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| author | Alan Coopersmith <alan.coopersmith@oracle.com> | 2022-11-05 09:16:14 -0700 |
|---|---|---|
| committer | Alan Coopersmith <alan.coopersmith@oracle.com> | 2022-11-05 09:16:14 -0700 |
| commit | 644bea5c481365343e709d0f2ddbc553a6d8fc30 (patch) | |
| tree | 8d33caebfc1e1427aa0d3b852b90022251843858 | |
| parent | f476c0a09c0d0dd22d22f447cae9fa02eb560506 (diff) | |
Only link with libbsd if needed for reallocarray() or strlcat()
Avoid unnecessary library dependency when using a libc with these
functions included
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
| -rw-r--r-- | configure.ac | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/configure.ac b/configure.ac index 701f9fd..fe2f987 100644 --- a/configure.ac +++ b/configure.ac @@ -50,12 +50,18 @@ XORG_CHECK_SGML_DOCTOOLS(1.7) # Checks for header files. AC_CHECK_HEADERS([endian.h poll.h sys/poll.h]) -# Checks for library functions. -PKG_CHECK_MODULES([LIBBSD], [libbsd-overlay], [ +# Checks for non-standard functions and fallback to libbsd if we can +AC_LINK_IFELSE([AC_LANG_CALL([], [reallocarray])], + [TRY_LIBBSD="no"], [TRY_LIBBSD="yes"]) +AC_LINK_IFELSE([AC_LANG_CALL([], [strlcat])], + [TRY_LIBBSD="no"], [TRY_LIBBSD="yes"]) +AS_IF([test "x$TRY_LIBBSD" = "xyes"], + [PKG_CHECK_MODULES([LIBBSD], [libbsd-overlay], [ CFLAGS="$CFLAGS $LIBBSD_CFLAGS" LIBS="$LIBS $LIBBSD_LIBS" -], [:]) +], [:])]) +# Checks for library functions. AC_CHECK_FUNCS([poll readlink strlcat]) AC_CONFIG_LIBOBJ_DIR([src/util]) AC_REPLACE_FUNCS([reallocarray realpath strlcat strlcpy]) |