http://llvm.org/bugs/show_bug.cgi?id=4693
Summary: arm llvm-gcc build missing symbol ___aeabi_cdcmple but
__aeabi_cdcmple is present
Product: new-bugs
Version: unspecified
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Building llvm-gcc on armv7 linux natively makes it to stage two after
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20090803/083768.html
is applied. Once there, we get this problem in configure:
configure:2118: checking for C compiler default output file name
configure:2121: /home/nlewycky/llvm-gcc/build/./prev-gcc/xgcc
-B/home/nlewycky/llvm-gcc/build/./prev-gcc/
-B/home/nlewycky/llvm-gcc/install/armv7l-unknown-linux-gnueabi/bin/ -g -O2
conftest.c >&5
/home/nlewycky/llvm-gcc/build/./prev-gcc/cc1: symbol lookup error:
/home/nlewycky/llvm-gcc/build/./prev-gcc/libgcc_s.so.1: undefined symbol:
___aeabi_cdcmple
configure:2124: $? = 1
[snip trivial program]
Checking libgcc_s.so.1 with nm, we see:
U ___aeabi_cdcmple
U ___aeabi_cdrcmple
U ___aeabi_cfcmple
U ___aeabi_cfrcmple
U ___cmpdf2
U ___cmpsf2
[...]
0000316c T __aeabi_cdcmpeq
0000316c T __aeabi_cdcmple
0000315c T __aeabi_cdrcmple
00003878 T __aeabi_cfcmpeq
00003878 T __aeabi_cfcmple
00003870 T __aeabi_cfrcmple
0000329c T __aeabi_d2f
0000320c T __aeabi_d2iz
00005fa8 T __aeabi_d2lz
[many many more defined]
The difference is that the undefined symbols have three underscores while the
defined ones have two. How'd that happen?
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