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configure.ac: Summarize how many times we warned.

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It's way too easy to have a warning in the middle of the configure
process that the user never notices.
This commit is contained in:
Nick Mathewson 2020-09-23 10:11:36 -04:00 committed by David Goulet
parent ff300b384f
commit ec9ac0756d
1 changed files with 21 additions and 0 deletions
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21
configure.ac
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@ -24,6 +24,11 @@ AC_DEFINE(APPROX_RELEASE_DATE, ["2020-06-09"], # for 0.4.5.0-alpha-dev
# "subdir-objects" means put .o files in the same directory as the .c files
AM_INIT_AUTOMAKE([foreign 1.11 subdir-objects -Wall -Werror])
tor_ac_n_warnings=0
tor_incr_n_warnings() {
tor_ac_n_warnings=`expr $tor_ac_n_warnings + 1`
}
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
AC_CONFIG_HEADERS([orconfig.h])
@ -432,6 +437,7 @@ AC_SUBST([PYTHON], [$tor_cv_PYTHON])
PYTHON="$tor_cv_PYTHON"
if test "x$PYTHON" = "x"; then
tor_incr_n_warnings
AC_MSG_WARN([Python 3 unavailable; some tests will not be run.])
fi
@ -1229,6 +1235,7 @@ else
have_lzma=no)
if test "x$have_lzma" = "xno" ; then
tor_incr_n_warnings
AC_MSG_WARN([Unable to find liblzma, $pkg_config_user_action, or set LZMA_CFLAGS and LZMA_LIBS.])
fi
fi
@ -1261,6 +1268,7 @@ else
have_zstd=no)
if test "x$have_zstd" = "xno" ; then
tor_incr_n_warnings
AC_MSG_WARN([Unable to find libzstd, $pkg_config_user_action, or set ZSTD_CFLAGS and ZSTD_LIBS.])
fi
fi
@ -1365,6 +1373,7 @@ fi
if test "$fragile_hardening" = "yes"; then
TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
tor_incr_n_warnings
AC_MSG_WARN([The compiler supports -ftrapv, but for some reason I was not able to link with -ftrapv. Are you missing run-time support? Run-time hardening will not work as well as it should.])
fi
@ -1905,6 +1914,7 @@ void try_atomic_init(struct x *xx)
if test "$tor_cv_stdatomic_works" = "yes"; then
AC_DEFINE(STDATOMIC_WORKS, 1, [Set to 1 if we can compile a simple stdatomic example.])
elif test "$ac_cv_header_stdatomic_h" = "yes"; then
tor_incr_n_warnings
AC_MSG_WARN([Your compiler provides the stdatomic.h header, but it doesn't seem to work. I'll pretend it isn't there. If you are using Clang on Debian, maybe this is because of https://bugs.debian.org/903709 ])
fi
@ -2088,6 +2098,7 @@ AS_CASE([$malloc],
],
[openbsd], [
tor_incr_n_warnings
AC_MSG_WARN([The openbsd malloc port is deprecated in Tor 0.3.5 and will be removed in a future version.])
enable_openbsd_malloc=yes
],
@ -2616,6 +2627,7 @@ TOR_TRY_COMPILE_WITH_CFLAGS([@warning_flags], [],
if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
case "$host_os" in
darwin*)
tor_incr_n_warnings
AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-coverage.])
esac
fi
@ -2653,6 +2665,7 @@ if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
fi
if test "$fragile_hardening" = "yes"; then
tor_incr_n_warnings
AC_MSG_WARN([
============
@ -2670,6 +2683,7 @@ fi
AC_OUTPUT
if test "$openssl_ver_mismatch" = "yes"; then
tor_incr_n_warnings
AC_MSG_WARN([
============
Warning! The version OpenSSL headers we get from compiling with
@ -2831,3 +2845,10 @@ PPRINT_PROP_STRING([Man Pages], [$report_mandir])
AS_ECHO
AS_ECHO(["Configure Line: ./configure $configure_flags"])
if test "$tor_ac_n_warnings" != "0"; then
AS_ECHO
PPRINT_WARN([
Encountered $tor_ac_n_warnings warning(s). See messages above for more info.
])
fi