[Bug libelf/26708] New: lcc compiler can't build elfutils because of nested functions

[Bug libelf/26708] New: lcc compiler can't build elfutils because of nested functions

[alexander at mezon dot ru]

https://sourceware.org/bugzilla/show_bug.cgi?id=26708

            Bug ID: 26708
           Summary: lcc compiler can't build elfutils because of nested
                    functions
           Product: elfutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libelf
          Assignee: unassigned at sourceware dot org
          Reporter: alexander at mezon dot ru
                CC: elfutils-devel at sourceware dot org
  Target Milestone: ---

i'm trying to compile elfutils-0.181 for MCST Elbrus8c platform
and got such issue

gcc -D_GNU_SOURCE -DHAVE_CONFIG_H -DLOCALEDIR='"/usr/share/locale"' -I. -I.. 
-I. -I. -I../lib -I.. -I. -I./../libelf -I./../libebl -I./../libdw
-I./../libdwelf -I./../debuginfod  -std=gnu99 -Wall -Wshadow -Wformat=2
-Wold-style-definition -Wstrict-prototypes -Wtrampolines -Wlogical-op
-Wduplicated-cond  -Wimplicit-fallthrough=5 -Werror -Wunused -Wextra
-Wstack-usage=262144   -D_FORTIFY_SOURCE=2 -Wno-error -O2 -g -march=elbrus-v4
-Os -fstack-protector-strong -Wno-error -c -o elf-from-memory.o
elf-from-memory.c
lcc: "elf-from-memory.c", line 234: error #65: expected a ";"
        {
        ^

lcc: "elf-from-memory.c", line 259: warning #12: parsing restarts here after
          previous syntax error
        goto libelf_error;
                         ^

lcc: "elf-from-memory.c", line 312: error #159: declaration is incompatible
          with previous "handle_segment" (declared at line 232)
        inline bool handle_segment (GElf_Addr vaddr, GElf_Off offset,
                    ^

lcc: "elf-from-memory.c", line 314: error #65: expected a ";"
        {
        ^

lcc: "elf-from-memory.c", line 330: warning #12: parsing restarts here after
          previous syntax error
            goto read_error;
                           ^

lcc: "elf-from-memory.c", line 58: warning #826: parameter "pagesize" was never
          referenced [-Wunused-parameter]
                        GElf_Xword pagesize,
                                   ^

lcc: "elf-from-memory.c", line 223: warning #3137: variable "found_base" was
          declared but never referenced [-Wunused-variable]
    bool found_base = false;
         ^

3 errors detected in the compilation of "elf-from-memory.c".


LCC does not supports nested functions
May you have any solution how to fix it?

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[Bug libelf/26708] lcc compiler can't build elfutils because of nested functions

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=26708

Mark Wielaard <mark at klomp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mark at klomp dot org

--- Comment #1 from Mark Wielaard <mark at klomp dot org> ---
(In reply to Alex Stefanov from comment #0)
> LCC does not supports nested functions
> May you have any solution how to fix it?

Use GCC to build or provide patches to use a different construct both compilers
understand.

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[Bug libelf/26708] lcc compiler can't build elfutils because of nested functions

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=26708

--- Comment #2 from Mark Wielaard <mark at klomp dot org> ---
Note that there should be a configure test to check that your compiler has all
capabilities to build elfutils:

# We use -std=gnu99 but have explicit checks for some language constructs
# and GNU extensions since some compilers claim GNU99 support, but don't
# really support all language extensions. In particular we need
# Mixed Declarations and Code
# https://gcc.gnu.org/onlinedocs/gcc/Mixed-Declarations.html
# Nested Functions
# https://gcc.gnu.org/onlinedocs/gcc/Nested-Functions.html
# Arrays of Variable Length
# https://gcc.gnu.org/onlinedocs/gcc/Variable-Length.html

Normally if your compiler doesn't support those language constructs the
"Checking for for gcc with GNU99 support..." test should fail. If it doesn't in
your case we might have to tighten up the configure check.

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[Bug libelf/26708] lcc compiler can't build elfutils because of nested functions

[alexander at mezon dot ru]

https://sourceware.org/bugzilla/show_bug.cgi?id=26708

--- Comment #3 from Alex Stefanov <alexander at mezon dot ru> ---
yes, i hacked such check with 
export ac_cv_c99=yes

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[Bug libelf/26708] lcc compiler can't build elfutils because of nested functions

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=26708

Mark Wielaard <mark at klomp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |NOTABUG

--- Comment #4 from Mark Wielaard <mark at klomp dot org> ---
(In reply to Alex Stefanov from comment #3)
> yes, i hacked such check with 
> export ac_cv_c99=yes

aha. ok, then I think the code works as intended and you should file a bug with
icc to support the needed compiler features.

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