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[build] Eliminate unused sections at link-time

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Use -ffunction-sections, -fdata-sections, and --gc-sections to
automatically prune out any unreferenced sections.

This saves around 744 bytes (uncompressed) from the rtl8139.rom build.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2011-02-22 19:36:24 +00:00
parent f3c72660a7
commit 623469de5d
6 changed files with 37 additions and 10 deletions
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4
src/arch/x86/scripts/efi.lds
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@@ -54,7 +54,7 @@ SECTIONS {
_data = .;
*(.data)
*(.data.*)
*(SORT(.tbl.*)) /* Various tables. See include/tables.h */
KEEP(*(SORT(.tbl.*))) /* Various tables. See include/tables.h */
_edata = .;
}
@@ -80,6 +80,7 @@ SECTIONS {
.weak 0x0 : {
_weak = .;
*(.weak)
*(.weak.*)
_eweak = .;
}
_assert = ASSERT ( ( _weak == _eweak ), ".weak is non-zero length" );
@@ -102,5 +103,6 @@ SECTIONS {
*(.einfo)
*(.einfo.*)
*(.discard)
*(.discard.*)
}
}