http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47241
Summary: lto not work on mingw32, reporting 'ld.exe: could not
unlink output file'
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: cool...@qq.com
gcc 4.6.0 snapshot 20110108
compile following code with 'gcc-4 -v -flto test.c'
#include <stdio.h>
int main()
{
printf("Test\n");
return 0;
}
and get the following error message:
Using built-in specs.
COLLECT_GCC=D:\MinGW\bin\gcc-4.exe
COLLECT_LTO_WRAPPER=d:/mingw/bin/../libexec/gcc/i686-pc-mingw32/4.6.0/lto-wrapper.exe
Target: i686-pc-mingw32
Configured with: ../gcc-4.6-20110108/configure --prefix=/gcc4
--program-suffix=-4 --with-gnu-as --with-gnu-ld --enable-threads
--disable-shared --disable-win32-registry --disable-werror --disable-nls
--disable-libquadmath --disable-bootstrap
Thread model: win32
gcc version 4.6.0 20110108 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-v' '-flto' '-mtune=generic' '-march=pentiumpro'
d:/mingw/bin/../libexec/gcc/i686-pc-mingw32/4.6.0/cc1.exe -quiet -v -iprefix
d:\mingw\bin\../lib/gcc/i686-pc-mingw32/4.6.0/ test.c -quiet -dumpbase test.c
-mtune=generic -march=pentiumpro -auxbase test -version -flto -o
C:\Users\coolypf\AppData\Local\Temp\ccZ46Rlb.s
GNU C (GCC) version 4.6.0 20110108 (experimental) (i686-pc-mingw32)
compiled by GNU C version 4.6.0 20110101 (experimental), GMP version 5.0.1,
MPFR version 3.0.0, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory
"d:\mingw\bin\../lib/gcc/i686-pc-mingw32/4.6.0/../../../../i686-pc-mingw32/include"
ignoring duplicate directory
"d:/mingw/lib/gcc/../../lib/gcc/i686-pc-mingw32/4.6.0/include"
ignoring nonexistent directory "D:/MinGW/gcc4/include"
ignoring nonexistent directory "/gcc4/include"
ignoring duplicate directory
"d:/mingw/lib/gcc/../../lib/gcc/i686-pc-mingw32/4.6.0/include-fixed"
ignoring nonexistent directory
"d:/mingw/lib/gcc/../../lib/gcc/i686-pc-mingw32/4.6.0/../../../../i686-pc-mingw32/include"
ignoring duplicate directory "/mingw/include"
#include "..." search starts here:
#include <...> search starts here:
d:\mingw\bin\../lib/gcc/i686-pc-mingw32/4.6.0/include
d:\mingw\bin\../lib/gcc/i686-pc-mingw32/4.6.0/../../../../include
d:\mingw\bin\../lib/gcc/i686-pc-mingw32/4.6.0/include-fixed
End of search list.
