X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=test%2Faclocal.m4;h=813de2d3751cffa1d2bac3e0df136fbb974c885e;hp=208b97cc4c63d242af61de21061bb5aae2dcd085;hb=cdaf29481becd3e1c21baa574ac1ab88ea5f3d38;hpb=df51c7005b77c6dcc78565d8cc87f8f68a8525c2 diff --git a/test/aclocal.m4 b/test/aclocal.m4 index 208b97cc..813de2d3 100644 --- a/test/aclocal.m4 +++ b/test/aclocal.m4 @@ -26,7 +26,7 @@ dnl sale, use or other dealings in this Software without prior written * dnl authorization. * dnl*************************************************************************** dnl -dnl $Id: aclocal.m4,v 1.160 2018/08/18 20:39:24 tom Exp $ +dnl $Id: aclocal.m4,v 1.163 2019/01/01 01:46:17 tom Exp $ dnl dnl Author: Thomas E. Dickey dnl @@ -1767,7 +1767,7 @@ if test $cf_cv_getopt_header = getopt.h ; then fi ])dnl dnl --------------------------------------------------------------------------- -dnl CF_GNU_SOURCE version: 9 updated: 2018/06/20 20:23:13 +dnl CF_GNU_SOURCE version: 10 updated: 2018/12/10 20:09:41 dnl ------------- dnl Check if we must define _GNU_SOURCE to get a reasonable value for dnl _XOPEN_SOURCE, upon which many POSIX definitions depend. This is a defect @@ -1786,6 +1786,8 @@ AC_CACHE_CHECK(if this is the GNU C library,cf_cv_gnu_library,[ AC_TRY_COMPILE([#include ],[ #if __GLIBC__ > 0 && __GLIBC_MINOR__ >= 0 return 0; + #elif __NEWLIB__ > 0 && __NEWLIB_MINOR__ >= 0 + return 0; #else # error not GNU C library #endif], @@ -1796,13 +1798,16 @@ AC_TRY_COMPILE([#include ],[ if test x$cf_cv_gnu_library = xyes; then # With glibc 2.19 (13 years after this check was begun), _DEFAULT_SOURCE - # was changed to help a little... + # was changed to help a little. newlib incorporated the change about 4 + # years later. AC_CACHE_CHECK(if _DEFAULT_SOURCE can be used as a basis,cf_cv_gnu_library_219,[ cf_save="$CPPFLAGS" CF_APPEND_TEXT(CPPFLAGS,-D_DEFAULT_SOURCE) AC_TRY_COMPILE([#include ],[ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 19) || (__GLIBC__ > 2) return 0; + #elif (__NEWLIB__ == 2 && __NEWLIB_MINOR__ >= 4) || (__GLIBC__ > 3) + return 0; #else # error GNU C library __GLIBC__.__GLIBC_MINOR__ is too old #endif], @@ -2878,7 +2883,7 @@ fi AC_SUBST(PKG_CONFIG) ])dnl dnl --------------------------------------------------------------------------- -dnl CF_POSIX_C_SOURCE version: 10 updated: 2018/06/20 20:23:13 +dnl CF_POSIX_C_SOURCE version: 11 updated: 2018/12/31 20:46:17 dnl ----------------- dnl Define _POSIX_C_SOURCE to the given level, and _POSIX_SOURCE if needed. dnl @@ -2893,7 +2898,10 @@ dnl dnl Parameters: dnl $1 is the nominal value for _POSIX_C_SOURCE AC_DEFUN([CF_POSIX_C_SOURCE], -[ +[AC_REQUIRE([CF_POSIX_VISIBLE])dnl + +if test "$cf_cv_posix_visible" = no; then + cf_POSIX_C_SOURCE=ifelse([$1],,199506L,[$1]) cf_save_CFLAGS="$CFLAGS" @@ -2950,6 +2958,35 @@ if test "$cf_cv_posix_c_source" != no ; then CF_ADD_CFLAGS($cf_cv_posix_c_source) fi +fi # cf_cv_posix_visible + +])dnl +dnl --------------------------------------------------------------------------- +dnl CF_POSIX_VISIBLE version: 1 updated: 2018/12/31 20:46:17 +dnl ---------------- +dnl POSIX documents test-macros which an application may set before any system +dnl headers are included to make features available. +dnl +dnl Some BSD platforms (originally FreeBSD, but copied by a few others) +dnl diverged from POSIX in 2002 by setting symbols which make all of the most +dnl recent features visible in the system header files unless the application +dnl overrides the corresponding test-macros. Doing that introduces portability +dnl problems. +dnl +dnl This macro makes a special check for the symbols used for this, to avoid a +dnl conflicting definition. +AC_DEFUN([CF_POSIX_VISIBLE], +[ +AC_CACHE_CHECK(if the POSIX test-macros are already defined,cf_cv_posix_visible,[ +AC_TRY_COMPILE([#include ],[ +#if defined(__POSIX_VISIBLE) && ((__POSIX_VISIBLE - 0L) > 0) \ + && defined(__XSI_VISIBLE) && ((__XSI_VISIBLE - 0L) > 0) \ + && defined(__BSD_VISIBLE) && ((__BSD_VISIBLE - 0L) > 0) \ + && defined(__ISO_C_VISIBLE) && ((__ISO_C_VISIBLE - 0L) > 0) +#error conflicting symbols found +#endif +],[cf_cv_posix_visible=no],[cf_cv_posix_visible=yes]) +]) ])dnl dnl --------------------------------------------------------------------------- dnl CF_PRG_RULES version: 1 updated: 2006/06/03 11:45:08 @@ -3831,7 +3868,7 @@ esac ])dnl dnl --------------------------------------------------------------------------- -dnl CF_XOPEN_SOURCE version: 53 updated: 2018/06/16 18:58:58 +dnl CF_XOPEN_SOURCE version: 55 updated: 2018/12/31 20:46:17 dnl --------------- dnl Try to get _XOPEN_SOURCE defined properly that we can use POSIX functions, dnl or adapt to the vendor's definitions to get equivalent functionality, @@ -3842,6 +3879,9 @@ dnl $1 is the nominal value for _XOPEN_SOURCE dnl $2 is the nominal value for _POSIX_C_SOURCE AC_DEFUN([CF_XOPEN_SOURCE],[ AC_REQUIRE([AC_CANONICAL_HOST]) +AC_REQUIRE([CF_POSIX_VISIBLE]) + +if test "$cf_cv_posix_visible" = no; then cf_XOPEN_SOURCE=ifelse([$1],,500,[$1]) cf_POSIX_C_SOURCE=ifelse([$2],,199506L,[$2]) @@ -3861,7 +3901,7 @@ case $host_os in cf_xopen_source="-D_DARWIN_C_SOURCE" cf_XOPEN_SOURCE= ;; -(freebsd*|dragonfly*) +(freebsd*|dragonfly*|midnightbsd*) # 5.x headers associate # _XOPEN_SOURCE=600 with _POSIX_C_SOURCE=200112L # _XOPEN_SOURCE=500 with _POSIX_C_SOURCE=199506L @@ -3956,6 +3996,7 @@ make an error CF_TRY_XOPEN_SOURCE fi fi +fi # cf_cv_posix_visible ]) dnl --------------------------------------------------------------------------- dnl CF_X_ATHENA version: 23 updated: 2015/04/12 15:39:00