This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by zlib configure 1.1.4, which was
generated by GNU Autoconf 2.69.  Invocation command line was

  $ /tmp/instance-0/output-1/build/gdb-10.2/zlib/configure --srcdir=../../zlib --cache-file=./config.cache --prefix=/usr --exec-prefix=/usr --sysconfdir=/etc --localstatedir=/var --disable-gtk-doc --disable-gtk-doc-html --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no --disable-dependency-tracking --enable-ipv6 --disable-nls --disable-static --enable-shared --without-uiout --disable-gdbtk --without-x --disable-sim --disable-binutils --disable-install-libbfd --disable-ld --disable-gas --disable-gprof --without-included-gettext --disable-werror --enable-static --without-mpfr --disable-gdb --without-curses --enable-gdbserver --disable-tui --without-python --with-expat --with-libexpat-prefix=/tmp/instance-0/output-1/host/riscv64-buildroot-linux-musl/sysroot/usr --with-lzma --with-liblzma-prefix=/tmp/instance-0/output-1/host/riscv64-buildroot-linux-musl/sysroot/usr --with-zlib --program-transform-name=s&^&& --disable-option-checking --build=x86_64-pc-linux-gnu --host=riscv64-buildroot-linux-musl --target=riscv64-buildroot-linux-musl --enable-host-shared

## --------- ##
## Platform. ##
## --------- ##

hostname = n4
uname -m = x86_64
uname -r = 5.4.0-80-generic
uname -s = Linux
uname -v = #90-Ubuntu SMP Fri Jul 9 22:49:44 UTC 2021

/usr/bin/uname -p = x86_64
/bin/uname -X     = unknown

/bin/arch              = x86_64
/usr/bin/arch -k       = unknown
/usr/convex/getsysinfo = unknown
/usr/bin/hostinfo      = unknown
/bin/machine           = unknown
/usr/bin/oslevel       = unknown
/bin/universe          = unknown

PATH: /tmp/instance-0/output-1/host/bin
PATH: /tmp/instance-0/output-1/host/sbin
PATH: /usr/local/sbin
PATH: /usr/local/bin
PATH: /usr/sbin
PATH: /usr/bin
PATH: /sbin
PATH: /bin
PATH: /snap/bin


## ----------- ##
## Core tests. ##
## ----------- ##

configure:2147: creating cache ./config.cache
configure:2301: checking build system type
configure:2315: result: x86_64-pc-linux-gnu
configure:2335: checking host system type
configure:2348: result: riscv64-buildroot-linux-musl
configure:2368: checking target system type
configure:2381: result: riscv64-buildroot-linux-musl
configure:2429: checking for a BSD-compatible install
configure:2497: result: /usr/bin/install -c
configure:2508: checking whether build environment is sane
configure:2563: result: yes
configure:2620: checking for riscv64-buildroot-linux-musl-strip
configure:2650: result: no
configure:2660: checking for strip
configure:2676: found /usr/bin/strip
configure:2687: result: strip
configure:2699: WARNING: using cross tools not prefixed with host triplet
configure:2712: checking for a thread-safe mkdir -p
configure:2751: result: /usr/bin/mkdir -p
configure:2758: checking for gawk
configure:2785: result: gawk
configure:2796: checking whether /usr/bin/make sets $(MAKE)
configure:2818: result: yes
configure:2847: checking whether /usr/bin/make supports nested variables
configure:2864: result: yes
configure:2992: checking whether to enable maintainer-specific portions of Makefiles
configure:3001: result: no
configure:3072: checking for riscv64-buildroot-linux-musl-gcc
configure:3099: result: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc
configure:3368: checking for C compiler version
configure:3377: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc --version >&5
riscv64-linux-gcc.br_real (Buildroot 2020.08-14-ge5a2a90) 10.2.0
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

