scripts/build/binutils/sstrip.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Sep 12 23:51:25 2010 +0200 (2010-09-12)
changeset 2123 ff2181adbd28
parent 1856 e23ffb5c7928
child 2324 68ec66ee2ff9
permissions -rw-r--r--
cc/gcc: disable complibs if not selected

Force gcc to not link with some companion libraries when
there are not needed (because selected-out).

There is no option to tell gcc *not* to build the Graphite and/or
LTO stuff. They *will* be built if gcc finds the suitable companion
libraries. If we do not provide them, but the host has them, then
gcc *will* find them, and link with them.

Consider the following:
- host has suitable PPL and CLooG (eg. Debian Squeeze)
- user wants to build gcc>=4.4
- user de-selects GRAPHITE
- gcc will find the hosts PPL and CLooG, and will use them
- the user moves the toolchain to an older host that does
not have them (eg. Debian Lenny)
- the toolchain fails, when it was properly setup not to

So, explicitly tell gcc *not* to use unneeded companion libs.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
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# This will build and install sstrip to run on host and sstrip target files
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do_sstrip_get() { :; }
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do_sstrip_extract() { :; }
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do_sstrip() { :; }
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if [ "${CT_SSTRIP}" = "y" ]; then
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    do_sstrip_get() {
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        CT_GetFile sstrip .c http://git.buildroot.net/buildroot/plain/toolchain/sstrip
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    }
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    do_sstrip_extract() {
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        # We leave the sstrip maintenance to the buildroot people:
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        # -> any fix-up goes directly there
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        # -> we don't have patches for it
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        # -> we don't need to patch it
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        # -> just create a directory in src/, and copy it there.
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        CT_DoExecLog DEBUG mkdir -p "${CT_SRC_DIR}/sstrip"
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        CT_DoExecLog DEBUG cp -v "${CT_TARBALLS_DIR}/sstrip.c" "${CT_SRC_DIR}/sstrip"
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    }
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    do_sstrip() {
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        CT_DoStep INFO "Installing sstrip"
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        mkdir -p "${CT_BUILD_DIR}/build-sstrip"
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        cd "${CT_BUILD_DIR}/build-sstrip"
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        CT_DoLog EXTRA "Building sstrip"
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        CT_DoExecLog ALL "${CT_HOST}-gcc" -Wall -o sstrip "${CT_SRC_DIR}/sstrip/sstrip.c"
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        CT_DoLog EXTRA "Installing sstrip"
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        CT_DoExecLog ALL install -m 755 sstrip "${CT_PREFIX_DIR}/bin/${CT_TARGET}-sstrip"
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        CT_EndStep
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    }
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fi