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@@ -1,7 +1,7 @@ Reproducible source for XXXXXXXXXXXXXXXXX ------------------------------------------------------------------------- -Copyright (C) 2018-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>\ +Copyright (C) 2018-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>\ See the end of the file for license conditions. This is the reproducible project source for the paper titled "**XXX XXXXX @@ -188,6 +188,56 @@ analysis and finally create the final paper). + + + + + +### Building on older systems (+10 year old compilers) + +Maneage builds almost all its software itself. But to do that, it needs a C +and C++ compiler on the host. The C++ standard in particular is updated +regularly. Therefore, gradually the basic software packages (that are used +to build the internal Maneage C compiler and other necessary tools) will +start using the newer language features in their newer versions. As a +result, if a host doesn't update its compiler for more than a decade, some +of the basic software may not get built. + +Note that this is only a problem for the "basic" software of Maneage (that +are used to build Maneage's own C compiler), not the high-level (or +science) software. On GNU/Linux systems, the high-level software get built +with Maneage's own C compiler. Therefore once Maneage's C compiler is +built, you don't need to worry about the versions of the high-level +software. + +One solution to such cases is to downgrade the versions of the basic +software that can't be built. For example, when building Maneage in August +2022 on a old Debian GNU/Linux system from 2010 (with GCC 4.4.5 and GNU C +Library 2.11.3 and Linux kernel 2.6.32-5 on an amd64 architecture), the +following low-level packages needed to be downgraded to slightly earlier +versions. + +| Program name | 2022-08 version | Version for old system | +|:------------------------------|:---------------:|:----------------------:| +| PatchELF | 0.13 | 0.9 | +| GNU Binutils | 2.39 | 2.37 | +| GNU Compiler Collection (GCC) | 12.1.0 | 10.2.0 | + +As you can see above, fortunately most basic software in Maneage respect ++10 year old compilers and are build-able there. So your higher-level +science software should be buildable with out changing their versions. It +is _highly improbable_ that these downgrades will affect your final science +result. + + + + + + + + + + ### Building on ARM As of 2021-10-13, very little testing of Maneage has been done on arm64 @@ -237,6 +287,11 @@ light and should be very fast. + + + + + ### Building in Docker containers Docker containers are a common way to build projects in an independent @@ -534,7 +589,12 @@ steps. following contents. Just replace `UID` with your user ID (found in step 1 above). Note that we are manually setting the `maneager` (user) password to `123` and the root password to '456' (both should be - repeated because they must be confirmed by `passwd`). + repeated because they must be confirmed by `passwd`). To install other + operating systems, just change the contents on the `FROM` line. For + example, for CentOS 7 you can use `FROM centos:centos7`, for the + latest CentOS, you can use `FROM centos:latest` (you may need to add + this line `RUN yum install -y passwd` before the `RUN useradd ...` + line.). ``` FROM debian:stable-slim @@ -658,7 +718,11 @@ steps. versions of both and will use them. But for the very first packages, they are necessary. In the process, by setting the `PS1` environment variable, we'll define a color-coding for the interactive shell prompt - (red for root and purple for the user). + (red for root and purple for the user). If you build another operating + system, replace the `apt` commands accordingly (for example on CentOS, + you don't need the `apt update` line and you should use `yum install + -y gcc gcc-c++ wget glibc-static` to install the three basic + dependencies). ```shell su |