configure:3388: $? = 0
configure:3377: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -v >&5
Using built-in specs.
COLLECT_GCC=/tmp/instance-0/output-1/host/opt/ext-toolchain/bin/riscv64-linux-gcc.br_real
COLLECT_LTO_WRAPPER=/tmp/instance-0/output-1/host/opt/ext-toolchain/bin/../libexec/gcc/riscv64-buildroot-linux-musl/10.2.0/lto-wrapper
Target: riscv64-buildroot-linux-musl
Configured with: ./configure --prefix=/opt/riscv64--musl--bleeding-edge-2020.08-1 --sysconfdir=/opt/riscv64--musl--bleeding-edge-2020.08-1/etc --enable-static --target=riscv64-buildroot-linux-musl --with-sysroot=/opt/riscv64--musl--bleeding-edge-2020.08-1/riscv64-buildroot-linux-musl/sysroot --enable-__cxa_atexit --with-gnu-ld --disable-libssp --disable-multilib --disable-decimal-float --with-gmp=/opt/riscv64--musl--bleeding-edge-2020.08-1 --with-mpc=/opt/riscv64--musl--bleeding-edge-2020.08-1 --with-mpfr=/opt/riscv64--musl--bleeding-edge-2020.08-1 --with-pkgversion='Buildroot 2020.08-14-ge5a2a90' --with-bugurl=http://bugs.buildroot.net/ --without-zstd --disable-libmpx --disable-libquadmath --disable-libquadmath-support --disable-libsanitizer --enable-tls --enable-threads --without-isl --without-cloog --with-arch=rv64imafd --with-abi=lp64 --enable-languages=c,c++,fortran --with-build-time-tools=/opt/riscv64--musl--bleeding-edge-2020.08-1/riscv64-buildroot-linux-musl/bin --enable-shared --disable-libgomp
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 10.2.0 (Buildroot 2020.08-14-ge5a2a90) 
COMPILER_PATH=/tmp/instance-0/output-1/host/opt/ext-toolchain/bin/../libexec/gcc/riscv64-buildroot-linux-musl/10.2.0/:/tmp/instance-0/output-1/host/opt/ext-toolchain/bin/../libexec/gcc/:/tmp/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/riscv64-buildroot-linux-musl/10.2.0/../../../../riscv64-buildroot-linux-musl/bin/
LIBRARY_PATH=/tmp/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/riscv64-buildroot-linux-musl/10.2.0/:/tmp/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/:/tmp/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/riscv64-buildroot-linux-musl/10.2.0/../../../../riscv64-buildroot-linux-musl/lib/:/tmp/instance-0/output-1/host/riscv64-buildroot-linux-musl/sysroot/lib/:/tmp/instance-0/output-1/host/riscv64-buildroot-linux-musl/sysroot/usr/lib/
... rest of stderr output deleted ...
configure:3388: $? = 1
configure:3377: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -V >&5
riscv64-linux-gcc.br_real: error: unrecognized command-line option '-V'
configure:3388: $? = 1
configure:3377: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -qversion >&5
riscv64-linux-gcc.br_real: error: unrecognized command-line option '-qversion'; did you mean '--version'?
configure:3388: $? = 1
configure:3404: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -o conftest -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0     conftest.c  >&5
configure:3407: $? = 0
configure:3436: checking whether the C compiler works
configure:3458: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0     conftest.c  >&5
configure:3462: $? = 0
configure:3510: result: yes
configure:3513: checking for C compiler default output file name
configure:3515: result: a.out
configure:3521: checking for suffix of executables
configure:3528: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -o conftest -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0     conftest.c  >&5
configure:3532: $? = 0
configure:3554: result: 
configure:3576: checking whether we are cross compiling
configure:3614: result: yes
configure:3620: checking for suffix of object files
configure:3642: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:3646: $? = 0
configure:3667: result: o
configure:3671: checking whether we are using the GNU C compiler
configure:3690: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:3690: $? = 0
configure:3699: result: yes
configure:3708: checking whether /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc accepts -g
configure:3728: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -g  conftest.c >&5
configure:3728: $? = 0
configure:3769: result: yes
configure:3786: checking for /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc option to accept ISO C89
configure:3849: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc  -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:3849: $? = 0
configure:3862: result: none needed
configure:3887: checking whether /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc understands -c and -o together
configure:3909: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c conftest.c -o conftest2.o
configure:3912: $? = 0
configure:3909: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c conftest.c -o conftest2.o
configure:3912: $? = 0
configure:3924: result: yes
configure:3952: checking for style of include used by /usr/bin/make
configure:3980: result: GNU
configure:4006: checking dependency style of /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc
configure:4117: result: none
configure:4182: checking how to print strings
configure:4209: result: printf
configure:4230: checking for a sed that does not truncate output
configure:4294: result: /usr/bin/sed
configure:4312: checking for grep that handles long lines and -e
configure:4370: result: /usr/bin/grep
configure:4375: checking for egrep
configure:4437: result: /usr/bin/grep -E
configure:4442: checking for fgrep
configure:4504: result: /usr/bin/grep -F
configure:4539: checking for ld used by /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc
configure:4606: result: /tmp/instance-0/output-1/host/bin/riscv64-linux-ld
configure:4613: checking if the linker (/tmp/instance-0/output-1/host/bin/riscv64-linux-ld) is GNU ld
configure:4628: result: yes
configure:4640: checking for BSD- or MS-compatible name lister (nm)
configure:4689: result: /tmp/instance-0/output-1/host/bin/riscv64-linux-nm
configure:4819: checking the name lister (/tmp/instance-0/output-1/host/bin/riscv64-linux-nm) interface
configure:4826: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:4829: /tmp/instance-0/output-1/host/bin/riscv64-linux-nm "conftest.o"
configure:4832: output
0000000000000000 B some_variable
configure:4833: result: BSD nm
configure:4836: checking whether ln -s works
configure:4840: result: yes
configure:4848: checking the maximum length of command line arguments
configure:4973: result: 1572864
configure:4990: checking whether the shell understands some XSI constructs
configure:4999: result: yes
configure:5003: checking whether the shell understands "+="
configure:5007: result: yes
configure:5042: checking for /tmp/instance-0/output-1/host/bin/riscv64-linux-ld option to reload object files
configure:5049: result: -r
configure:5078: checking for riscv64-buildroot-linux-musl-objdump
configure:5105: result: /tmp/instance-0/output-1/host/bin/riscv64-linux-objdump
configure:5177: checking how to recognize dependent libraries
configure:5378: result: pass_all
configure:5398: checking for riscv64-buildroot-linux-musl-ar
configure:5425: result: /tmp/instance-0/output-1/host/bin/riscv64-linux-ar
configure:5503: checking for riscv64-buildroot-linux-musl-strip
configure:5530: result: strip
configure:5602: checking for riscv64-buildroot-linux-musl-ranlib
configure:5629: result: /tmp/instance-0/output-1/host/bin/riscv64-linux-ranlib
configure:5771: checking command to parse /tmp/instance-0/output-1/host/bin/riscv64-linux-nm output from /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc object
configure:5889: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:5892: $? = 0
configure:5896: /tmp/instance-0/output-1/host/bin/riscv64-linux-nm conftest.o \| sed -n -e 's/^.*[ ]\([ABCDGIRSTW][ABCDGIRSTW]*\)[ ][ ]*\([_A-Za-z][_A-Za-z0-9]*\)$/\1 \2 \2/p' \> conftest.nm
configure:5899: $? = 0
configure:5953: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -o conftest -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0     conftest.c conftstm.o >&5
configure:5956: $? = 0
configure:5994: result: ok
configure:6852: checking how to run the C preprocessor
configure:6883: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -E  conftest.c
configure:6883: $? = 0
configure:6897: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -E  conftest.c
conftest.c:11:10: fatal error: ac_nonexistent.h: No such file or directory
   11 | #include <ac_nonexistent.h>
      |          ^~~~~~~~~~~~~~~~~~
compilation terminated.
configure:6897: $? = 1
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "zlib"
| #define PACKAGE_TARNAME "zlib"
| #define PACKAGE_VERSION "1.1.4"
| #define PACKAGE_STRING "zlib 1.1.4"
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE_URL ""
| #define PACKAGE "zlib"
| #define VERSION "1.1.4"
| /* end confdefs.h.  */
| #include <ac_nonexistent.h>
configure:6922: result: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -E
configure:6942: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -E  conftest.c
configure:6942: $? = 0
configure:6956: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -E  conftest.c
conftest.c:11:10: fatal error: ac_nonexistent.h: No such file or directory
   11 | #include <ac_nonexistent.h>
      |          ^~~~~~~~~~~~~~~~~~
compilation terminated.
configure:6956: $? = 1
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "zlib"
| #define PACKAGE_TARNAME "zlib"
| #define PACKAGE_VERSION "1.1.4"
| #define PACKAGE_STRING "zlib 1.1.4"
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE_URL ""
| #define PACKAGE "zlib"
| #define VERSION "1.1.4"
| /* end confdefs.h.  */
| #include <ac_nonexistent.h>
configure:6985: checking for ANSI C header files
configure:7005: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:7005: $? = 0
configure:7089: result: yes
configure:7102: checking for sys/types.h
configure:7102: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:7102: $? = 0
configure:7102: result: yes
configure:7102: checking for sys/stat.h
configure:7102: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:7102: $? = 0
configure:7102: result: yes
configure:7102: checking for stdlib.h
configure:7102: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:7102: $? = 0
configure:7102: result: yes
configure:7102: checking for string.h
configure:7102: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:7102: $? = 0
configure:7102: result: yes
configure:7102: checking for memory.h
configure:7102: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:7102: $? = 0
configure:7102: result: yes
configure:7102: checking for strings.h
configure:7102: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:7102: $? = 0
configure:7102: result: yes
configure:7102: checking for inttypes.h
configure:7102: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:7102: $? = 0
configure:7102: result: yes
configure:7102: checking for stdint.h
configure:7102: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:7102: $? = 0
configure:7102: result: yes
configure:7102: checking for unistd.h
configure:7102: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:7102: $? = 0
configure:7102: result: yes
configure:7116: checking for dlfcn.h
configure:7116: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:7116: $? = 0
configure:7116: result: yes
configure:7303: checking for objdir
configure:7318: result: .libs
configure:7589: checking if /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc supports -fno-rtti -fno-exceptions
configure:7607: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   -fno-rtti -fno-exceptions conftest.c >&5
cc1: warning: command-line option '-fno-rtti' is valid for C++/D/ObjC++ but not for C
configure:7611: $? = 0
configure:7624: result: no
configure:7644: checking for /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc option to produce PIC
configure:7930: result: -fPIC -DPIC
configure:7942: checking if /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc PIC flag -fPIC -DPIC works
configure:7960: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   -fPIC -DPIC -DPIC conftest.c >&5
configure:7964: $? = 0
configure:7977: result: yes
configure:8001: checking if /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc static flag -static works
configure:8029: result: yes
configure:8044: checking if /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc supports -c -o file.o
configure:8065: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   -o out/conftest2.o conftest.c >&5
configure:8069: $? = 0
configure:8091: result: yes
configure:8099: checking if /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc supports -c -o file.o
configure:8146: result: yes
