diff --git a/README.md b/README.md
index ef0d50f..88b74b8 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,11 @@
# dockcross
-
Cross compiling toolchains in Docker images.
-[](https://github.com/dockcross/dockcross/actions?query=branch%3Amaster)
+[](https://github.com/dockcross/dockcross/actions?query=branch%3Amaster) [](https://github.com/dockcross/dockcross/actions/workflows/shellcheck.yml)
+
+ 
## Features
@@ -24,8 +25,7 @@ Cross compiling toolchains in Docker images.
Windows](https://docs.docker.com/docker-for-windows/).
- Support using alternative container executor by setting
[OCI_EXE]{.title-ref} environment variable. By default, it searches
- for [docker]{.title-ref} and
- \[[podman]{.title-ref}\]() executable.
+ for [docker]{.title-ref} and [podman](https://podman.io) executable.
## Examples
@@ -41,27 +41,23 @@ Cross compiling toolchains in Docker images.
Note that commands are executed verbatim. If any shell processing for
environment variable expansion or redirection is required, please use
-[bash -c \'command args\...\']{.title-ref}.
+```bash
+bash -c ""
+```
## Installation
-This image does not need to be run manually. Instead, there is a helper
-script to execute build commands on source code existing on the local
-host filesystem. This script is bundled with the image.
+This image does not need to be run manually. Instead, there is a helper script to execute build commands on source code existing on the local host filesystem. This script is bundled with the image.
-To install the helper script, run one of the images with no arguments,
-and redirect the output to a file:
+To install the helper script, run one of the images with no arguments, and redirect the output to a file:
docker run --rm CROSS_COMPILER_IMAGE_NAME > ./dockcross
chmod +x ./dockcross
mv ./dockcross ~/bin/
-Where [CROSS_COMPILER_IMAGE_NAME]{.title-ref} is the name of the
-cross-compiler toolchain Docker instance, e.g.
-[dockcross/linux-armv7]{.title-ref}.
+Where **CROSS_COMPILER_IMAGE_NAME** is the name of the cross-compiler toolchain Docker instance, e.g: **dockcross/linux-armv7**.
-Only 64-bit x86_64 images are provided; a 64-bit x86_64 host system is
-required.
+Only 64-bit x86_64 images are provided; a 64-bit x86_64 host system is required.
## Usage
@@ -72,249 +68,257 @@ For the impatient, here\'s how to compile a hello world for armv7:
chmod +x ./dockcross-linux-armv7
./dockcross-linux-armv7 bash -c '$CC test/C/hello.c -o hello_arm'
-Note how invoking any toolchain command (make, gcc, etc.) is just a
-matter of prepending the **dockcross** script on the commandline:
+Note how invoking any toolchain command (make, gcc, etc.) is just a matter of prepending the **dockcross** script on the commandline:
./dockcross-linux-armv7 [command] [args...]
-The dockcross script will execute the given command-line inside the
-container, along with all arguments passed after the command. Commands
-that evaluate environmental variables in the image, like
-[\$CC]{.title-ref} above, should be executed in [bash -c].
-The present working directory is mounted within the image, which can be
-used to make source code available in the Docker container.
+The dockcross script will execute the given command-line inside the container, along with all arguments passed after the command. Commands that evaluate environmental variables in the image, like **$CC** or **$CXX** above, should be executed in [bash -c]. The present working directory is mounted within the image, which can be used to make source code available in the Docker container.
