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authorAlexey Brodkin <abrodkin@synopsys.com>2021-02-19 15:44:02 (GMT)
committerAlexey Brodkin <abrodkin@synopsys.com>2021-02-19 16:25:12 (GMT)
commit5171b3033a6dc20bf120256abeb5c732f93077a0 (patch)
tree190203e71f46231bb94ae412856cf5db5bf1856b /scripts/build
parent0e0fd3cf1859bd86d016a5d54c32061fe1059d17 (diff)
newlib-nano: Create symlinks for nano-suffixed libs
If existing board's .specs are used for linking of a user's application, then instead of normally used libs like libc.a & libstdc++.a might be requested their "nano"-suffixed siblings: libc_nano.a, libstdc++_nano etc. That way: ----------------------------->8--------------------------- %rename link_gcc_c_sequence myboard_link_gcc_c_sequence *myboard_libc: %{!specs=nano.specs:-lc} %{specs=nano.specs:-lc_nano} *link_gcc_c_sequence: %(myboard_link_gcc_c_sequence) --start-group %G %(myboard_libc) --end-group ----------------------------->8--------------------------- Our companion newlib-nano libs are all built optimized for size, so we'd like to use them for linking. But given linker will see "-lc_nano -lstdc++_nano" on its command line non-suffixed libs will be ignored. To solve it we create those "_nano"-suffixed libraries as simple symlinks to existing libs.. Fixes https://github.com/crosstool-ng/crosstool-ng/issues/1458. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Diffstat (limited to 'scripts/build')
-rw-r--r--scripts/build/companion_libs/350-newlib_nano.sh32
1 files changed, 32 insertions, 0 deletions
diff --git a/scripts/build/companion_libs/350-newlib_nano.sh b/scripts/build/companion_libs/350-newlib_nano.sh
index 00ea948..28992c0 100644
--- a/scripts/build/companion_libs/350-newlib_nano.sh
+++ b/scripts/build/companion_libs/350-newlib_nano.sh
@@ -22,6 +22,31 @@ do_newlib_nano_extract() {
CT_ExtractPatch NEWLIB_NANO
}
+# Some architectures assume "nano" libs co-exist with normal ones
+# in the same folder, though being suffixed with "_nano".
+do_nano_libc_symlinks() {
+ CT_Pushd "${CT_PREFIX_DIR}/newlib-nano/${CT_TARGET}/lib/${multi_dir}"
+
+ CT_DoLog DEBUG "Installing nano libc symlinks in $PWD"
+
+ ln -s libc.a libc_nano.a
+ ln -s libm.a libm_nano.a
+ ln -s libg.a libg_nano.a
+
+ CT_Popd
+}
+
+do_nano_libstdcxx_symlinks() {
+ CT_Pushd "${CT_PREFIX_DIR}/newlib-nano/${CT_TARGET}/lib/${multi_dir}"
+
+ CT_DoLog DEBUG "Installing nano libstdc++ symlinks in $PWD"
+
+ ln -s libstdc++.a libstdc++_nano.a
+ ln -s libsupc++.a libsupc++_nano.a
+
+ CT_Popd
+}
+
#------------------------------------------------------------------------------
# Build an additional target libstdc++ with "-Os" (optimise for speed) option
# flag for libstdc++ "newlib_nano" variant.
@@ -59,6 +84,10 @@ do_cc_libstdcxx_newlib_nano()
CT_DoStep INFO "Installing libstdc++ newlib-nano"
CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-libstdcxx-newlib-nano"
"${final_backend}" "${final_opts[@]}"
+
+ # Create "nano" symlinks for libstdc++.a & libsup++.a
+ CT_IterateMultilibs do_nano_libstdcxx_symlinks libstdcxx_symlinks
+
CT_Popd
CT_EndStep
@@ -180,6 +209,9 @@ ENABLE_TARGET_OPTSPACE:target-optspace
EOF
+ # Create "nano" symlinks for libc.a, libg.a & libm.a
+ CT_IterateMultilibs do_nano_libc_symlinks libc_symlinks
+
CT_Popd
CT_EndStep