configure:8179: checking whether the /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc linker (/tmp/instance-0/output-1/host/bin/riscv64-linux-ld) supports shared libraries
configure:9259: result: yes
configure:9296: checking whether -lc should be explicitly linked in
configure:9304: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:9307: $? = 0
configure:9322: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -shared  -fPIC -DPIC conftest.o  -v -Wl,-soname -Wl,conftest -o conftest 2\>\&1 \| /usr/bin/grep  -lc  \>/dev/null 2\>\&1
configure:9325: $? = 0
configure:9339: result: no
configure:9504: checking dynamic linker characteristics
configure:9958: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -o conftest -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0     -Wl,-rpath -Wl,/foo conftest.c  >&5
configure:9958: $? = 0
configure:10180: result: GNU/Linux ld.so
configure:10287: checking how to hardcode library paths into programs
configure:10312: result: immediate
configure:10867: checking whether stripping libraries is possible
configure:10872: result: yes
configure:10907: checking if libtool supports shared libraries
configure:10909: result: yes
configure:10912: checking whether to build shared libraries
configure:10933: result: yes
configure:10936: checking whether to build static libraries
configure:10940: result: yes
configure:8103: checking how to run the C preprocessor
configure:8173: result: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -E
configure:8193: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -E  conftest.c
configure:8193: $? = 0
configure:8207: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -E  conftest.c
conftest.c:23:10: fatal error: ac_nonexistent.h: No such file or directory
   23 | #include <ac_nonexistent.h>
      |          ^~~~~~~~~~~~~~~~~~
compilation terminated.
configure:8207: $? = 1
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "zlib"
| #define PACKAGE_TARNAME "zlib"
| #define PACKAGE_VERSION "1.1.4"
| #define PACKAGE_STRING "zlib 1.1.4"
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE_URL ""
| #define PACKAGE "zlib"
| #define VERSION "1.1.4"
| #define STDC_HEADERS 1
| #define HAVE_SYS_TYPES_H 1
| #define HAVE_SYS_STAT_H 1
| #define HAVE_STDLIB_H 1
| #define HAVE_STRING_H 1
| #define HAVE_MEMORY_H 1
| #define HAVE_STRINGS_H 1
| #define HAVE_INTTYPES_H 1
| #define HAVE_STDINT_H 1
| #define HAVE_UNISTD_H 1
| #define HAVE_DLFCN_H 1
| #define LT_OBJDIR ".libs/"
| /* end confdefs.h.  */
| #include <ac_nonexistent.h>
configure:8263: checking for stdlib.h
configure:8263: result: yes
configure:8263: checking for unistd.h
configure:8263: result: yes
configure:8263: checking for sys/param.h
configure:8263: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0   conftest.c >&5
configure:8263: $? = 0
configure:8263: result: yes
configure:8283: checking for getpagesize
configure:8283: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -o conftest -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0     conftest.c  >&5
configure:8283: $? = 0
configure:8283: result: yes
configure:8292: checking for working mmap
configure:8449: result: no
configure:8462: checking for memcpy
configure:8462: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -o conftest -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0     conftest.c  >&5
conftest.c:50:6: warning: conflicting types for built-in function 'memcpy'; expected 'void *(void *, const void *, long unsigned int)' [-Wbuiltin-declaration-mismatch]
   50 | char memcpy ();
      |      ^~~~~~
conftest.c:38:1: note: 'memcpy' is declared in header '<string.h>'
   37 | # include <limits.h>
   38 | #else
configure:8462: $? = 0
configure:8462: result: yes
configure:8462: checking for strerror
configure:8462: /tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -o conftest -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0     conftest.c  >&5
configure:8462: $? = 0
configure:8462: result: yes
configure:8527: checking for unistd.h
configure:8527: result: yes
configure:8641: updating cache ./config.cache
configure:8721: checking that generated files are newer than configure
configure:8727: result: done
configure:8758: creating ./config.status

