change docs gcc toolchain for legacy

Signed-off-by: Telukula Jeevan Kumar Sahu <[email protected]>

Author: jeevantelukula

source/linux/Overview/GCC_ToolChain.rst

@@ -9,12 +9,22 @@ GCC ToolChain Setup
 
 Before compiling any of the sources referenced in this document, set the cross compiler paths to the toolchains packaged in the Processor SDK [Recommended] as shown below. Refer to :ref:`yocto-toolchain` section for more details on usage.
 
-.. code-block:: console
+.. ifconfig:: CONFIG_part_variant in ('AM335X', 'AM437X')
+
+   .. code-block:: console
 
-   host# export CROSS_COMPILE_64="${SDK_INSTALL_DIR}/linux-devkit/sysroots/x86_64-arago-linux/usr/bin/aarch64-oe-linux/aarch64-oe-linux-"
-   host# export SYSROOT_64="${SDK_INSTALL_DIR}/linux-devkit/sysroots/aarch64-oe-linux"
-   host# export CC_64="${CROSS_COMPILE_64}gcc --sysroot=${SYSROOT_64}"
-   host# export CROSS_COMPILE_32="${SDK_INSTALL_DIR}/k3r5-devkit/sysroots/x86_64-arago-linux/usr/bin/arm-oe-eabi/arm-oe-eabi-"
+      host# export CROSS_COMPILE_64="${SDK_INSTALL_DIR}/linux-devkit/sysroots/x86_64-arago-linux/usr/bin/arm-oe-linux-gnueabi/arm-oe-linux-gnueabi-"
+      host# export SYSROOT_64="${SDK_INSTALL_DIR}/linux-devkit/sysroots/armv7at2hf-neon-oe-linux-gnueabi"
+      host# export CC_64="${CROSS_COMPILE_64}gcc --sysroot=${SYSROOT_64}"
+
+.. ifconfig:: CONFIG_part_variant not in ('AM335X', 'AM437X')
+
+   .. code-block:: console
+
+      host# export CROSS_COMPILE_64="${SDK_INSTALL_DIR}/linux-devkit/sysroots/x86_64-arago-linux/usr/bin/aarch64-oe-linux/aarch64-oe-linux-"
+      host# export SYSROOT_64="${SDK_INSTALL_DIR}/linux-devkit/sysroots/aarch64-oe-linux"
+      host# export CC_64="${CROSS_COMPILE_64}gcc --sysroot=${SYSROOT_64}"
+      host# export CROSS_COMPILE_32="${SDK_INSTALL_DIR}/k3r5-devkit/sysroots/x86_64-arago-linux/usr/bin/arm-oe-eabi/arm-oe-eabi-"
 
 If the Processor SDK is not installed, the Arm GNU toolchains can be downloaded and setup. Refer to :ref:`external-arm-toolchain` section for more details on usage.
 
@@ -46,22 +56,41 @@ The |__SDK_FULL_NAME__| package comes with this toolchain preinstalled at linux-
 directory within the SDK. Below paths are relative to the <SDK_INSTALL_DIR> and will be
 referred to using the first column in the following sections.
 
-.. list-table:: Linux Devkit Contents
-   :widths: 20 30 50
-   :header-rows: 1
-
-   * - Variable
-     - Location
-     - Description
-   * - CROSS_COMPILE_64
-     - linux-devkit/sysroots/x86_64-arago-linux/usr/bin/aarch64-oe-linux/aarch64-oe-linux-
-     - Cross compiler toolchain for the ARMv8 architecture
-   * - SYSROOT_64
-     - linux-devkit/sysroots/aarch64-oe-linux/
-     - Sysroot with the cross compiled libraries and headers for the ARMv8 architecture with Linux OS
-   * - ENV_SETUP_64
-     - linux-devkit/environment-setup-aarch64-oe-linux
-     - Shell script that sets environment variables to compile binaries for the ARMv8 linux target
+.. ifconfig:: CONFIG_part_variant in ('AM335X', 'AM437X')
+   .. list-table:: Linux Devkit Contents
+      :widths: 20 30 50
+      :header-rows: 1
+
+      * - Variable
+        - Location
+        - Description
+      * - CROSS_COMPILE_64
+        - linux-devkit/sysroots/x86_64-arago-linux/usr/bin/arm-oe-linux-gnueabi/arm-oe-linux-gnueabi-
+        - Cross compiler toolchain for the ARMv8 architecture
+      * - SYSROOT_64
+        - linux-devkit/sysroots/armv7at2hf-neon-oe-linux-gnueabi/
+        - Sysroot with the cross compiled libraries and headers for the ARMv8 architecture with Linux OS
+      * - ENV_SETUP_64
+        - linux-devkit/environment-setup-armv7at2hf-neon-oe-linux-gnueabi
+        - Shell script that sets environment variables to compile binaries for the ARMv8 linux target
+
+.. ifconfig:: CONFIG_part_variant not in ('AM335X', 'AM437X')
+   .. list-table:: Linux Devkit Contents
+      :widths: 20 30 50
+      :header-rows: 1
+
+      * - Variable
+        - Location
+        - Description
+      * - CROSS_COMPILE_64
+        - linux-devkit/sysroots/x86_64-arago-linux/usr/bin/aarch64-oe-linux/aarch64-oe-linux-
+        - Cross compiler toolchain for the ARMv8 architecture
+      * - SYSROOT_64
+        - linux-devkit/sysroots/aarch64-oe-linux/
+        - Sysroot with the cross compiled libraries and headers for the ARMv8 architecture with Linux OS
+      * - ENV_SETUP_64
+        - linux-devkit/environment-setup-aarch64-oe-linux
+        - Shell script that sets environment variables to compile binaries for the ARMv8 linux target
 
