2 # Script to test if gcc "-fwhole-program" works properly.
5 TMPFILE1=out/tmp_testcompile1.c
6 TMPFILE1o=out/tmp_testcompile1.o
7 TMPFILE2=out/tmp_testcompile2.c
8 TMPFILE2o=out/tmp_testcompile2.o
9 TMPFILE3o=out/tmp_testcompile3.o
11 # Test for "-fwhole-program"
12 $CC -fwhole-program -S -o /dev/null -xc /dev/null > /dev/null 2>&1
14 echo "This version of gcc does not support -fwhole-program." > /dev/fd/2
15 echo "Please upgrade to gcc v4.1 or later" > /dev/fd/2
20 # Test if "visible" variables are marked global.
21 cat - > $TMPFILE1 <<EOF
22 unsigned char t1 __attribute__((section(".data16.foo.19"))) __attribute__((externally_visible));
24 $CC -Os -c -fwhole-program $TMPFILE1 -o $TMPFILE1o > /dev/null 2>&1
25 cat - > $TMPFILE2 <<EOF
26 extern unsigned char t1;
27 int __attribute__((externally_visible)) main() { return t1; }
29 $CC -Os -c -fwhole-program $TMPFILE2 -o $TMPFILE2o > /dev/null 2>&1
30 $CC -nostdlib -Os $TMPFILE1o $TMPFILE2o -o $TMPFILE3o > /dev/null 2>&1
32 echo "This version of gcc does not properly handle" > /dev/fd/2
33 echo " global variables in -fwhole-program mode." > /dev/fd/2
34 echo "Please upgrade to a newer gcc (eg, v4.3 or later)" > /dev/fd/2
39 # Test if "visible" functions are marked global.
40 cat - > $TMPFILE1 <<EOF
41 void __attribute__((externally_visible)) t1() { }
43 $CC -Os -c -fwhole-program $TMPFILE1 -o $TMPFILE1o > /dev/null 2>&1
44 cat - > $TMPFILE2 <<EOF
46 void __attribute__((externally_visible)) main() { t1(); }
48 $CC -Os -c -fwhole-program $TMPFILE2 -o $TMPFILE2o > /dev/null 2>&1
49 $CC -nostdlib -Os $TMPFILE1o $TMPFILE2o -o $TMPFILE3o > /dev/null 2>&1
51 echo " Working around non-global functions in -fwhole-program" > /dev/fd/2
54 # Test if "-combine" works
56 cat - > $TMPFILE1 <<EOF
57 struct ts { union { int u1; struct { int u2; }; }; };
58 void t1(struct ts *r);
60 $CC -c -fwhole-program -combine $TMPFILE1 $TMPFILE1 -o $TMPFILE1o > /dev/null 2>&1
62 #echo " Setting AVOIDCOMBINE=0" > /dev/fd/2
65 echo " Enabling AVOIDCOMBINE=1" > /dev/fd/2
69 rm -f $TMPFILE1 $TMPFILE1o $TMPFILE2 $TMPFILE2o $TMPFILE3o