Hi,
some linkers, namely the one on IRIX are rather strict concerning the
order or arguments for symbol resolution, i.e. no libraries listed
before objects or other libraries on the command line are considered
for symbol resolution. That means that -lpthread can't work if it's
put in CFLAGS, because it will not be considered for resolving
pthread_key_create in conftest.o. Apparently only $LIBS goes
after conftest.o when the linker is called.
Without the patch below, the POSIX Threads with '-lpthread' fails,
with the patch it succeeds. I haven't checked if that is relevant
at all, since that check is immediately followed by
checking for pthread_create in -lpthread... yes
regards,
rainer
--- ../src/git-2.6.2/configure.ac Fri Oct 16 23:58:26 CEST 2015
+++ configure.ac Sun Nov 01 23:19:41 CET 2015
@@ -1126,7 +1126,13 @@
# would then trigger compiler warnings on every single file we compile.
for opt in "" -mt -pthread -lpthread; do
old_CFLAGS="$CFLAGS"
- CFLAGS="$opt $CFLAGS"
+ old_LIBS="$LIBS"
+ if test "$(echo $opt | cut -b 1-2)" = -l ; then
+ LIBS="$opt $LIBS"
+ else
+ CFLAGS="$opt $CFLAGS"
+ fi
+
AC_MSG_CHECKING([for POSIX Threads with '$opt'])
AC_LINK_IFELSE([PTHREADTEST_SRC],
[AC_MSG_RESULT([yes])
@@ -1138,6 +1144,7 @@
],
[AC_MSG_RESULT([no])])
CFLAGS="$old_CFLAGS"
+ LIBS="$old_LIBS"
done
if test $threads_found != yes; then
AC_CHECK_LIB([pthread], [pthread_create],
--
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