cross compiling with autoconf

Question

I was trying to cross compile with autoconf. I had tried from these helps : https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Hosts-and-Cross_002dCompilation.html https://www.gnu.org/software/autoconf/manual/autoconf-2.65/html_node/Specifying-Target-Triplets.html - https://github.com/jedisct1/libsodium/issues/274 - Cross Compiling For ARM With Autoconf And did - ``` ./configure --build=x86_64-linux-gnu --host=/opt/toolchains/gcc-linaro-5.4.1-2017.01-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf --target=/opt/toolchains/gcc-linaro-5.4.1-2017.01-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf --disable-shared --disable-documentation ``` But after autoconf tool checking for the gcc and other things necessary for compilation it doesn't find these. Although they are already present in the directory. So the log is : ``` checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for /opt/toolchains/gcc-li…

Accepted Answer

Ensure the directory containing your toolchain's binaries is in your `$PATH`:

```
export OLDPATH=$PATH
export PATH=$OLDPATH:/opt/toolchains/gcc-linaro-5.4.1-2017.01-x86_64_arm-linux-gnueabihf/bin
```

You should only need to do that once, unless you log out or otherwise exit that terminal session.

With that done, you can configure properly:

```
./configure \
    --build=x86_64-linux-gnu \
    --host=arm-linux-gnueabihf \
    --target=arm-linux-gnueabihf \
    --disable-shared \
    --disable-documentation
```

cross compiling with autoconf

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