Some environments don't support symbolic links :-(
If ln -s is not supported, configure can figure it out, and as a last resort
uses:
LN_S = cp -p
I've found two problems with this.
The first problem is that LN_S is not propagated past the top-level Makefile.
This
can manifest as strange GCC_NO_EXECUTABLES messages:
Link tests are not allowed after GCC_NO_EXECUTABLES
The patch (against an older gcc 4.2.4) addresses this first problem.
The second is that:
cp -p $1 $2 mimics ln -s $1 $2
only if $1 is an absolute path, or $2 does not contain any path separators.
This is not always true. For example:
gcc/gcc/config/t-slibgcc-elf-ver: $(LN_S) $(SHLIB_SONAME)
$(SHLIB_DIR)/$(SHLIB_SOLINK)
There doesn't seem to be any straightforward way around this
except diligence:
cd $(SHLIB_DIR) && $(LN_S) $(SHLIB_SONAME) $(SHLIB_SOLINK)
Earl
--- gcc/gcc/Makefile.in.orig 2012-02-01 11:27:52.783587886 -0800
+++ gcc/gcc/Makefile.in 2012-02-01 11:56:37.973586113 -0800
@@ -1465,6 +1465,7 @@
MULTILIB_OSDIRNAMES='$(MULTILIB_OSDIRNAMES)' \
ASM_HIDDEN_OP='$(ASM_HIDDEN_OP)' \
GCC_FOR_TARGET='$(GCC_FOR_TARGET)' \
+ LN_S='$(LN_S)' \
mkinstalldirs='$(mkinstalldirs)' \
$(SHELL) mklibgcc > tmp-libgcc.mk
mv tmp-libgcc.mk libgcc.mk
--- gcc/Makefile.in.orig 2012-02-01 15:08:00.353579677 -0800
+++ gcc/Makefile.in 2012-02-01 15:09:38.196088006 -0800
@@ -486,7 +486,8 @@
"`echo 'LANGUAGES=$(LANGUAGES)' | sed -e s'/[^=][^=]*=$$/XFOO=/'`" \
"LEAN=$(LEAN)" \
"CONFIG_SHELL=$(SHELL)" \
- "MAKEINFO=$(MAKEINFO) $(MAKEINFOFLAGS)"
+ "MAKEINFO=$(MAKEINFO) $(MAKEINFOFLAGS)" \
+ "LN_S=$(LN_S)"
# We leave this in just in case, but it is not needed anymore.
RECURSE_FLAGS_TO_PASS = $(BASE_FLAGS_TO_PASS)
