73 lines
1.7 KiB
Markdown
73 lines
1.7 KiB
Markdown
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# INSTALLATION
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## Cross compile the compile
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### WHY ??
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Why cross compile the gcc ?
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We must cross compile gcc cause our kernel is developped for i386 cpu but your current cpu is probally not an i386 so we need to create an i386 compiler
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### HOW ?
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[THE DOCUMENTATION](https://wiki.osdev.org/GCC_Cross-Compiler)
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- install requirement follow [THE DOCUMENTATION](https://wiki.osdev.org/GCC_Cross-Compiler)
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- Setup the shell
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``` sh
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export PREFIX="$HOME/opt/cross"
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export TARGET=i386-elf
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export PATH="$PREFIX/bin:$PATH"
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mkdir $HOME/src
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cd $HOME/src
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```
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- Download [binutils](https://ftp.gnu.org/gnu/binutils/?C=M;O=D)
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- Download [gcc](https://ftp.gnu.org/gnu/gcc/?C=M;O=D)
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- Download [gdb](https://ftp.gnu.org/gnu/gdb/?C=M;O=D)
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- extract archives
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``` sh
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tar xf [your binutils archive]
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tar xf [your gcc archive]
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tar xf [your gdb archive]
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```
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- (protips use -j [nb core])
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- Compile binutils
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``` sh
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cd $HOME/src
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mkdir build-binutils
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cd build-binutils
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../binutils-x.y.z/configure --target=$TARGET --prefix="$PREFIX" --with-sysroot --disable-nls --disable-werror
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make
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make install
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```
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- Compile gdb
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``` sh
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cd $HOME/src
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mkdir build-gdb
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cd build-gdb
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../gdb.x.y.z/configure --target=$TARGET --prefix="$PREFIX" --disable-werror
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make all-gdb
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make install-gdb
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make
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make install
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```
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- Compile gcc
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``` sh
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cd $HOME/src
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# The $PREFIX/bin dir _must_ be in the PATH. We did that above.
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which -- $TARGET-as || echo $TARGET-as is not in the PATH
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mkdir build-gcc
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cd build-gcc
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../gcc-x.y.z/configure --target=$TARGET --prefix="$PREFIX" --disable-nls --enable-languages=c,c++ --without-headers
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make all-gcc
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make all-target-libgcc
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make install-gcc
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make install-target-libgcc
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```
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## Compile and the start the kernel
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``` sh
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make run
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```
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