Hi, Trying to compile guile on solaris sparcs (I'm using gcc 6.2) I get: CC guile-guile.o CCLD guile ./.libs/libguile-2.0.so: undefined reference to `mktime_internal' collect2: error: ld returned 1 exit status make[3]: *** [Makefile:2327: guile] Error 1 with guile-2.0.12.tar.gz and guile-2.0.11.tar.gz but works with guile-2.0.10.tar.gz Is there any configure flag I can use. Currently, I'm using: PKG_CONFIG_PATH=/usr/local/lib/pkgconfig ./configure; time make $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/sparc-sun-solaris2.10/6.2.0/lto-w rapper Target: sparc-sun-solaris2.10 Configured with: ../configure --with-gnu-as --with-as=/usr/local/bin/as --with-gnu-ld --with-ld=/usr/local/bin/ld --enable-shared --disable-lto --disable-nls --enable-languages=c,c++ Thread model: posix gcc version 6.2.0 (GCC)