* Package:    net-irc/muh-2.2a-r2:0
 * Repository: gentoo
 * USE:        abi_x86_64 amd64 elibc_glibc ipv6 kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox

>>> Unpacking source...
>>> Unpacking muh-2.2a.tar.gz to /var/tmp/portage/net-irc/muh-2.2a-r2/work
>>> Source unpacked in /var/tmp/portage/net-irc/muh-2.2a-r2/work
>>> Preparing source in /var/tmp/portage/net-irc/muh-2.2a-r2/work/muh-2.2a ...
>>> Source prepared.
 * Clang 16 testing: this build is using a /etc/portage/bashrc hook (2022-11-24T21:47)!
 * Clang 16 testing: see https://wiki.gentoo.org/wiki/Modern_C_porting for more info.
>>> Configuring source in /var/tmp/portage/net-irc/muh-2.2a-r2/work/muh-2.2a ...
./configure --prefix=/usr --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --libdir=/usr/lib64 --datadir=/usr/share/muh --enable-ipv6
configure: loading site script /usr/share/config.site
checking for a BSD-compatible install... /usr/lib/portage/python3.10/ebuild-helpers/xattr/install -c
checking whether build environment is sane... yes
checking whether make sets ${MAKE}... yes
checking for working aclocal... found
checking for working autoconf... found
checking for working automake... found
checking for working autoheader... found
checking for working makeinfo... found
checking for x86_64-pc-linux-gnu-gcc... clang
checking for C compiler default output... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether clang accepts -g... yes
checking whether make sets ${MAKE}... (cached) yes
checking for a BSD-compatible install... /usr/lib/portage/python3.10/ebuild-helpers/xattr/install -c
checking for bison... bison -y
checking for flex... flex
checking for flex... (cached) flex
checking for yywrap in -lfl... yes
checking lex output file root... lex.yy
checking whether yytext is a pointer... yes
checking for gethostbyname2... yes
checking for library containing gethostbyname... none required
checking for library containing gethostbyaddr... none required
checking for library containing socket... none required
checking for library containing hstrerror... none required
checking for library containing crypt... -lcrypt
checking how to run the C preprocessor... egrep: warning: egrep is obsolescent; using /bin/grep -E
egrep: warning: egrep is obsolescent; using /bin/grep -E
clang -E
egrep: warning: egrep is obsolescent; using /bin/grep -E
egrep: warning: egrep is obsolescent; using /bin/grep -E
checking for ANSI C header files... egrep: warning: egrep is obsolescent; using /bin/grep -E
no
configure: error: ansi-c headers are required!

!!! Please attach the following file when seeking support:
!!! /var/tmp/portage/net-irc/muh-2.2a-r2/work/muh-2.2a/config.log
 * ERROR: net-irc/muh-2.2a-r2::gentoo failed (configure phase):
 *   econf failed
 * 
 * Call stack:
 *               ebuild.sh, line 136:  Called src_configure
 *             environment, line 714:  Called econf '--datadir=/usr/share/muh' '--enable-ipv6'
 *        phase-helpers.sh, line 730:  Called __helpers_die 'econf failed'
 *   isolated-functions.sh, line 112:  Called die
 * The specific snippet of code:
 *   		die "$@"
 * 
 * If you need support, post the output of `emerge --info '=net-irc/muh-2.2a-r2::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=net-irc/muh-2.2a-r2::gentoo'`.
 * The complete build log is located at '/var/log/portage/net-irc:muh-2.2a-r2:20221202-000936.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/net-irc/muh-2.2a-r2/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/net-irc/muh-2.2a-r2/temp/environment'.
 * Working directory: '/var/tmp/portage/net-irc/muh-2.2a-r2/work/muh-2.2a'
 * S: '/var/tmp/portage/net-irc/muh-2.2a-r2/work/muh-2.2a'