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wiki1347: Downloads_gcc4.2Preview

GCC 4.2 Preview Build#

Download the latest stable build of the QNX port for GCC 4.2, and experiment with its new features. Please provide your feedback using the Core Development Tools Forum.

What's new?#

GCC 4.2.1 port#

  • New C parser (available in gcc 4.1 and newer). Yacc-based C parser was replaced with a faster hand-written parser.
  • New C++ parser (availble in gcc 3.4 and newer). g++ is now much closer to full conformance to the ISO/ANSI C++ standard.
  • New optimization framework based on SSA. New code transformations include dead store elimination, constant propagation, value range propagation, load and store motion, strength reduction and many more.
  • Optimized ARM floating point emulation routines.
  • Support for precompiled headers (requires updated qcc).

Binutils 2.17 port#

  • Support added for ARM V6.
  • Support added for ARM VFP floating-point instruction set.
  • Support added for SH4a and variants.
  • Support added for SSE3 instructions.

Installation Instructions#

To install the GCC 4.2 preview:

  1. If you haven't done so yet, download and install QNX Momentics 6.3.2. A 90-day evaluation version and perpetual non-commercial licenses are available here.
  2. Download GCC 4.2 from the Project Download area. If you have a Windows host, download If you have a Linux host, download linux-gcc-4.2.1.tar.gz. If you have a Neutrino host, download the nto-gcc-4.2.1.tar.gz.
  3. Download Binutis 2.17 from the Project Download area. If you have a Windows host, download If you have a Linux host, download linux-binutils-2.17.tar.gz. If you have a Neutrino host, download the nto-binutils-2.17.tar.gz.
  4. Once you have the two packages, change directories to your root QNX632 directory. For example, on a Windows host, the default is typically C:\QNX632, however your install may differ. For Linux and Neutrino hosts, the default root QNX directories are usually /opt/qnx632 and /usr/qnx632, respectively.
  5. Uncompress the GCC 4.2 and Binutils 2.17 packages into this directory. If you are on a system that has write permissions to $QNX_HOST and $QNX_TARGET, switch to superuser/administrator access before uncompressing.

After You Install#

After the packages are uncompressed, you will be able to use the GCC 4.2 compiler by invoking the qcc driver and specifying the 4.2.1 version. For example: qcc -V4.2.1,gcc_ntoshle helloworld.c. GCC 4.2.1 will also be listed as an available compiler within the IDE.


This is experimental code being provided for evaluation purposes only, and is under the terms of a valid QNX Momentics development tool license agreement.