## ---------------------- ##
## Running config.status. ##
## ---------------------- ##

This file was extended by zlib config.status 1.1.4, which was
generated by GNU Autoconf 2.69.  Invocation command line was

  CONFIG_FILES    = 
  CONFIG_HEADERS  = 
  CONFIG_LINKS    = 
  CONFIG_COMMANDS = 
  $ ./config.status 

on n4

config.status:1017: creating Makefile
config.status:1174: executing depfiles commands
config.status:1174: executing libtool commands

## ---------------- ##
## Cache variables. ##
## ---------------- ##

ac_cv_build=x86_64-pc-linux-gnu
ac_cv_c_compiler_gnu=yes
ac_cv_env_CPPFLAGS_set=
ac_cv_env_CPPFLAGS_value=
ac_cv_env_CPP_set=
ac_cv_env_CPP_value=
ac_cv_env_build_alias_set=set
ac_cv_env_build_alias_value=x86_64-pc-linux-gnu
ac_cv_env_host_alias_set=set
ac_cv_env_host_alias_value=riscv64-buildroot-linux-musl
ac_cv_env_target_alias_set=set
ac_cv_env_target_alias_value=riscv64-buildroot-linux-musl
ac_cv_func_getpagesize=yes
ac_cv_func_memcpy=yes
ac_cv_func_mmap_fixed_mapped=no
ac_cv_func_strerror=yes
ac_cv_header_dlfcn_h=yes
ac_cv_header_inttypes_h=yes
ac_cv_header_memory_h=yes
ac_cv_header_stdc=yes
ac_cv_header_stdint_h=yes
ac_cv_header_stdlib_h=yes
ac_cv_header_string_h=yes
ac_cv_header_strings_h=yes
ac_cv_header_sys_param_h=yes
ac_cv_header_sys_stat_h=yes
ac_cv_header_sys_types_h=yes
ac_cv_header_unistd_h=yes
ac_cv_host=riscv64-buildroot-linux-musl
ac_cv_objext=o
ac_cv_path_EGREP='/usr/bin/grep -E'
ac_cv_path_FGREP='/usr/bin/grep -F'
ac_cv_path_GREP=/usr/bin/grep
ac_cv_path_SED=/usr/bin/sed
ac_cv_path_mkdir=/usr/bin/mkdir
ac_cv_prog_AR=/tmp/instance-0/output-1/host/bin/riscv64-linux-ar
ac_cv_prog_AWK=gawk
ac_cv_prog_CC=/tmp/instance-0/output-1/host/bin/riscv64-linux-gcc
ac_cv_prog_CPP='/tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -E'
ac_cv_prog_OBJDUMP=/tmp/instance-0/output-1/host/bin/riscv64-linux-objdump
ac_cv_prog_RANLIB=/tmp/instance-0/output-1/host/bin/riscv64-linux-ranlib
ac_cv_prog_STRIP=strip
ac_cv_prog_ac_ct_STRIP=strip
ac_cv_prog_cc_c89=
ac_cv_prog_cc_g=yes
ac_cv_prog_make__usr_bin_make_set=yes
ac_cv_target=riscv64-buildroot-linux-musl
am_cv_CC_dependencies_compiler_type=none
am_cv_make_support_nested_variables=yes
am_cv_prog_cc_c_o=yes
gdb_cv_prfpregset_t_broken=no
gl_cv_func_gettimeofday_clobber=no
gl_cv_func_strerror_0_works=yes
gl_cv_func_working_strerror=yes
lt_cv_archive_cmds_need_lc=no
lt_cv_deplibs_check_method=pass_all
lt_cv_file_magic_cmd='$MAGIC_CMD'
lt_cv_file_magic_test_file=
lt_cv_ld_reload_flag=-r
lt_cv_nm_interface='BSD nm'
lt_cv_objdir=.libs
lt_cv_path_LD=/tmp/instance-0/output-1/host/bin/riscv64-linux-ld
lt_cv_path_NM=/tmp/instance-0/output-1/host/bin/riscv64-linux-nm
lt_cv_prog_compiler_c_o=yes
lt_cv_prog_compiler_pic_works=yes
lt_cv_prog_compiler_rtti_exceptions=no
lt_cv_prog_compiler_static_works=yes
lt_cv_prog_gnu_ld=yes
lt_cv_shlibpath_overrides_runpath=no
lt_cv_sys_global_symbol_pipe='sed -n -e '\''s/^.*[	 ]\([ABCDGIRSTW][ABCDGIRSTW]*\)[	 ][	 ]*\([_A-Za-z][_A-Za-z0-9]*\)$/\1 \2 \2/p'\'''
lt_cv_sys_global_symbol_to_c_name_address='sed -n -e '\''s/^: \([^ ]*\) $/  {\"\1\", (void *) 0},/p'\'' -e '\''s/^[ABCDGIRSTW]* \([^ ]*\) \([^ ]*\)$/  {"\2", (void *) \&\2},/p'\'''
lt_cv_sys_global_symbol_to_c_name_address_lib_prefix='sed -n -e '\''s/^: \([^ ]*\) $/  {\"\1\", (void *) 0},/p'\'' -e '\''s/^[ABCDGIRSTW]* \([^ ]*\) \(lib[^ ]*\)$/  {"\2", (void *) \&\2},/p'\'' -e '\''s/^[ABCDGIRSTW]* \([^ ]*\) \([^ ]*\)$/  {"lib\2", (void *) \&\2},/p'\'''
lt_cv_sys_global_symbol_to_cdecl='sed -n -e '\''s/^T .* \(.*\)$/extern int \1();/p'\'' -e '\''s/^[ABCDGIRSTW]* .* \(.*\)$/extern char \1;/p'\'''
lt_cv_sys_max_cmd_len=1572864