+
+## Summary cross compilers
+
+| Image name | Arch | Compiler | Target OS |
+|:-------:|:--------:|:------:|:-----:|
+| dockcross/base | - | - | - |
+| dockcross/android-arm | ARMv7 | Clang | Android 32 bit |
+| dockcross/android-arm64 | ARMv8 | Clang | Android |
+| dockcross/android-x86 | x86 | Clang | Android x86 |
+| dockcross/android-x86_64 | x86_64 | Clang | Android x86_64 |
+| dockcross/linux-arm64 | ARMv8 | GCC | Linux ARMv8 |
+| dockcross/linux-arm64-musl | ARMv8 | GCC + musl | Linux ARMv8 |
+| dockcross/linux-armv5 | ARMv5 | GCC | Linux ARMv5 |
+| dockcross/linux-armv5-musl | ARMv5 | GCC + musl | Linux ARMv5 |
+| dockcross/linux-armv6 | ARMv6 | GCC | Linux ARMv6 |
+| dockcross/linux-armv6-lts | ARMv6 | GCC + Glibc 2.28 | Linux ARMv6 |
+| dockcross/linux-armv6-musl | ARMv6 | GCC + musl | Linux ARMv6 |
+| dockcross/linux-armv7 | ARMv7 | GCC | Linux ARMv7 |
+| dockcross/linux-armv7a | ARMv7a | GCC | Linux ARMv7a |
+| dockcross/linux-armv7l-musl | ARMv7l | GCC + musl | Linux ARMv7l |
+| dockcross/linux-mips | mips | GCC | Linux mips |
+| dockcross/linux-s390x | s390x | GCC | Linux s390x |
+| dockcross/linux-ppc64le | ppc64le | GCC | Linux ppc64le |
+| dockcross/linux-riscv32 | riscv32 | GCC | Linux riscv32 |
+| dockcross/linux-riscv64 | riscv64 | GCC | Linux riscv64 |
+| dockcross/linux-m68k-uclibc | m68k | GCC + uclibc | Linux m68k |
+| dockcross/linux-xtensa-uclibc | xtensa | GCC + uclibc | Linux xtensa |
+| dockcross/manylinux2014-x86 | x86 | GCC | Linux x86 |
+| dockcross/manylinux2014-x64 | x86_64 | GCC | Linux x86_64 |
+| dockcross/linux-x86 | x86 | GCC | Linux x86 |
+| dockcross/linux-x64 | x86_64 | GCC | Linux x86_64 |
+| dockcross/linux-x64-clang | x86_64 | Clang | Linux x86_64 |
+| dockcross/web-wasm | JS | LLVM | Web (JS) |
+| dockcross/windows-shared-x86 | x86 | GCC | Windows x86 |
+| dockcross/windows-shared-x64 | x86_64 | GCC | Windows x86_64 |
+| dockcross/windows-shared-x64-posix | x86_64 | GCC | Windows x86_64 |
+| dockcross/windows-static-x86 | x86 | GCC | Windows x86 |
+| dockcross/windows-static-x64 | x86_64 | GCC | Windows x86_64 |
+| dockcross/windows-static-x64-posix | x86_64 | GCC | Windows x86_64 |
## Cross compilers
### dockcross/base
-   
+  
-Base image for other toolchain images. From Debian Jessie with GCC,
-make, autotools, CMake, Ninja, Git, and Python.
+Base image for other toolchain images. From Debian Jessie with GCC, make, autotools, CMake, Ninja, Git, and Python.
### dockcross/android-arm
-  
+ 
The Android NDK standalone toolchain for the arm architecture.
### dockcross/android-arm64
-  
+ 
The Android NDK standalone toolchain for the arm64 architecture.
### dockcross/android-x86
-  
+ 
The Android NDK standalone toolchain for the x86 architecture.
### dockcross/android-x86_64
-  
+ 
The Android NDK standalone toolchain for the x86_64 architecture.
### dockcross/linux-arm64
-  
+ 
-Cross compiler for the 64-bit ARM platform on Linux, also known as
-AArch64.
+Cross compiler for the 64-bit ARM platform on Linux, also known as AArch64.
### dockcross/linux-arm64-musl
-  
+ 
Cross compiler for the 64-bit ARM platform on Linux (also known as
AArch64), using [musl](https://www.musl-libc.org/) as base \"libc\".
### dockcross/linux-armv5
-  
+ 
Linux armv5 cross compiler toolchain for legacy devices like the
Parrot AR Drone.
### dockcross/linux-armv5-musl
-  
+ 
Linux armv5 cross compiler toolchain using
[musl](https://www.musl-libc.org/) as base \"libc\".
### dockcross/linux-armv6
-  
+ 
Linux ARMv6 cross compiler toolchain for the Raspberry Pi
### dockcross/linux-armv6-lts
-  
+ 
Linux ARMv6 cross compiler toolchain for the Raspberry Pi (Debian buster...)
### dockcross/linux-armv6-musl
-  
+ 
Linux ARMv6 cross compiler toolchain for the Raspberry Pi, etc,
using [musl](https://www.musl-libc.org/) as base \"libc\".
### dockcross/linux-armv7
-  
+ 
Generic Linux armv7 cross compiler toolchain.
### dockcross/linux-armv7a
-  
+ 
Toolchain configured for ARMv7-A used in Beaglebone Black single
board PC with TI SoC AM3358 on board, Cortex-A8.
