1# $NetBSD: configure.ac,v 1.11 2023/07/20 15:16:44 lukem Exp $ 2# 3# Autoconf definition file for make. 4# 5# When you edit configure.ac: 6# 0. Create the tools version of autoconf: 7# cd ${SRCDIR} && build.sh -V MKMAINTAINERTOOLS=yes tools 8# (This might not work if you try it after editing configure.ac.) 9# 1. edit configure.ac 10# 2. Regenerate "configure" from "configure.ac": 11# cd ${SRCDIR}/tools/make && \ 12# ${TOOLDIR}/bin/nbmake-${MACHINE} -f Makefile.regen 13# (Please don't use a non-tools version of autoconf). 14# 3. Test that nbmake still builds 15# mv ${TOOLDIR}/nbmake ${TOOLDIR}/bin/nbmake.bak 16# cd ${SRCDIR} && build.sh makewrapper 17# 4. cvs commit files that you edited. 18# 5. Regen again, to pick up changed RCS IDs from the above commit: 19# cd ${SRCDIR}/tools/make && \ 20# ${TOOLDIR}/bin/nbmake-${MACHINE} -f Makefile.regen 21# 6. cvs commit files that were generated. 22# 23# 24 25AC_INIT([make], [noversion], [bin-bug-people@NetBSD.org]) 26AC_CONFIG_FILES([buildmake.sh]) 27 28m4_pattern_forbid([^AX_]) 29m4_pattern_forbid([^NB_]) 30 31AC_PATH_PROG([BSHELL], [sh]) 32if test x"$BSHELL" = x; then 33 AC_MSG_ERROR([sh must be somewhere on \$PATH, or BSHELL must be defined]) 34fi 35AC_DEFINE_UNQUOTED([DEFSHELL_CUSTOM], "${BSHELL}") 36 37# Make sure we have POSIX regex ability. 38AC_CHECK_HEADER([regex.h],, AC_MSG_ERROR([POSIX regex.h is required])) 39 40# If we don't have <poll.h>, we need to use select(2). 41AC_CHECK_HEADER([poll.h],, AC_DEFINE(USE_SELECT)) 42 43# regcomp() and regexec() are also names of functions in the old V8 44# regexp package. To avoid them, we need to find out who has regfree(). 45 46dnl # Cygwin: We *MUST* look at -lregex *before* the "no libs" condition. 47dnl # Thus AC_CHECK_LIB(regex...) comes first, and AC_SEARCHLIBS next. 48AC_CHECK_LIB([regex], [regfree]) 49AC_SEARCH_LIBS([regfree], [rx posix]) 50 51AC_CHECK_FUNCS([setenv strdup strerror strftime vsnprintf]) 52 53dnl NOWARNFLAGS: compiler flags to suppress unnecessary warnings: 54dnl -Wno-deprecated-declarations 55dnl 56NB_CHECK_CC_FLAG([-Wno-deprecated-declarations], [NOWARNFLAGS]) 57 58AC_OUTPUT() 59 60dnl Display results 61dnl 62AC_MSG_NOTICE([========== configure results for make ===========]) 63m4_foreach_w([NB_VAR], [CC CFLAGS CPPFLAGS DEFS LDFLAGS LIBS NOWARNFLAGS], [dnl 64AC_MSG_NOTICE(m4_format([%-32s],NB_VAR)[$NB_VAR]) 65]) 66AC_MSG_NOTICE([================================================]) 67