MidgardOS Developer Documentation

A website documenting creating the build root for MidgardOS

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Section 5 - Building the Base System Tools

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GNU GLibC 32-bit

Name: GNU GLibC 32-bit
Summary: The GNU C language runtime library - 64-bit
License: GPL v3 or later
Version: 2.42
URL: https://ftp.gnu.org/gnu/glibc/glibc-2.42.tar.xz

Average Build Time: 6 SBU
Used Install Space: 1.2 GiB

Configuration

To configure GNU GLibC 32-bit for install into the build root, run the following command:

rm -rf ./*
find .. -name "*.a" -delete
CC="gcc -m32" CXX="g++ -m32" \
../configure                                                         \
      --prefix=/usr                                                  \
      --host=i686-pc-linux-gnu                                       \
      --build=$(../scripts/config.guess)                             \
      --libdir=/usr/lib                                              \
      --libexecdir=/usr/lib                                          \
      --disable-werror                                               \
      libc_cv_slibdir=/usr/lib                                       \
      --enable-stackguard-randomization                              \
      --enable-tunables                                              \
      --with-bugurl="https://github.com/MidgardOS/MidgardOS/Issues"  \
      --enable-kernel=5.4

Compilation and Installation

To compile GNU GLibC 32-bit, run the following command:

make

Finally, to install GNU GLibC 32-bit into the build tree, run the following command:

make DESTDIR=$PWD/DESTDIR install
cp -a DESTDIR/usr/lib/* /usr/lib/
install -vm644 DESTDIR/usr/include/gnu/{lib-names,stubs}-32.h /usr/include/gnu/

Once the 32-bit libraries are installed, it is a good idea to validate that the C runtime is working as expected. To do so, run the following commands:

echo 'int main(){}' > dummy.c
gcc -m32 dummy.c
readelf -l a.out | grep '/ld-linux'

If everything worked correctly, the output from the above commands should look like the following:

      [Requesting program interpreter: /lib/ld-linux.so.2]

Contents

See the previous 64-bit build of GLibC to read about which libraries have been installed.

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