 .. rubric:: Target Sysroot
    :name: cross-compiled-libraries
@@ -145,40 +174,20 @@ libraries.
    - **Compile Directly** : Cross-compile the **helloworld.c** file using the
      cross-compile toolchain directly
 
-     .. ifconfig:: CONFIG_part_variant in ('AM335X', 'AM437X')
-
-       .. code-block:: console
-
-          host# ${CROSS_COMPILE_64}gcc ${CFLAGS} --sysroot=${SYSROOT_64} helloworld.c -o helloworld
-
-       Pass the CFLAGS: :file:`-march=armv7-a` :file:`-mthumb` :file:`-mfpu=neon` :file:`-mfloat-abi=hard`
-       to the cross compiler to avoid the build issues.
-
-     .. ifconfig:: CONFIG_part_variant not in ('AM335X', 'AM437X')
+     .. code-block:: console
 
-       .. code-block:: console
-
-          host# ${CROSS_COMPILE_64}gcc --sysroot=${SYSROOT_64} helloworld.c -o helloworld
+        host# ${CROSS_COMPILE_64}gcc --sysroot=${SYSROOT_64} helloworld.c -o helloworld
 
      Be sure to give the correct path to the gcc cross compiler and target
      sysroot as listed earlier.
 
    - **Using the environement setup script** : Cross-compile after sourcing
      the setup script
 
-     .. ifconfig:: CONFIG_part_variant in ('AM335X', 'AM437X')
-
-       .. code-block:: console
-
-          host# source ${ENV_SETUP_64}
-          host# ${CC} ${CFLAGS} helloworld.c -o helloworld
-
-     .. ifconfig:: CONFIG_part_variant not in ('AM335X', 'AM437X')
-
-       .. code-block:: console
+     .. code-block:: console
 
-          host# source ${ENV_SETUP_64}
-          host# ${CC} helloworld.c -o helloworld
+        host# source ${ENV_SETUP_64}
+        host# ${CC} helloworld.c -o helloworld
 
 3. After the above steps are run you should now have a **helloworld**
    executable in your directory that has been compiled for the ARM. A
@@ -195,32 +204,34 @@ libraries.
 
 .. _k3r5-devkit:
 
-k3r5-devkit
-^^^^^^^^^^^
+.. ifconfig:: CONFIG_part_variant not in ('AM335X', 'AM437X')
 
-.. rubric:: Overview
+   k3r5-devkit
+   ^^^^^^^^^^^
 
-The |__SDK_FULL_NAME__| package comes with an ARMv7 toolchain preinstalled at k3r5-devkit/
-directory within the SDK. Below paths are relative to the <SDK_INSTALL_DIR>.
-
-.. list-table:: k3r5 Devkit Contents
-   :widths: 20 30 50
-   :header-rows: 1
-
-   * - Variable
-     - Location
-     - Description
-   * - CROSS_COMPILE_32
-     - k3r5-devkit/sysroots/x86_64-arago-linux/usr/bin/arm-oe-eabi/arm-oe-eabi-
-     - Cross compiler toolchain for the ARMv7 architecture
-   * - SYSROOT_32
-     - k3r5-devkit/sysroots/armv7at2hf-vfp-oe-eabi/
-     - Sysroot with the cross compiled libraries and headers for the ARMv7 architecture
-   * - ENV_SETUP_32
-     - k3r5-devkit/environment-setup-armv7at2hf-vfp-oe-eabi
-     - Shell script that sets environment variables to compile binaries for the target
+   .. rubric:: Overview
 
-|
+   The |__SDK_FULL_NAME__| package comes with an ARMv7 toolchain preinstalled at k3r5-devkit/
+   directory within the SDK. Below paths are relative to the <SDK_INSTALL_DIR>.
+
+   .. list-table:: k3r5 Devkit Contents
+      :widths: 20 30 50
+      :header-rows: 1
+
+      * - Variable
+        - Location
+        - Description
+      * - CROSS_COMPILE_32
+        - k3r5-devkit/sysroots/x86_64-arago-linux/usr/bin/arm-oe-eabi/arm-oe-eabi-
+        - Cross compiler toolchain for the ARMv7 architecture
+      * - SYSROOT_32
+        - k3r5-devkit/sysroots/armv7at2hf-vfp-oe-eabi/
+        - Sysroot with the cross compiled libraries and headers for the ARMv7 architecture
+      * - ENV_SETUP_32
+        - k3r5-devkit/environment-setup-armv7at2hf-vfp-oe-eabi
+        - Shell script that sets environment variables to compile binaries for the target
+
+   |
 
 
 .. _external-arm-toolchain: