diff options
Diffstat (limited to 'newlib/configure.in')
| -rw-r--r-- | newlib/configure.in | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/newlib/configure.in b/newlib/configure.in index 01c6367a9..bfaf038c7 100644 --- a/newlib/configure.in +++ b/newlib/configure.in @@ -261,12 +261,27 @@ AC_CONFIG_SUBDIRS(libc) AC_CONFIG_SUBDIRS(libm) if test -z "${with_multisubdir}"; then + have_multisubdir=no AC_CONFIG_SUBDIRS(doc) - have_doc=yes else - have_doc= -fi -AM_CONDITIONAL(HAVE_DOC, test x$have_doc = xyes) + have_multisubdir=yes +fi +AM_CONDITIONAL(HAVE_DOC, test x$have_multisubdir = xno) + +# Some run-time support libraries provided by GCC (e.g. libgomp) use configure +# checks to detect certain features, e.g. availability of thread-local storage. +# The configure script generates a test program and tries to compile and link +# it. It should use target libraries and startfiles of the build tree if +# available and not random ones from the installation prefix for this +# procedure. The search directories specified by -B are a bit special, see +# for_each_path() in gcc.c of the GCC sources. First a search is performed on +# all search paths with the multilib directory appended (if desired), then a +# second search is performed on demand with the base directory only. For each +# multilib there is a "newlib" subdirectory. This directory is specified by a +# -B option for the support libraries. In order to find the newlib artifacts +# (ctr0.o, libc.a, libg.a and libm.a) they must be located in a proper multilib +# subdirectory withing the build directory. +AM_CONDITIONAL(HAVE_MULTISUBDIR, test x$have_multisubdir = xyes) EXTRA_DIRS= case $host in @@ -283,6 +298,7 @@ if test "x${have_crt0}" = "xyes"; then CRT0=crt0.o CRT0_DIR=libc/ fi +AM_CONDITIONAL(HAVE_CRT0, test x$have_crt0 = xyes) AC_SUBST(CRT0) AC_SUBST(CRT0_DIR) |