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| It was tested with the default `gcc` compiler installed with Debian Buster, gcc (Debian 8.3.0-6) 8.3.0 and successfully builds versions 11.2.0, 10.3.0, 9.4.0, 8.5.0, 7.5.0, 6.5.0 of gcc. | It was tested with the default `gcc` compiler installed with Debian Buster, `gcc (Debian 8.3.0-6) 8.3.0` and successfully builds versions 11.2.0, 10.3.0, 9.4.0, 8.5.0, 7.5.0, 6.5.0 of gcc. |
Build a specific version of gcc
The script below facilitates building your own version of gcc in a location of your choosing.
It was tested with the default gcc compiler installed with Debian Buster, gcc (Debian 8.3.0-6) 8.3.0 and successfully builds versions 11.2.0, 10.3.0, 9.4.0, 8.5.0, 7.5.0, 6.5.0 of gcc.
build_gcc.sh
#!/bin/bash
# Install a specific gcc version in user space
PROD='gcc'
# Show usage of this script
function usage
{
echo "Usage: ${BASH_SOURCE[0]} [--gcc-version=<version>] [--prefix=<directory>] [--build-dir=<directory>]"
echo ' --gcc-version=<version> Supply the gcc version to build'
echo ' --prefix=<directory> The installation directory'
echo ' --build-dir=<directory> The build directory'
echo ' --help Display this usage information'
echo
echo 'For every unset option a default is used'
echo 'All options (set or defaults) are shown at build start.'
echo
echo 'This script was tested with the following versions of gcc:'
echo '11.2.0, 10.3.0, 9.4.0, 8.5.0, 7.5.0, 6.5.0'
}
# Returns true, if version of $1 is greater than $2
function version_gt ()
{
test "$(printf '%s\n' "$@" | \
sort -V | \
head -n 1)" != "${1}"
}
# Iterate over options and set them
shopt -s extglob
while (( $# )); do
case "${1}" in
--gcc-version=*)
VERSION="${1##*=}"
shift
;;
--prefix=*)
PREFIX="${1##*=}"
shift
;;
--build-dir=*)
BUILDDIR="${1##*=}"
shift
;;
--help)
usage
shift
;;
*)
echo "Unknown argument '${1}' ignored"
echo
usage
shift
exit 1
;;
esac
done
# Set default if no option was given
if [[ -z ${VERSION} ]]; then
VERSION="7.5.0"
fi
if [[ ${VERSION} =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
# The option matches a version string
WORKDIR="/scratch/${USER}/${PROD}-${VERSION}"
# Set defaults if no options were given
if [[ -z ${PREFIX} ]]; then
PREFIX="${WORKDIR}/install"
fi
if [[ -z ${BUILDDIR} ]]; then
BUILDDIR="${WORKDIR}/build"
fi
# Summarize options
echo 'Using options:'
echo "- gcc version: ${VERSION}"
echo "- prefix directory: ${PREFIX}"
echo "- build directory: ${BUILDDIR}"
# Create paths used for building and installation
mkdir -v -p "${WORKDIR}" "${BUILDDIR}" "${PREFIX}" && \
cd "${WORKDIR}" && \
# Download gcc
wget -c "https://ftpmirror.gnu.org/${PROD}/${PROD}-${VERSION}/${PROD}-${VERSION}.tar.gz" && \
# Extract gcc archive
tar --overwrite -vxzf "${PROD}-${VERSION}.tar.gz" && \
cd "${WORKDIR}/${PROD}-${VERSION}" && \
# Download prerequisites
contrib/download_prerequisites && \
cd "${WORKDIR}/build" && \
# Configure build
../${PROD}-"${VERSION}"/configure \
--build=x86_64-linux-gnu \
--host=x86_64-linux-gnu \
--target=x86_64-linux-gnu \
--prefix="${PREFIX}" \
--enable-checking=release \
--enable-languages=c,c++ \
--disable-nls \
--disable-multilib \
--program-suffix="-${VERSION}" && \
# Start build
make -s -j "$(nproc)" && \
# Install
make install-strip && \
echo && \
echo "${PROD}-${VERSION} was successfully built and installed in ${PREFIX}" && \
exit 0
else
echo "Version '${VERSION}' does not match a version string of the form n.n.n"
exit 1
fi
- Download the script
Save it as build_gcc.sh
Make it executable with:
chmod +x build_gcc.sh
Check the script's options by executing it as
/build_gcc.sh --help
- Then execute the script with the options of your choice
Using your own version of gcc
To use your own version ofgcc, either
prepend its installation path to your PATH environment variable:
export PATH=/path/to/my/gcc/bin:$PATH
Execute it by calling it with its full path:
/path/to/my/gcc/bin/gcc-n.m.p
where n.m.p is the version of gcc you built
or set your CC environment variable to the full path of your gcc binary:
export CC=/path/to/my/gcc/bin/gcc-n.m.p
Show gcc in your PATH
The following alias lists all found gcc's in your PATH, which is helpful for troubleshooting:
alias showgccs='{ echo "PATH;VERSION" && which -a gcc |while read -r GCC; do echo $GCC && $GCC --version |head -n1; done |paste -d";" - - ;} |column -t -s";"'
Building gcc 5.5.0
The following patch enables building gcc 5.5.0 with gcc 8.3.0:
--- x86_64-linux-gnu/libgcc/md-unwind-support.h.orig 2021-08-26 13:55:12.152350756 +0200
+++ x86_64-linux-gnu/libgcc/md-unwind-support.h 2021-08-26 14:03:59.361317827 +0200
@@ -58,7 +58,7 @@
if (*(unsigned char *)(pc+0) == 0x48
&& *(unsigned long long *)(pc+1) == RT_SIGRETURN_SYSCALL)
{
- struct ucontext *uc_ = context->cfa;
+ struct ucontext_t *uc_ = context->cfa;
/* The void * cast is necessary to avoid an aliasing warning.
The aliasing warning is correct, but should not be a problem
because it does not alias anything. */
@@ -138,7 +138,7 @@
siginfo_t *pinfo;
void *puc;
siginfo_t info;
- struct ucontext uc;
+ ucontext_t uc;
} *rt_ = context->cfa;
/* The void * cast is necessary to avoid an aliasing warning.
The aliasing warning is correct, but should not be a problem
In case you need this version of gcc, apply the patch to the source before running the configure part of the script.