Release notes for*************************************************GNU Tools for Arm Embedded Processors 7 - Q2 2018*************************************************This release includes the following items:* Bare metal EABI pre-built binaries for running on a Windows host* Bare metal EABI pre-built binaries for running on a Linux host* Bare metal EABI pre-built binaries for running on a Mac OS X host* Source code package (together with build scripts and instructions to setup build environment), composed of: * gcc : ARM/embedded-7-branch revision 261907 svn://gcc.gnu.org/svn/gcc/branches/ARM/embedded-7-branch/ * binutils : 2.30 mainline git://sourceware.org/git/binutils-gdb.git commit 763e359efaba5cc088604e3f3e1dda40fda06831 * newlib and newlib-nano : git://sourceware.org/git/newlib-cygwin.git commit 3ccfb407af410ba7e54ea0da11ae1e40b554a6f4 * gdb : 8.1 mainline git://sourceware.org/git/binutils-gdb.git commit b8839e82459280eb05d7841c0acd67b46f2cbf49Note that some or all of the following prerequisites are downloaded whenbuilding from source: * EnvVarUpdate NSIS script : * expat 2.1.1 : -2.1.1.tar.bz2 * gmp 6.1.0 : -6.1.0.tar.bz2 * isl 0.15 : -0.15.tar.bz2 * libelf 0.8.13 : -0.8.13.tar.gz * libiconv 1.14 : -1.14.tar.gz * mpc 1.0.3 : -1.0.3.tar.gz * mpfr 3.1.4 : -3.1.4.tar.bz2 * python 2.7.13 : -2.7.13.msi * zlib 1.2.8 -1.2.8.tar.gz/downloadMinimum host requirements:* Windows 7 32/64 bits or later (with installer and alternative zip package)* Linux - Ubuntu 14.04 64 bits or later (tarball) - Ubuntu supported releases 32 bits and 64 bits (PPA) -end-of-life - RHEL 7 64 bits (tarball)* Mac OS X 10.7.3 and newer 64 bits (tarball)Supported target OS:* Bare metal EABI onlyFeatures:* All GCC 7 features, plus latest mainline features: + Armv8-R and Arm Cortex-R52 supportTests:* Targets + variety of Cortex-M0/M0+/M3/M4/M7/A9 boards + Qemu + Arm Fast Models* Hosts + Windows 7 32/64 bits (with installer and alternative zip package) + Linux 64 bits - Ubuntu 14.04 and 16.04 (tarball and PPA) - RHEL 7 (tarball) + Mac OS X 10.7.3 (tarball)Important changes in 7-2017Q4 major release:* Armv8-R and Arm Cortex-R52 support* Fix for _bug.cgi?id=69866* GDB built with C++ enabled for Mac OS X* Fixed LTO bug -arm-embedded/+bug/1747966Important changes in 7-2018Q2 update release:* Fixed powf/expf/exp2f/logf/log2f performance regression -arm-embedded/+question/662462* Added support for Arm Cortex-M33 without DSP via -mcpu=cortex-m33+nodsp* Added Armv8-R multilib mappings* Fix build requirements for GDB tui support* Enabled C99 IO format specifier in newlib* Fixed cmse_nonsecure_caller Armv8-M Security Extension intrinsic _bug.cgi?id=85203* Fix crash in __builtin_arm_set_fpscr GCC builtin _bug.cgi?id=85261* LTO bug -arm-embedded/+bug/1747966 was fixed in previous release. Release note updated to reflect the change.* Fixed issue with building libgcc's cmse.c without headers -arm-embedded/+bug/1717502* Fixed issue with arm_cmse.h C99 compatibility -arm-embedded/+bug/1773934Known Changes and Issues:* Thumb1 code size regression due to new register allocation: _bug.cgi?id=59535* Multilib is now enabled with --with-multilib-list=rmprofile when building the toolchain from source* Windows installer now accepts the following options when running in silent mode: - /P Adds the installation bin directory to the system PATH - /R Adds an InstallFolder registry entry for the install.
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