diff options
| -rw-r--r-- | scripts/build/libc/uClibc.sh | 97 |
1 files changed, 54 insertions, 43 deletions
diff --git a/scripts/build/libc/uClibc.sh b/scripts/build/libc/uClibc.sh index 046ba1d0..6e554f93 100644 --- a/scripts/build/libc/uClibc.sh +++ b/scripts/build/libc/uClibc.sh @@ -81,15 +81,6 @@ do_libc_backend() { CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc-${libc_mode}" CT_IterateMultilibs do_libc_backend_once multilib libc_mode="${libc_mode}" - if [ "${libc_mode}" = "final" -a "${CT_SHARED_LIBS}" = "y" ]; then - # uClibc and GCC disagree where the dynamic linker lives. uClibc always - # places it in the MULTILIB_DIR, while gcc does that for *some* variants - # and expects it in /lib for the other. So, create a symlink from lib - # to the actual location, but only if that will not override the actual - # file in /lib. Thus, need to do this after all the variants are built. - echo "int main(void) { return 0; }" > test-ldso.c - CT_IterateMultilibs do_libc_ldso_fixup ldso_fixup - fi CT_Popd CT_EndStep @@ -255,39 +246,6 @@ do_libc_backend_once() { CT_EndStep } -do_libc_ldso_fixup() { - local multi_dir multi_os_dir multi_root multi_flags multi_index multi_count - local ldso ldso_f ldso_d multilib_dir - - for arg in "$@"; do - eval "${arg// /\\ }" - done - - CT_DoLog EXTRA "Checking dynamic linker for multilib '${multi_flags}'" - - multilib_dir="/lib/${multi_os_dir}" - CT_SanitizeVarDir multilib_dir - - CT_DoExecLog ALL "${CT_TARGET}-gcc" -o test-ldso ../test-ldso.c ${multi_flags} - ldso=$( ${CT_TARGET}-readelf -Wl test-ldso | \ - grep 'Requesting program interpreter: ' | \ - sed -e 's,.*: ,,' -e 's,\].*,,' ) - CT_DoLog DEBUG "Detected dynamic linker for multilib '${multi_flags}': '${ldso}'" - - ldso_d="${ldso%/ld*.so.*}" - ldso_f="${ldso##*/}" - # Create symlink if GCC produced an executable, dynamically linked, it was requesting - # a linker not in the current directory, and there is no such file in the expected - # ldso dir. - if [ -n "${ldso}" -a "${ldso_d}" != "${multilib_dir}" -a ! -r "${multi_root}${ldso}" ]; then - # Convert ldso_d to "how many levels we need to go up" and remove - # leading slash. - ldso_d=$( echo "${ldso_d#/}" | sed 's,[^/]\+,..,g' ) - CT_DoExecLog ALL ln -sf "${ldso_d}${multilib_dir}/${ldso_f}" \ - "${multi_root}${ldso}" - fi -} - # Initialises the .config file to sensible values # $1: original file # $2: modified file @@ -472,5 +430,58 @@ manage_uClibc_config() { } do_libc_post_cc() { - : + # uClibc and GCC disagree where the dynamic linker lives. uClibc always + # places it in the MULTILIB_DIR, while gcc does that for *some* variants + # and expects it in /lib for the other. So, create a symlink from lib + # to the actual location, but only if that will not override the actual + # file in /lib. Thus, need to do this after all the variants are built. + # Moreover, need to do this after the final compiler is built: on targets + # that use elf2flt, the core compilers cannot find ld when running elf2flt. + CT_DoStep INFO "Checking dynamic linker symlinks" + CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc-post_cc" + echo "int main(void) { return 0; }" > test-ldso.c + CT_IterateMultilibs do_libc_ldso_fixup ldso_fixup + CT_Popd + CT_EndStep +} + +do_libc_ldso_fixup() { + local multi_dir multi_os_dir multi_root multi_flags multi_index multi_count + local binary + local ldso ldso_f ldso_d multilib_dir + + for arg in "$@"; do + eval "${arg// /\\ }" + done + + CT_DoLog EXTRA "Checking dynamic linker for multilib '${multi_flags}'" + + multilib_dir="/lib/${multi_os_dir}" + CT_SanitizeVarDir multilib_dir + + CT_DoExecLog ALL "${CT_TARGET}-gcc" -o test-ldso ../test-ldso.c ${multi_flags} + if [ -r "test-ldso.gdb" ]; then + binary="test-ldso.gdb" + else + binary="test-ldso" + fi + if ${CT_TARGET}-readelf -Wl "${binary}" | grep -q 'Requesting program interpreter: '; then + ldso=$( ${CT_TARGET}-readelf -Wl "${binary}" | \ + grep 'Requesting program interpreter: ' | \ + sed -e 's,.*: ,,' -e 's,\].*,,' ) + fi + CT_DoLog DEBUG "Detected dynamic linker for multilib '${multi_flags}': '${ldso}'" + + ldso_d="${ldso%/ld*.so.*}" + ldso_f="${ldso##*/}" + # Create symlink if GCC produced an executable, dynamically linked, it was requesting + # a linker not in the current directory, and there is no such file in the expected + # ldso dir. + if [ -n "${ldso}" -a "${ldso_d}" != "${multilib_dir}" -a ! -r "${multi_root}${ldso}" ]; then + # Convert ldso_d to "how many levels we need to go up" and remove + # leading slash. + ldso_d=$( echo "${ldso_d#/}" | sed 's,[^/]\+,..,g' ) + CT_DoExecLog ALL ln -sf "${ldso_d}${multilib_dir}/${ldso_f}" \ + "${multi_root}${ldso}" + fi } |