diff options
| -rw-r--r-- | ChangeLog | 13 | ||||
| -rwxr-xr-x | configure | 41 |
2 files changed, 52 insertions, 2 deletions
@@ -1,3 +1,16 @@ +2014-06-05 Kaz Kylheku <kaz@kylheku.com> + + * configure (lang_flags): Removing -D_BSD_SOURCE + from lang_flags. Adding a test for determining + which flag reveals BSD functions. This is due to the + braindamaged way feature selection macros work on + FreeBSD. There is no way to say "give me only the + functions from a certain version of the Unix spec, + plus traditional BSD functions", so we have to resort to + using the internal symbol __BSD_VISIBLE. Also, changing + the detection test for daemon function to the + pointer-based approach. + 2014-06-04 Kaz Kylheku <kaz@kylheku.com> * configure (lang_flags): drop -D_POSIX_C_SOURCE=199309L. @@ -97,7 +97,7 @@ yacc='$(cross)$(tool_prefix)$(yaccname)' yacc_given= nm='$(cross)$(tool_prefix)nm' opt_flags=-O2 -lang_flags='-ansi -D_BSD_SOURCE -D_XOPEN_SOURCE=500' +lang_flags='-ansi -D_XOPEN_SOURCE=500' diag_flags='-Wall -Werror=implicit-function-declaration -Werror=missing-prototypes -Werror=strict-prototypes' debug_flags=-g inline= @@ -803,6 +803,42 @@ case "$ccname" in esac # +# Detect stupid FreeBSD problem: no defined way to reveal +# traditional BSD functions if Unix compliance is selected with +# _XOPEN_SOURCE. Heaven help these troglodytes. +# + +printf "Detecting what symbol reveals BSD functions ... " + +cat > conftest.c <<! +#include <unistd.h> +#include <stdlib.h> + +int main(int argc, char **argv) +{ + int (*pdaemon)(int, int) = &daemon; +} +! + +if conftest ; then + printf "none needed\n" +else + for flag in _BSD_SOURCE __BSD_VISIBLE _GNU_SOURCE _X_OOPS; do + if [ $flag = _X_OOPS ] ; then + printf "failed\n" + break + fi + + if conftest EXTRA_FLAGS=-D$flag ; then + printf "%s\n" $flag + lang_flags="$lang_flags -D$flag" + gen_config_make + break + fi + done +fi + +# # Check for annoying warnings from ctype.h macros # @@ -1552,11 +1588,12 @@ fi printf "Checking for BSD daemon function ... " cat > conftest.c <<! +#include <stdlib.h> #include <unistd.h> int main(int argc, char **argv) { - return daemon(0, 0); + int (*pdaemon)(int, int) = &daemon; } ! if conftest ; then |