### dockcross/linux-armv7l-musl
-  
+ 
Toolchain configured for ARMv7-L, using
[musl](https://www.musl-libc.org/) as base \"libc\".
-### dockcross/linux-mipsel
-
-  
-
-Linux mipsel cross compiler toolchain for little endian MIPS GNU
-systems.
-
### dockcross/linux-mips
-  
+ 
Linux mips cross compiler toolchain for big endian 32-bit hard float
MIPS GNU systems.
### dockcross/linux-s390x
-  
+ 
Linux s390x cross compiler toolchain for S390X GNU systems.
### dockcross/linux-riscv64
-  
+ 
Linux risc-v 64bit cross compiler toolchain for risc-v 64bit GNU systems.
### dockcross/linux-riscv32
-  
+ 
Linux risc-v 32bit cross compiler toolchain for risc-v 32bit GNU systems.
### dockcross/linux-m68k-uclibc
-  
+ 
Linux m68k cross compiler toolchain for m68k GNU systems (http://www.mac.linux-m68k.org/ and http://www.linux-m68k.org/).
### dockcross/linux-ppc64le
-  
+ 
-Linux PowerPC 64 little endian cross compiler toolchain for the
-POWER8, etc. Important: Due to Issue #430, automatic build of newer
-images has been disabled.
+Linux PowerPC 64 little endian cross compiler toolchain for the POWER8, etc. Important: Due to Issue #430, automatic build of newer images has been disabled.
### dockcross/linux-x64
-  
+ 
-Linux x86_64 / amd64 compiler. Since the Docker image is natively
-x86_64, this is not actually a cross compiler.
+Linux x86_64/amd64 compiler. Since the Docker image is natively x86_64, this is not actually a cross compiler.
### dockcross/linux-x64-clang
-  
+ 
-Linux clang x86_64 / amd64 compiler. Since the Docker image is
-natively x86_64, this is not actually a cross compiler.
+Linux clang x86_64/amd64 compiler. Since the Docker image is natively x86_64, this is not actually a cross compiler.
### dockcross/linux-x86
-  
+ 
Linux i686 cross compiler.
### dockcross/manylinux2014-x64
-  
+ 
-Docker [manylinux2014](https://github.com/pypa/manylinux) image for
-building Linux x86_64 / amd64 [Python wheel
-packages](http://pythonwheels.com/). It includes Python 3.5, 3.6,
-3.7, 3.8, and 3.9. Also has support for the dockcross script, and it
-has installations of CMake, Ninja, and
-[scikit-build](http://scikit-build.org). For CMake, it sets
-[MANYLINUX2014]{.title-ref} to \"TRUE\" in the toolchain.
+Docker [manylinux2014](https://github.com/pypa/manylinux) image for building Linux x86_64 / amd64 [Python wheel packages](http://pythonwheels.com/). It includes Python 3.5, 3.6, 3.7, 3.8, and 3.9. Also has support for the dockcross script, and it has installations of CMake, Ninja, and [scikit-build](http://scikit-build.org). For CMake, it sets **MANYLINUX2014** to \"TRUE\" in the toolchain.
### dockcross/manylinux2014-x86
-  
+ 
-Docker [manylinux2014](https://github.com/pypa/manylinux) image for
-building Linux i686 [Python wheel
-packages](http://pythonwheels.com/). It includes Python 3.5, 3.6,
-3.7, 3.8, and 3.9. Also has support for the dockcross script, and it
-has installations of CMake, Ninja, and
-[scikit-build](http://scikit-build.org). For CMake, it sets
-[MANYLINUX2014]{.title-ref} to \"TRUE\" in the toolchain.
+Docker [manylinux2014](https://github.com/pypa/manylinux) image for building Linux i686 [Python wheel packages](http://pythonwheels.com/). It includes Python 3.5, 3.6, 3.7, 3.8, and 3.9. Also has support for the dockcross script, and it has installations of CMake, Ninja, and [scikit-build](http://scikit-build.org). For CMake, it sets **MANYLINUX2014** to \"TRUE\" in the toolchain.
### dockcross/web-wasm
-  
+ 
The Emscripten WebAssembly/asm.js/JavaScript cross compiler.
### dockcross/windows-static-x64
-  
+ 
64-bit Windows cross-compiler based on [MXE/MinGW-w64](https://mxe.cc/) with win32 threads and static
linking.