## ----------------- ##
## Output variables. ##
## ----------------- ##

ACLOCAL='${SHELL} /tmp/instance-0/output-1/build/gdb-10.2/missing aclocal-1.15'
AMDEPBACKSLASH=''
AMDEP_FALSE=''
AMDEP_TRUE='#'
AMTAR='$${TAR-tar}'
AM_BACKSLASH='\'
AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
AM_DEFAULT_VERBOSITY='1'
AM_V='$(V)'
AR='/tmp/instance-0/output-1/host/bin/riscv64-linux-ar'
AUTOCONF='${SHELL} /tmp/instance-0/output-1/build/gdb-10.2/missing autoconf'
AUTOHEADER='${SHELL} /tmp/instance-0/output-1/build/gdb-10.2/missing autoheader'
AUTOMAKE='${SHELL} /tmp/instance-0/output-1/build/gdb-10.2/missing automake-1.15'
AWK='gawk'
CC='/tmp/instance-0/output-1/host/bin/riscv64-linux-gcc'
CCDEPMODE='depmode=none'
CFLAGS='-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os -g0 '
COMPPATH='.'
CPP='/tmp/instance-0/output-1/host/bin/riscv64-linux-gcc -E'
CPPFLAGS=''
CYGPATH_W='echo'
DEFS='-DPACKAGE_NAME=\"zlib\" -DPACKAGE_TARNAME=\"zlib\" -DPACKAGE_VERSION=\"1.1.4\" -DPACKAGE_STRING=\"zlib\ 1.1.4\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"zlib\" -DVERSION=\"1.1.4\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DHAVE_STDLIB_H=1 -DHAVE_UNISTD_H=1 -DHAVE_SYS_PARAM_H=1 -DHAVE_GETPAGESIZE=1 -DHAVE_MEMCPY=1 -DHAVE_STRERROR=1 -DHAVE_UNISTD_H=1'
DEPDIR='.deps'
DSYMUTIL=''
DUMPBIN=''
ECHO_C=''
ECHO_N='-n'
ECHO_T=''
EGREP='/usr/bin/grep -E'
EXEEXT=''
FGREP='/usr/bin/grep -F'
GREP='/usr/bin/grep'
INSTALL_DATA='/usr/bin/install -c -m 644'
INSTALL_PROGRAM='/usr/bin/install -c'
INSTALL_SCRIPT='/usr/bin/install -c'
INSTALL_STRIP_PROGRAM='$(install_sh) -c -s'
LD='/tmp/instance-0/output-1/host/bin/riscv64-linux-ld'
LDFLAGS=' '
LIBOBJS=''
LIBS=''
LIBTOOL='$(SHELL) $(top_builddir)/libtool'
LIPO=''
LN_S='ln -s'
LTLIBOBJS=''
MAINT='#'
MAINTAINER_MODE_FALSE=''
MAINTAINER_MODE_TRUE='#'
MAKEINFO='true --split-size=5000000'
MKDIR_P='/usr/bin/mkdir -p'
NM='/tmp/instance-0/output-1/host/bin/riscv64-linux-nm'
NMEDIT=''
OBJDUMP='/tmp/instance-0/output-1/host/bin/riscv64-linux-objdump'
OBJEXT='o'
OTOOL64=''
OTOOL=''
PACKAGE='zlib'
PACKAGE_BUGREPORT=''
PACKAGE_NAME='zlib'
PACKAGE_STRING='zlib 1.1.4'
PACKAGE_TARNAME='zlib'
PACKAGE_URL=''
PACKAGE_VERSION='1.1.4'
PATH_SEPARATOR=':'
PICFLAG='-fPIC'
RANLIB='/tmp/instance-0/output-1/host/bin/riscv64-linux-ranlib'
SED='/usr/bin/sed'
SET_MAKE=''
SHELL='/bin/bash'
STRIP='strip'
TARGET_LIBRARY_FALSE=''
TARGET_LIBRARY_TRUE='#'
VERSION='1.1.4'
ac_ct_CC=''
ac_ct_DUMPBIN=''
am__EXEEXT_FALSE=''
am__EXEEXT_TRUE='#'
am__fastdepCC_FALSE=''
am__fastdepCC_TRUE='#'
am__include='include'
am__isrc=' -I$(srcdir)'
am__leading_dot='.'
am__nodep=''
am__quote=''
am__tar='$${TAR-tar} chof - "$$tardir"'
am__untar='$${TAR-tar} xf -'
bindir='${exec_prefix}/bin'
build='x86_64-pc-linux-gnu'
build_alias='x86_64-pc-linux-gnu'
build_cpu='x86_64'
build_os='linux-gnu'
build_vendor='pc'
datadir='${datarootdir}'
datarootdir='${prefix}/share'
docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
dvidir='${docdir}'
exec_prefix='/usr'
host='riscv64-buildroot-linux-musl'
host_alias='riscv64-buildroot-linux-musl'
host_cpu='riscv64'
host_os='linux-musl'
host_vendor='buildroot'
htmldir='${docdir}'
includedir='${prefix}/include'
infodir='${datarootdir}/info'
install_sh='${SHELL} /tmp/instance-0/output-1/build/gdb-10.2/install-sh'
libdir='${exec_prefix}/lib'
libexecdir='${exec_prefix}/libexec'
localedir='${datarootdir}/locale'
localstatedir='/var'
mandir='${datarootdir}/man'
mkdir_p='$(MKDIR_P)'
mkinstalldirs='/tmp/instance-0/output-1/build/gdb-10.2/mkinstalldirs'
multi_basedir=''
oldincludedir='/usr/include'
pdfdir='${docdir}'
prefix='/usr'
program_transform_name='s&^&&'
psdir='${docdir}'
sbindir='${exec_prefix}/sbin'
sharedstatedir='${prefix}/com'
sysconfdir='/etc'
target='riscv64-buildroot-linux-musl'
target_alias='riscv64-buildroot-linux-musl'
target_all='libzgcj.la'
target_cpu='riscv64'
target_os='linux-musl'
target_vendor='buildroot'
toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
toolexeclibdir='$(libdir)'

