mirror of
git://git.musl-libc.org/musl
synced 2024-12-24 07:32:49 +00:00
fb58545f8d
musl-clang allows the user to compile musl-powered programs using their already existent clang install, without the need of a special cross compiler. it achieves this by wrapping around both the system clang install and the linker and passing them special flags to re-target musl at runtime. it does only affect invocations done through the special musl-clang wrapper script, so that the user setup remains fully intact otherwise. the clang wrapper consists of the compiler frontend wrapper script, musl-clang, and the linker wrapper script, ld.musl-clang. musl-clang makes sure clang invokes ld.musl-clang to link objects; neither script needs to be in PATH for the wrapper to work.
36 lines
635 B
Bash
36 lines
635 B
Bash
#!/bin/sh
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cc="@CC@"
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libc="@PREFIX@"
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libc_inc="@INCDIR@"
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libc_lib="@LIBDIR@"
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thisdir="`cd "$(dirname "$0")"; pwd`"
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# prevent clang from running the linker (and erroring) on no input.
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sflags=
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eflags=
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for x ; do
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case "$x" in
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-l*) input=1 ;;
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*) input= ;;
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esac
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if test "$input" ; then
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sflags="-l-user-start"
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eflags="-l-user-end"
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break
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fi
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done
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exec $cc \
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-B"$thisdir" \
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-fuse-ld=musl-clang \
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-static-libgcc \
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-nostdinc \
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--sysroot "$libc" \
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-isystem "$libc_inc" \
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-L-user-start \
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$sflags \
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"$@" \
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$eflags \
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-L"$libc_lib" \
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-L-user-end
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