GNU C (GCC) version 4.6.0 20110108 (experimental) (i686-pc-mingw32)
compiled by GNU C version 4.6.0 20110101 (experimental), GMP version 5.0.1,
MPFR version 3.0.0, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: c752079cf4e558b53a88eee0a5828d49
COLLECT_GCC_OPTIONS='-v' '-flto' '-mtune=generic' '-march=pentiumpro'
as -v -o C:\Users\coolypf\AppData\Local\Temp\cc0lkcdl.o
C:\Users\coolypf\AppData\Local\Temp\ccZ46Rlb.s
GNU assembler version 2.21.51 (i686-pc-mingw32) using BFD version (GNU
Binutils) 2.21.51.20110109
COMPILER_PATH=d:/mingw/bin/../libexec/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/bin/../libexec/gcc/
LIBRARY_PATH=d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/bin/../lib/gcc/;d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/../../../;/mingw/lib/
COLLECT_GCC_OPTIONS='-v' '-flto' '-mtune=generic' '-march=pentiumpro'
d:/mingw/bin/../libexec/gcc/i686-pc-mingw32/4.6.0/collect2.exe -plugin
d:/mingw/bin/../libexec/gcc/i686-pc-mingw32/4.6.0/liblto_plugin-0.dll
-plugin-opt=d:/mingw/bin/../libexec/gcc/i686-pc-mingw32/4.6.0/lto-wrapper.exe
-plugin-opt=-fresolution=C:\Users\coolypf\AppData\Local\Temp\ccAKIfIl.res
-plugin-opt=-pass-through=-lmingw32 -plugin-opt=-pass-through=-lgcc
-plugin-opt=-pass-through=-lmoldname -plugin-opt=-pass-through=-lmingwex
-plugin-opt=-pass-through=-lmsvcrt -plugin-opt=-pass-through=-ladvapi32
-plugin-opt=-pass-through=-lshell32 -plugin-opt=-pass-through=-luser32
-plugin-opt=-pass-through=-lkernel32 -plugin-opt=-pass-through=-lmingw32
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lmoldname
-plugin-opt=-pass-through=-lmingwex -plugin-opt=-pass-through=-lmsvcrt -flto
-Bdynamic d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/../../../crt2.o
d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/crtbegin.o
-Ld:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0 -Ld:/mingw/bin/../lib/gcc
-Ld:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/../../.. -L/mingw/lib
C:\Users\coolypf\AppData\Local\Temp\cc0lkcdl.o -lmingw32 -lgcc -lmoldname
-lmingwex -lmsvcrt -ladvapi32 -lshell32 -luser32 -lkernel32 -lmingw32 -lgcc
-lmoldname -lmingwex -lmsvcrt
d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/crtend.o
D:\MinGW\bin\gcc-4.exe @C:\Users\coolypf\AppData\Local\Temp\ccOgvLTl.args
Using built-in specs.
COLLECT_GCC=D:\MinGW\bin\gcc-4.exe
COLLECT_LTO_WRAPPER=d:/mingw/lib/gcc/../../libexec/gcc/i686-pc-mingw32/4.6.0/lto-wrapper.exe
Target: i686-pc-mingw32
Configured with: ../gcc-4.6-20110108/configure --prefix=/gcc4
--program-suffix=-4 --with-gnu-as --with-gnu-ld --enable-threads
--disable-shared --disable-win32-registry --disable-werror --disable-nls
--disable-libquadmath --disable-bootstrap
Thread model: win32
gcc version 4.6.0 20110108 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-c' '-v' '-mtune=generic' '-march=pentiumpro'
'-fltrans-output-list=C:\Users\coolypf\AppData\Local\Temp\ccuIPX1f.ltrans.out'
'-fwpa' '-fresolution=C:\Users\coolypf\AppData\Local\Temp\ccAKIfIl.res'
d:/mingw/lib/gcc/../../libexec/gcc/i686-pc-mingw32/4.6.0/lto1.exe -quiet
-dumpbase cc0lkcdl.o -mtune=generic -march=pentiumpro -auxbase cc0lkcdl
-version
-fltrans-output-list=C:\Users\coolypf\AppData\Local\Temp\ccuIPX1f.ltrans.out
-fwpa -fresolution=C:\Users\coolypf\AppData\Local\Temp\ccAKIfIl.res
@C:\Users\coolypf\AppData\Local\Temp\cc2biTYe
GNU GIMPLE (GCC) version 4.6.0 20110108 (experimental) (i686-pc-mingw32)
compiled by GNU C version 4.6.0 20110101 (experimental), GMP version 5.0.1,
MPFR version 3.0.0, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU GIMPLE (GCC) version 4.6.0 20110108 (experimental) (i686-pc-mingw32)
compiled by GNU C version 4.6.0 20110101 (experimental), GMP version 5.0.1,
MPFR version 3.0.0, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
COMPILER_PATH=d:/mingw/lib/gcc/../../libexec/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/lib/gcc/../../libexec/gcc/;d:/mingw/bin/../libexec/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/bin/../libexec/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/bin/../libexec/gcc/
LIBRARY_PATH=d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/bin/../lib/gcc/;d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/bin/../lib/gcc/;d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/../../../;/mingw/lib/;d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/../../../;/mingw/lib/
COLLECT_GCC_OPTIONS='-c' '-v' '-mtune=generic' '-march=pentiumpro'
'-fltrans-output-list=C:\Users\coolypf\AppData\Local\Temp\ccuIPX1f.ltrans.out'
'-fwpa' '-fresolution=C:\Users\coolypf\AppData\Local\Temp\ccAKIfIl.res'
D:\MinGW\bin\gcc-4.exe @C:\Users\coolypf\AppData\Local\Temp\ccK0v2Xy.args
Using built-in specs.
