TIP Safe LDFLAGS

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This article is part of the Tips & Tricks series.

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Contents 1 Safe LDFLAGS ? 2 Remove unneeded symbol references during linking 3 Other LDFLAGS, not necessarily safe 4 Package specific LDFLAGS 5 See Also

[edit] Safe LDFLAGS ?

LDFLAGS="-Wl,-O1"

This tells ld to optimize the hash table. As a side effect the hash table gets larger. This optimization is usually safe. For more information see this article

[edit] Remove unneeded symbol references during linking

LDFLAGS="-Wl,--as-needed"

The case for and against --as-needed

[edit] Other LDFLAGS, not necessarily safe

LDFLAGS="-Wl,--sort-common"
LDFLAGS="-Wl,--relax"

• -Wl,--relax will break glibc
• -Wl,--export-dynamic will also break glibc (or possibly its combination with -Wl,-O1)

[edit] Package specific LDFLAGS

Package	LDFLAGS
x11-drivers/xf86-input-mouse	- Incompatible with --as-needed

[edit] See Also

• Choosing safe CFLAGS
• Hashstyle
• Optimizing Linker Load Times
• LDFLAGS Central - A forum thread for LDFLAGS support
• Are we missing some easy optimizations (LDFLAGS)?
• LDFLAG --as-needed / Speeding up of GNOME or KDE