## ----------- ##
## confdefs.h. ##
## ----------- ##

/* confdefs.h */
#define PACKAGE_NAME "zlib"
#define PACKAGE_TARNAME "zlib"
#define PACKAGE_VERSION "1.1.4"
#define PACKAGE_STRING "zlib 1.1.4"
#define PACKAGE_BUGREPORT ""
#define PACKAGE_URL ""
#define PACKAGE "zlib"
#define VERSION "1.1.4"
#define STDC_HEADERS 1
#define HAVE_SYS_TYPES_H 1
#define HAVE_SYS_STAT_H 1
#define HAVE_STDLIB_H 1
#define HAVE_STRING_H 1
#define HAVE_MEMORY_H 1
#define HAVE_STRINGS_H 1
#define HAVE_INTTYPES_H 1
#define HAVE_STDINT_H 1
#define HAVE_UNISTD_H 1
#define HAVE_DLFCN_H 1
#define LT_OBJDIR ".libs/"
#define HAVE_STDLIB_H 1
#define HAVE_UNISTD_H 1
#define HAVE_SYS_PARAM_H 1
#define HAVE_GETPAGESIZE 1
#define HAVE_MEMCPY 1
#define HAVE_STRERROR 1
#define HAVE_UNISTD_H 1

configure: exit 0