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authorGustavo Sverzut Barbieri <barbieri@profusion.mobi>2010-10-05 21:45:51 +0200
committerLennart Poettering <lennart@poettering.net>2010-10-05 21:45:51 +0200
commit9b85fc6a89386582bfe792dba881800b0a093839 (patch)
treefd6b1cc21d0ce5c78a5a774aed7678185a337878 /src/hashmap.c
parentdf37291a5198818e5bb1d11c34ba134aa3d79d96 (diff)
build-sys: Add compiler and linker flags to reduce binary size
Reduce number of exported symbols with -fvisibility=hidden by default, this is safe as we're not generating and loadable library and our binaries should have no exported symbol other than main(). This alone reduces around 4kb per binary. It will also request GCC to emit every function and data variable in its own section, then request the linker to remove unused sections. This reduces the size of utility tools (/lib/systemd/systemd-*) by half or even more (in my system some binaries went from 84kb to 32kb).
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