diff options
Diffstat (limited to 'gl/m4/printf.m4')
| -rw-r--r-- | gl/m4/printf.m4 | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/gl/m4/printf.m4 b/gl/m4/printf.m4 index 9df21534..df473d87 100644 --- a/gl/m4/printf.m4 +++ b/gl/m4/printf.m4 @@ -1,4 +1,4 @@ -# printf.m4 serial 62 +# printf.m4 serial 64 dnl Copyright (C) 2003, 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -711,6 +711,16 @@ int main () [gl_cv_func_printf_directive_n=yes], [gl_cv_func_printf_directive_n=no], [case "$host_os" in + # Guess no on glibc when _FORTIFY_SOURCE >= 2. + *-gnu* | gnu*) AC_COMPILE_IFELSE( + [AC_LANG_SOURCE( + [[#if _FORTIFY_SOURCE >= 2 + error fail + #endif + ]])], + [gl_cv_func_printf_directive_n="guessing yes"], + [gl_cv_func_printf_directive_n="guessing no"]) + ;; # Guess no on Android. linux*-android*) gl_cv_func_printf_directive_n="guessing no";; # Guess no on native Windows. @@ -1412,10 +1422,18 @@ int main () [gl_cv_func_snprintf_directive_n=yes], [gl_cv_func_snprintf_directive_n=no], [ -changequote(,)dnl case "$host_os" in - # Guess yes on glibc systems. - *-gnu* | gnu*) gl_cv_func_snprintf_directive_n="guessing yes";; + # Guess no on glibc when _FORTIFY_SOURCE >= 2. + *-gnu* | gnu*) AC_COMPILE_IFELSE( + [AC_LANG_SOURCE( + [[#if _FORTIFY_SOURCE >= 2 + error fail + #endif + ]])], + [gl_cv_func_snprintf_directive_n="guessing yes"], + [gl_cv_func_snprintf_directive_n="guessing no"]) + ;; +changequote(,)dnl # Guess yes on musl systems. *-musl*) gl_cv_func_snprintf_directive_n="guessing yes";; # Guess yes on FreeBSD >= 5. @@ -1448,8 +1466,8 @@ changequote(,)dnl mingw*) gl_cv_func_snprintf_directive_n="guessing no";; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_snprintf_directive_n="$gl_cross_guess_normal";; - esac changequote([,])dnl + esac ]) ]) ]) |