### dockcross/windows-static-x64-posix
-  
+ 
64-bit Windows cross-compiler based on [MXE/MinGW-w64](https://mxe.cc/) with posix threads and static
linking.
### dockcross/windows-static-x86
-  
+ 
32-bit Windows cross-compiler based on [MXE/MinGW-w64](https://mxe.cc/) with win32 threads and static linking.
### dockcross/windows-shared-x64
-  
+ 
64-bit Windows cross-compiler based on [MXE/MinGW-w64](https://mxe.cc/) with win32 threads and dynamic linking.
### dockcross/windows-shared-x64-posix
-  
+ 
64-bit Windows cross-compiler based on [MXE/MinGW-w64](https://mxe.cc/) with posix threads and dynamic linking.
### dockcross/windows-shared-x86
-  
+ 
32-bit Windows cross-compiler based on [MXE/MinGW-w64](https://mxe.cc/) with win32 threads and dynamic linking.
@@ -389,15 +393,11 @@ Default: Image with which the script was created.
### DOCKCROSS_ARGS / \--args\|-a \
-Extra arguments to pass to the `docker run` command. Quote the entire
-set of args if they contain spaces.
+Extra arguments to pass to the `docker run` command. Quote the entire set of args if they contain spaces.
## Per-project dockcross configuration
-If a shell script named `.dockcross` is found in the current directory
-where the dockcross script is started, it is executed before the
-dockcross script `command` argument. The shell script is expected to
-have a shebang like `#!/usr/bin/env bash`.
+If a shell script named `.dockcross` is found in the current directory where the dockcross script is started, it is executed before the dockcross script `command` argument. The shell script is expected to have a shebang like `#!/usr/bin/env bash`.
For example, commands like
`git config --global advice.detachedHead false` can be added to this
@@ -427,31 +427,17 @@ And then in the shell:
chmod +x linux-armv7 ## Gives the script execution permission.
./linux-armv7 bash ## Runs the helper script with the argument "bash", which starts an interactive container using your extended image.
-## What is the difference between [dockcross]{.title-ref} and [dockbuild]{.title-ref} ?
+## What is the difference between **dockcross** and **dockbuild** ?
-The key difference is that
-[dockbuild](https://github.com/dockbuild/dockbuild#readme) images do
-**NOT** provide a [toolchain
-file](https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html)
-but they use the same method to conveniently isolate the build
-environment as
-[dockcross](https://github.com/dockcross/dockcross#readme).
+The key difference is that [dockbuild](https://github.com/dockbuild/dockbuild#readme) images do **NOT** provide a [toolchain file](https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html) but they use the same method to conveniently isolate the build environment as [dockcross](https://github.com/dockcross/dockcross#readme).
-[dockbuild]{.title-ref} is used to build binaries for Linux x86_64 /
-amd64 that will work across most Linux distributions.
-[dockbuild]{.title-ref} performs a native Linux build where the host
-build system is a Linux x86_64 / amd64 Docker image (so that it can be
-used for building binaries on any system which can run Docker images)
-and the target runtime system is Linux x86_x64 / amd64.
+**dockbuild** is used to build binaries for Linux x86_64/amd64 that will work across most Linux distributions.
+**dockbuild** performs a native Linux build where the host build system is a Linux x86_64 / amd64 Docker image (so that it can be used for building binaries on any system which can run Docker images) and the target runtime system is Linux x86_x64/ amd64.
-[dockcross]{.title-ref} is used to build binaries for many different
-platforms. [dockcross]{.title-ref} performs a cross compilation where
-the host build system is a Linux x86_64 / amd64 Docker image (so that it
-can be used for building binaries on any system which can run Docker
-images) and the target runtime system varies.
+**dockcross** is used to build binaries for many different platforms. **dockcross** performs a cross compilation where the host build system is a Linux x86_64 / amd64 Docker image (so that it can be used for building binaries on any system which can run Docker images) and the target runtime system varies.
\-\--
-Credits go to
-[sdt/docker-raspberry-pi-cross-compiler](https://github.com/sdt/docker-raspberry-pi-cross-compiler),
-who invented the base of the **dockcross** script.
+Credits:
+- [sdt/docker-raspberry-pi-cross-compiler](https://github.com/sdt/docker-raspberry-pi-cross-compiler), who invented the base of the **dockcross** script.
+- [https://github.com/steeve/cross-compiler](https://github.com/steeve/cross-compiler),