Follow-up Comment #4, sr #110399 (project autoconf): For what it's worth, I ran into a similar problem on Fedora 33 with Gnulib, and found that it occurred because the Gnulib stdint module assumed that AC_INCLUDES_DEFAULT was being called and that it set ac_cv_header_inttypes_h and ac_cv_header_sys_types_h. This assumption is no longer true in Autoconf 2.70 (not sure whether that was intended). I fixed the problem by calling AC_CHECK_HEADERS_ONCE([inttypes.h]) before using ac_cv_header_inttypes_h, and by calling AC_CHECK_HEADERS_ONCE([sys/types.h]) before using ac_cv_header_sys_types_h; see:
https://lists.gnu.org/r/bug-gnulib/2020-12/msg00118.html I notice at least one similar issue in texlive, namely texk/dvipng/dvipng-src/configure.ac uses ac_cv_header_inttypes_h without invoking AC_CHECK_HEADERS([inttypes.h]). There may be other occurrences of the problem. I can't easily test the obvious fix for texk/dvipng/dvipng-src/configure.ac, as texlive doesn't build for me on Fedora 33 (with the old Autoconf, not that this matters when building without changing configure.ac etc.); the build fails as follows: checking for FT_Init_FreeType... no configure: error: libfreetype2 not found === configuring in gd failed make[2]: *** [Makefile:918: recurse] Error 1 make[2]: Leaving directory '/home/eggert/src/tug/source/Work/libs' make[1]: *** [Makefile:488: all-recursive] Error 1 make[1]: Leaving directory '/home/eggert/src/tug/source/Work/libs' make: *** [Makefile:582: all-recursive] Error 1 _______________________________________________________ Reply to this item at: <https://savannah.gnu.org/support/?110399> _______________________________________________ Message sent via Savannah https://savannah.gnu.org/
