build.sh: compat with gcc 4.4

build.sh

@@ -1,13 +1,17 @@
 #!/bin/bash
 
-# Linux build (Ubuntu 14.04)
+# Linux build
 
 make clean || echo clean
 
 rm -f config.status
 ./autogen.sh || echo done
 
-extracflags="-march=native -Ofast -Wall -D_REENTRANT -flto -fuse-linker-plugin -funroll-loops -fvariable-expansion-in-unroller -ftree-loop-if-convert-stores -fmerge-all-constants -fbranch-target-load-optimize2 -fsched2-use-superblocks -falign-loops=16 -falign-functions=16 -falign-jumps=16 -falign-labels=16"
+# Ubuntu 10.04 (gcc 4.4)
+extracflags="-O3 -march=native -Wall -D_REENTRANT -funroll-loops -fvariable-expansion-in-unroller -fmerge-all-constants -fbranch-target-load-optimize2 -fsched2-use-superblocks -falign-loops=16 -falign-functions=16 -falign-jumps=16 -falign-labels=16"
+
+# Ubuntu 14.04 (gcc 4.8)
+# extracflags="$extracflags -Ofast -flto -fuse-linker-plugin -ftree-loop-if-convert-stores"
 
 ./configure --with-crypto --with-curl CFLAGS="$extracflags"