COLLECT_GCC=D:\MinGW\bin\gcc-4.exe
COLLECT_LTO_WRAPPER=d:/mingw/lib/gcc/../../libexec/gcc/i686-pc-mingw32/4.6.0/lto-wrapper.exe
Target: i686-pc-mingw32
Configured with: ../gcc-4.6-20110108/configure --prefix=/gcc4
--program-suffix=-4 --with-gnu-as --with-gnu-ld --enable-threads
--disable-shared --disable-win32-registry --disable-werror --disable-nls
--disable-libquadmath --disable-bootstrap
Thread model: win32
gcc version 4.6.0 20110108 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-c' '-v' '-mtune=generic' '-march=pentiumpro' '-fltrans'
'-o' 'C:\Users\coolypf\AppData\Local\Temp\ccuIPX1f.ltrans0.ltrans.o'
d:/mingw/lib/gcc/../../libexec/gcc/i686-pc-mingw32/4.6.0/lto1.exe -quiet
-dumpbase ccuIPX1f.ltrans0.o -mtune=generic -march=pentiumpro -auxbase-strip
C:\Users\coolypf\AppData\Local\Temp\ccuIPX1f.ltrans0.ltrans.o -version -fltrans
@C:\Users\coolypf\AppData\Local\Temp\cc0meYVk -o
C:\Users\coolypf\AppData\Local\Temp\ccQziMHv.s
GNU GIMPLE (GCC) version 4.6.0 20110108 (experimental) (i686-pc-mingw32)
compiled by GNU C version 4.6.0 20110101 (experimental), GMP version 5.0.1,
MPFR version 3.0.0, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU GIMPLE (GCC) version 4.6.0 20110108 (experimental) (i686-pc-mingw32)
compiled by GNU C version 4.6.0 20110101 (experimental), GMP version 5.0.1,
MPFR version 3.0.0, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
COLLECT_GCC_OPTIONS='-c' '-v' '-mtune=generic' '-march=pentiumpro' '-fltrans'
'-o' 'C:\Users\coolypf\AppData\Local\Temp\ccuIPX1f.ltrans0.ltrans.o'
as -v -o C:\Users\coolypf\AppData\Local\Temp\ccuIPX1f.ltrans0.ltrans.o
C:\Users\coolypf\AppData\Local\Temp\ccQziMHv.s
GNU assembler version 2.21.51 (i686-pc-mingw32) using BFD version (GNU
Binutils) 2.21.51.20110109
COMPILER_PATH=d:/mingw/lib/gcc/../../libexec/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/lib/gcc/../../libexec/gcc/;d:/mingw/bin/../libexec/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/bin/../libexec/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/bin/../libexec/gcc/
LIBRARY_PATH=d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/bin/../lib/gcc/;d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/;d:/mingw/bin/../lib/gcc/;d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/../../../;/mingw/lib/;d:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.6.0/../../../;/mingw/lib/
COLLECT_GCC_OPTIONS='-c' '-v' '-mtune=generic' '-march=pentiumpro' '-fltrans'
'-o' 'C:\Users\coolypf\AppData\Local\Temp\ccuIPX1f.ltrans0.ltrans.o'
D:\MinGW\bin/ld.exe: could not unlink output file
collect2: ld returned 1 exit status
gcc 4.6.0 snapshot 20110101 works fine with '-flto'
so changes between 1/1 and 1/8 cause lto failure on mingw32
