toolchain/55594: Error creating shared library using gcc-7.5.0 on NetBSD 9.0_STABLE

[rajeev_v_pillai%yahoo.com@localhost]

>Number:         55594
>Category:       toolchain
>Synopsis:       Error creating shared library using gcc-7.5.0 on NetBSD 9.0_STABLE
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Aug 20 07:50:00 +0000 2020
>Originator:     Rajeev Pillai
>Release:        NetBSD 9.0_STABLE
>Organization:
>Environment:
NetBSD x202e.localdomain 9.0_STABLE NetBSD 9.0_STABLE (GENERIC) #0: Mon Aug 17 14:38:32 UTC 2020  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
>Description:
ld(1) from GCC 7.5.0 on NetBSD 9.0_STABLE (GENERIC) #0: Mon Aug 17 14:38:32 UTC 2020 fails to link a shared library (libncurses) with this error:

 ld: /usr/lib/crt0.o: in function `__start':
(.text+0x29): undefined reference to `__fini_array_start'
ld: /usr/lib/crt0.o: relocation R_X86_64_PC32 against undefined hidden symbol `__fini_array_start' can not be used when making a shared object
ld: final link failed: bad value
*** Error code 1

$ echo $CC
gcc

$ echo $CFLAGS
-Wall -O2 -flto -fpie -fstack-protector-all -fstack-protector-strong -march=native -pipe

$ echo $LDFLAGS
-pie -s

$ $CC --version
gcc (nb4 20200810) 7.5.0

>How-To-Repeat:
1. Download ncurses from https://invisible-mirror.net/archives/ncurses/current/ncurses-6.2-20200817.tgz

2. Untar, configure.
   ./configure --prefix=/opt/ncurses --with-shared

3. make
...OUTPUT ELIDED...
ld: /usr/lib/crt0.o: in function `__start':
(.text+0x29): undefined reference to `__fini_array_start'
ld: /usr/lib/crt0.o: relocation R_X86_64_PC32 against undefined hidden symbol `__fini_array_start' can not be used when making a shared object
ld: final link failed: bad value
*** Error code 1

>Fix: