asheplyakov/cross-toolchain
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Attempt to cope with ALT Linux' FHS idiocy

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Apparently obeing FHS is more important than having a working
(cross-) compiler.
This commit is contained in:
Alexey Sheplyakov 2021-06-11 16:08:28 +00:00
parent 708060b302
commit e3b5169d89
2 changed files with 19 additions and 4 deletions
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6
altcross.sh
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@ -124,6 +124,12 @@ make -j$(nproc) install DESTDIR="$INSTALLDIR"
# set /lib64/ld-linux-aarch64.so.1 as ELF interpreter
$INSTALLDIR/bin/${TARGET}-gcc -dumpspecs > $BUILDDIR/specs
sed -e 's;/lib/ld-linux-aarch64;/lib64/ld-linux-aarch64;g' -i $BUILDDIR/specs
# Use aarch64-linux-gnu-as instead of generic `as`
sed -e "/^[*]invoke_as:/,/^[*]cpp:/ s; as ; ../../../../bin/${TARGET}-as ;" -i $BUILDDIR/specs
# Same for objcopy
sed -e "s; objcopy ; ../../../../bin/${TARGET}-objcopy /" -i $BUILDDIR/specs
mv $BUILDDIR/specs "$INSTALLDIR/lib/gcc/$TARGET/${GCC_MAJOR_VERSION}/"
# relocate libgcc_s

17
cross-toolchain.spec
View File

@ -17,7 +17,7 @@ ExclusiveArch: x86_64
%define glibc_evr 2.27-alt13
%define kernel_version 5.4
%define sysroot %prefix/%target/sys-root
%define sysroot %prefix/lib/%target/sys-root
%define target_ld_linux /lib64/ld-linux-aarch64.so.1
Summary: aarch64-targeted GCC cross-toolchain
@ -173,7 +173,7 @@ export PATH=`pwd`/stage%prefix/bin:$PATH
headers_install
cd obj_binutils
%make_install install DESTDIR=%buildroot
%make_install install DESTDIR=%buildroot tooldir=%prefix/libexec/gcc/%target
cd ../obj_glibc
%make_install install DESTDIR=%buildroot%sysroot
@ -189,7 +189,15 @@ rmdir %buildroot%prefix/lib/gcc/%target/lib64
# Make sure cross-toolchain we build does the same thing.
%buildroot%prefix/bin/%target-gcc -dumpspecs > specs
sed -e "s;/lib/ld-linux-aarch64;/lib64/ld-linux-aarch64;g" -i specs
# Assembler: %%target-as.
# Path is relative to %%prefix/lib/gcc/%%target/%%gcc_branch
sed -e '/^[*]invoke_as:/,/^[*]cpp:/ s; as ; ../../../../bin/%target-as ;' -i specs
# objcopy: %%target-objcopy
sed -e 's; objcopy ; ../../../../bin/%target-objcopy ;' -i specs
install -m 644 specs %buildroot%prefix/lib/gcc/%target/%gcc_branch/specs
# Note: collect2 (GCCs linker wrapper) searches for %%target-ld on its own.
# Alas it does not use relative paths and is not adjustable via the specs file
# XXX: ABI: which is correct location of ELF interpreter for aarch64?
# Native glibc provides ld-linux-aarch64.so.1 in both /lib64 and /lib.
@ -251,7 +259,10 @@ EOF
gcc_runtime_libdir=`dirname $(%buildroot%prefix/bin/%target-gcc --print-libgcc-file-name)`
# XXX: PATH= is necessary for collect2 to find %%target-ld
env PATH=%buildroot%prefix/bin:$PATH \
%buildroot%prefix/bin/%target-gcc -o hello_c hello.c || exit 2
env PATH=%buildroot%prefix/bin:$PATH \
%buildroot%prefix/bin/%target-g++ -o hello_cpp hello.cpp || exit 3
# Note: LD_LIBRARY_PATH is for **target** ld.so.
@ -266,8 +277,6 @@ env LD_LIBRARY_PATH=%buildroot%sysroot/lib64:${gcc_runtime_libdir} \
%_bindir/*
%prefix/lib/gcc/%target/%gcc_branch/*
%prefix/libexec/gcc/%target/*
%prefix/%target/bin/*
%prefix/%target/lib/ldscripts/*
%sysroot/usr/include/*
# XXX: gcc needs %%sysroot/usr/lib to locate C runtime (crt1.o)
%sysroot/usr/lib