diff options
Diffstat (limited to 'autogen.sh')
| -rwxr-xr-x | autogen.sh | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/autogen.sh b/autogen.sh index c84a6b5c5dd2..ee72627ffe23 100755 --- a/autogen.sh +++ b/autogen.sh @@ -1,6 +1,7 @@ #!/bin/sh -e : "${AUTORECONF:=autoreconf}" +: "${BUILD_YEAR2038:=no}" AUTORECONFVERSION=`$AUTORECONF --version 2>&1 | grep "^autoreconf" | sed 's/.*) *//'` @@ -21,5 +22,43 @@ if [ "$maj" = "" ] || [ "$min" = "" ] || \ exit 1 fi +# On Linux, if Autoconf version >= 2.72 and GNU C Library version >= 2.34, +# s/AC_SYS_LARGEFILE/AC_SYS_YEAR2038_RECOMMENDED/ to ensure time_t +# is Y2038-safe. +if [ "$BUILD_YEAR2038" = yes ] && [ "`uname -s`" = Linux ]; then + if [ "$maj" -gt 2 ] || { [ "$maj" -eq 2 ] && [ "$min" -ge 72 ]; }; then + GLIBC_VERSION=`ldd --version|head -1|grep GLIBC|sed 's/.* //'` + maj_glibc=`echo "$GLIBC_VERSION" | cut -d. -f1` + min_glibc=`echo "$GLIBC_VERSION" | cut -d. -f2` + echo "GNU C Library identification: $GLIBC_VERSION" + if [ "$maj_glibc" -gt 2 ] || { [ "$maj_glibc" -eq 2 ] && \ + [ "$min_glibc" -ge 34 ]; }; then + CONFIGURE_AC_NEW="configure.ac.new$$" + sed 's/^AC_SYS_LARGEFILE/AC_SYS_YEAR2038_RECOMMENDED/' \ + <configure.ac >"$CONFIGURE_AC_NEW" + cmp -s configure.ac "$CONFIGURE_AC_NEW" || \ + cat "$CONFIGURE_AC_NEW" >configure.ac + rm -f "$CONFIGURE_AC_NEW" + echo 'Setup to ensure time_t is Y2038-safe.' + fi + fi +fi + echo "$AUTORECONF identification: $AUTORECONFVERSION" -"$AUTORECONF" -f + +# configure.ac is an Autoconf 2.69 file, but it works as expected even with +# Autoconf 2.72. However, in Autoconf versions 2.70 and later obsolete +# construct warnings are enabled by default, which adds varying (depending on +# the branch) amount of noise to the build matrix output, so provide a means +# to silence that. +env ${AUTOCONF_WARNINGS:+WARNINGS="$AUTOCONF_WARNINGS"} "$AUTORECONF" -f + +# Autoconf 2.71 adds a blank line after the final "exit 0" on Linux, but not +# on OpenBSD. Remove this difference to make it easier to compare the result +# of "make releasetar" across different platforms. From sed one-liners: +# "delete all trailing blank lines at end of file (works on all seds)". Don't +# use mktemp(1) because AIX does not have it. +CONFIGURE_NEW="configure.new$$" +sed -e :a -e '/^\n*$/{$d;N;ba' -e '}' <configure >"$CONFIGURE_NEW" +cmp -s configure "$CONFIGURE_NEW" || cat "$CONFIGURE_NEW" >configure +rm -f "$CONFIGURE_NEW" |