: Fri Aug 14, 2015 7:57 pm Post subject: Raspberry Pi and Raspberry Pi 2 CFLAGS |
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I've been maintaining a stage4 install for both the Raspberry Pi and the Raspberry Pi 2 and it was a bit of a task to find good CFLAGS and use flags. The Raspberry Pi 2 supports neon which is the only notable difference in my use flags below.
These are the CFLAGS and other settings I use on my older Raspberry Pi in /etc/portage/make.conf
| Code: | CFLAGS="-O2 -pipe -march=armv6j -mtune=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard"
CHOST="armv6j-hardfloat-linux-gnueabi"
# hardware
USE="$USE acpi apm bluetooth cpudetection hddtemp ieee1394 lm_sensors smp usb wifi"
# server
USE="$USE acl crypt cups icu idn imap ipv6 kvm largefile ldap lzma lzo mmap multilib network posix samba sharedmem sockets ssl syslog threads udev unicode vnc xattr" |
And these are the CFLAGS I use on my newer Raspberry Pi 2 in /etc/portage/make.conf
| Code: | CFLAGS="-O2 -pipe -march=armv7-a -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard"
CHOST="armv7a-hardfloat-linux-gnueabi"
# hardware
USE="$USE acpi apm bluetooth cpudetection hddtemp ieee1394 lm_sensors neon smp usb wifi"
# server
USE="$USE acl crypt cups icu idn imap ipv6 kvm largefile ldap lzma lzo mmap multilib network posix samba sharedmem sockets ssl syslog threads udev unicode vnc xattr" |
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Gentoo on ARM
