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Toolchain: Allow building shared objects
Here goes a small first step towards dynamic linking.
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@ -100,6 +100,7 @@ pushd "$DIR/Build/"
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"$DIR"/Tarballs/binutils-2.33.1/configure --prefix="$PREFIX" \
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--target="$TARGET" \
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--with-sysroot="$SYSROOT" \
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--enable-shared \
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--disable-nls || exit 1
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make -j "$MAKEJOBS" || exit 1
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make install || exit 1
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@ -111,6 +112,7 @@ pushd "$DIR/Build/"
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--with-sysroot="$SYSROOT" \
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--disable-nls \
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--with-newlib \
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--enable-shared \
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--enable-languages=c,c++ || exit 1
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echo "XXX build gcc and libgcc"
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@ -137,10 +137,10 @@ index 000000000..24b29c3da
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+#define PTRDIFF_TYPE "long int"
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diff --git a/gcc/config/serenity.h b/gcc/config/serenity.h
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new file mode 100644
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index 000000000..60ebec583
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index 000000000..925c88dd6
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--- /dev/null
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+++ b/gcc/config/serenity.h
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@@ -0,0 +1,28 @@
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@@ -0,0 +1,31 @@
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+/* Useful if you wish to make target-specific GCC changes. */
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+#undef TARGET_SERENITY
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+#define TARGET_SERENITY 1
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@ -159,6 +159,9 @@ index 000000000..60ebec583
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+#undef ENDFILE_SPEC
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+#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
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+
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+#undef LINK_SPEC
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+#define LINK_SPEC "%{shared:-shared} %{static:-static} %{!shared: %{!static: %{rdynamic:-export-dynamic}}}"
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+
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+/* Additional predefined macros. */
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+#undef TARGET_OS_CPP_BUILTINS
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+#define TARGET_OS_CPP_BUILTINS() \
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