Commit 2ef26ceb authored by Eli Zaretskii's avatar Eli Zaretskii
Browse files

Conclude what can be done about headers, macros, and compiler switches.

What is left is missing and replaced functions provided by Emacs.
parent 9e821c83
......@@ -329,10 +329,15 @@ if test "${enableval}" != "no"; then
dnl The name of this option is unfortunate. It predates, and has no
dnl relation to, the "sampling-based elisp profiler" added in 24.3.
dnl Actually, it stops it working.
[build emacs with profiling support.
This might not work on all platforms])],
[build emacs with low-level, gprof profiling support.
Mainly useful for debugging Emacs itself. May not work on
all platforms. Stops profiler.el working.])],
if test x$ac_enable_profiling != x ; then
......@@ -718,6 +723,8 @@ else
nw="$nw -Wfloat-equal" # warns about high-quality code
nw="$nw -Winline" # OK to ignore 'inline'
nw="$nw -Wjump-misses-init" # We sometimes safely jump over init.
nw="$nw -Wstrict-overflow" # OK to optimize assuming that
# signed overflow has undefined behavior
nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
......@@ -725,11 +732,23 @@ else
# <>.
nw="$nw -Wshadow"
# The following lines should be removable at some point.
nw="$nw -Wstack-protector"
nw="$nw -Wstrict-overflow"
# The following line should be removable at some point.
nw="$nw -Wsuggest-attribute=pure"
AC_MSG_CHECKING([whether to use -Wstack-protector])
[[#if (1 <= __LONG_MAX__ >> 31 >> 31 \
&& 4 < __GNUC__ + (7 < __GNUC_MINOR__ + (2 <= __GNUC_PATCHLEVEL__)))
/* OK */
#error "Not GCC, or GCC before 4.7.2, or 'long int' has < 64 bits."
nw="$nw -Wstack-protector"])
gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
for w in $ws; do
......@@ -1283,7 +1302,7 @@ fi
dnl checks for header files
linux/version.h sys/systeminfo.h
fcntl.h coff.h pty.h
coff.h pty.h
sys/vlimit.h sys/resource.h
sys/utsname.h pwd.h utmp.h util.h)
......@@ -3003,8 +3022,8 @@ AC_SUBST(BLESSMAIL_TARGET)
AC_CHECK_FUNCS(gethostname \
getrusage get_current_dir_name \
lrand48 \
fpathconf select getpagesize setlocale \
utimes getrlimit setrlimit getcwd shutdown getaddrinfo \
select getpagesize setlocale \
utimes getrlimit setrlimit shutdown getaddrinfo \
strsignal setitimer \
sendto recvfrom getsockname getpeername getifaddrs freeifaddrs \
gai_strerror mkstemp getline getdelim fsync sync \
......@@ -3013,14 +3032,6 @@ getpwent endpwent getgrent endgrent \
touchlock \
cfmakeraw cfsetspeed copysign __executable_start)
dnl getwd appears to be buggy on SVR4.2, so we don't use it.
if test $opsys = unixware; then
dnl In case some other test ends up checking for getwd.
AC_DEFINE(BROKEN_GETWD, 1, [Define if getwd should not be used.])
## Eric Backus <> says, HP-UX 9.x on HP 700 machines
## has a broken `rint' in some library versions including math library
## version number A.09.05.
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