[Bug c/56371] New: When building GCC from combined tree, configure is making wrong assumptions about 'gas' and 'ld'

[k2k at narod dot ru]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56371



             Bug #: 56371

           Summary: When building GCC from combined tree, configure is

                    making wrong assumptions about 'gas' and 'ld'

    Classification: Unclassified

           Product: gcc

           Version: 4.7.2

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: c

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: k...@narod.ru

              Host: i686-pc-mingw32

            Target: i686-w64-mingw32, x86_64-w64-mingw32, i686-pc-mingw32

             Build: i686-pc-mingw32





When building from combined source tree, 'configure' detect binutils version

and make some assumptions about gas based only on version, without making real

tests.



Quotes from 'config.log' with wrong assumptions (for combined tree):



configure:21949: checking assembler for .literal16

configure:21976: result: yes

.....

configure:22101: checking assembler for .nsubspa comdat

configure:22129: result: yes

.....

configure:22274: checking linker for .hidden support

configure:22338: result: no

.....

configure:22563: checking assembler for .sleb128 and .uleb128

configure:22611: result: no

.....

configure:23630: checking assembler for thread-local storage support

configure:23657: result: yes

.....

configure:25977: checking assembler for dwarf2 debug_line support

configure:26009: result: no

.....

configure:26052: checking assembler for --gdwarf2 option

configure:26080: result: no

configure:26088: checking assembler for --gstabs option

configure:26127: result: no

.....

configure:26334: checking linker position independent executable support

configure:26353: result: no

.....

configure:26490: checking linker --as-needed support

configure:26509: result: no





Results of configure with pure GCC tree (binutils was build before GCC):



configure:21949: checking assembler for .literal16

configure:21962: /mingw/mingw32/bin/as    -o conftest.o conftest.s >&5

conftest.s: Assembler messages:

conftest.s:1: Error: unknown pseudo-op: `.literal16'

configure:21965: $? = 1

configure: failed program was

.literal16

configure:21976: result: no

.....

configure:22101: checking assembler for .nsubspa comdat

configure:22115: /mingw/mingw32/bin/as    -o conftest.o conftest.s >&5

conftest.s: Assembler messages:

conftest.s:2: Error: unknown pseudo-op: `.nsubspa'

configure:22118: $? = 1

configure: failed program was

    .SPACE $TEXT$

    .NSUBSPA $CODE$,COMDAT

configure:22129: result: no

.....

configure:22274: checking linker for .hidden support

configure:22338: result: yes

.....

configure:22563: checking assembler for .sleb128 and .uleb128

configure:22582: /mingw/mingw32/bin/as    -o conftest.o conftest.s >&5

configure:22585: $? = 0

configure:22611: result: yes

.....

configure:23630: checking assembler for thread-local storage support

configure:23643: /mingw/mingw32/bin/as   --fatal-warnings -o conftest.o

conftest.s >&5

conftest.s: Assembler messages:

conftest.s:2: Error: junk at end of line, first unrecognized character is `"'

configure:23646: $? = 1

configure: failed program was



    .section ".tdata","awT",@progbits

foo:    .long    25

    .text

    movl    %gs:0, %eax

    leal    foo@tlsgd(,%ebx,1), %eax

    leal    foo@tlsldm(%ebx), %eax

    leal    foo@dtpoff(%eax), %edx

    movl    foo@gottpoff(%ebx), %eax

    subl    foo@gottpoff(%ebx), %eax

    addl    foo@gotntpoff(%ebx), %eax

    movl    foo@indntpoff, %eax

    movl    $foo@tpoff, %eax

    subl    $foo@tpoff, %eax

    leal    foo@ntpoff(%ecx), %eax

configure:23657: result: no

.....

configure:25977: checking assembler for dwarf2 debug_line support

configure:25991: /mingw/mingw32/bin/as    -o conftest.o conftest.s >&5

configure:25994: $? = 0

configure:26009: result: yes

.....

configure:26052: checking assembler for --gdwarf2 option

configure:26066: /mingw/mingw32/bin/as   --gdwarf2 -o conftest.o conftest.s >&5

configure:26069: $? = 0

configure:26080: result: yes

configure:26088: checking assembler for --gstabs option

configure:26102: /mingw/mingw32/bin/as   --gstabs -o conftest.o conftest.s >&5

configure:26105: $? = 0

configure:26112: /mingw/mingw32/bin/as --gstabs -o conftest.o conftest.s 2>&1 |

grep -i warning > /dev/null

configure:26115: $? = 1

configure:26127: result: yes

.....

configure:26334: checking linker position independent executable support

configure:26353: result: yes

.....

configure:26490: checking linker --as-needed support

configure:26509: result: yes