diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 94 |
1 files changed, 68 insertions, 26 deletions
diff --git a/configure.in b/configure.in index 340e86774a..4c507bb1e3 100644 --- a/configure.in +++ b/configure.in @@ -36,16 +36,9 @@ dnl Arguments to specify presence of other packages/features. AC_ARG_WITH(fp, dnl [ --with-fp if using floating-point hardware [default=yes]], with_fp=$withval, with_fp=yes) -AC_ARG_WITH(gnu-binutils, dnl - --with-gnu-binutils if using GNU binutils (as and ld), - gnu_binutils=$withval, gnu_binutils=no) -AC_ARG_WITH(gnu-ld, dnl - --with-gnu-ld if using GNU ld (in the binutils package), - gnu_ld=$withval, gnu_ld=no) -AC_ARG_WITH(gnu-as, dnl - --with-gnu-as if using GNU as (in the binutils package), - gnu_as=$withval, gnu_as=no) -test $gnu_binutils = yes && gnu_as=yes gnu_ld=yes +AC_ARG_WITH(binutils, dnl + --with-binutils=PATH specify location of binutils (as and ld) + path_binutils=$withval, path_binutils='') AC_ARG_WITH(elf, dnl --with-elf if using the ELF object format, elf=$withval, elf=no) @@ -64,8 +57,11 @@ AC_ARG_ENABLE(sanity-checks, dnl except in special situations) [default=yes]], enable_sanity=$enableval, enable_sanity=yes) -dnl Arguments to enable or disable building the shared, profiled, and -dnl -fomit-frame-pointer libraries. +dnl Arguments to enable or disable building the static, shared, profiled, +dnl and -fomit-frame-pointer libraries. +AC_ARG_ENABLE(static, dnl +[ --enable-static build static library [default=yes]], + static=$enableval, static=yes) AC_ARG_ENABLE(shared, dnl [ --enable-shared build shared library [default=yes if GNU ld & ELF]], shared=$enableval, shared=default) @@ -78,6 +74,10 @@ AC_ARG_ENABLE(omitfp, dnl AC_ARG_ENABLE(bounded, dnl [ --enable-bounded build with runtime bounds checking [default=no]], bounded=$enableval, bounded=no) +AC_ARG_ENABLE(versioning, dnl +[ --disable-versioning do not include versioning information in the + library objects [default=yes if supported]], + enable_versioning=$enableval, enable_versioning=yes) dnl Generic infrastructure for drop-in additions to libc. AC_ARG_ENABLE(add-ons, dnl @@ -120,19 +120,25 @@ esac ### I put this here to prevent those annoying emails from people who cannot ### read and try to compile glibc on unsupported platforms. --drepper ### -case "$host_os" in -linux* | gnu*) - ;; -*) - echo "*** The GNU C library is currently not available for this platform." - echo "*** So far nobody cared to port it and if there is no volunteer it" - echo "*** might never happen. So, if you have interest to see glibc on" - echo "*** this platform visit" - echo "*** http://www.gnu.ai.mit.edu/software/libc/porting.html" - echo "*** and join the group of porters" - exit 1 - ;; -esac +### By using the undocumented --enable-hacker-mode option for configure +### one can skip this test to make the configuration not fail for unsupported +### platforms. +### +if test -z "$enable_hacker_mode"; then + case "$host_os" in + linux* | gnu*) + ;; + *) + echo "*** The GNU C library is currently not available for this platform." + echo "*** So far nobody cared to port it and if there is no volunteer it" + echo "*** might never happen. So, if you have interest to see glibc on" + echo "*** this platform visit" + echo "*** http://www.gnu.ai.mit.edu/software/libc/porting.html" + echo "*** and join the group of porters" + exit 1 + ;; + esac +fi # We keep the original values in `$config_*' and never modify them, so we # can write them unchanged into config.make. Everything else uses @@ -401,6 +407,7 @@ if test $host != $build; then fi AC_SUBST(cross_compiling) AC_PROG_CPP +LIBC_PROG_BINUTILS AC_CHECK_TOOL(AR, ar) AC_CHECK_TOOL(RANLIB, ranlib, :) @@ -568,7 +575,8 @@ else fi rm -f conftest*]) if test $libc_cv_asm_symver_directive = yes && - test $libc_cv_ld_version_script_option = yes; then + test $libc_cv_ld_version_script_option = yes && + test $enable_versioning = yes; then VERSIONING=yes AC_DEFINE(DO_VERSIONING) else @@ -749,6 +757,39 @@ fi rm -f conftest*]) AC_SUBST(libc_cv_gcc_no_exceptions)dnl +AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info, +[cat > conftest.c <<EOF +#line __oline__ "configure" +static char __EH_FRAME_BEGIN__[]; +_start () +{ + __register_frame (__EH_FRAME_BEGIN__); + __deregister_frame (__EH_FRAME_BEGIN__); +} +int __eh_pc; +__throw () {} +/* FIXME: this is fragile. */ +malloc () {} +strcmp () {} +strlen () {} +memcpy () {} +memset () {} +free () {} +abort () {} +EOF +dnl No \ in command here because it ends up inside ''. +if AC_TRY_COMMAND([${CC-cc} $CFLAGS + -nostdlib -nostartfiles + -o conftest conftest.c -lgcc >&AC_FD_CC]); then + libc_cv_gcc_dwarf2_unwind_info=yes +else + libc_cv_gcc_dwarf2_unwind_info=no +fi +rm -f conftest*]) +if test $libc_cv_gcc_dwarf2_unwind_info = yes; then + AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) +fi + ### End of automated tests. ### Now run sysdeps configure fragments. @@ -876,6 +917,7 @@ if test $elf = yes; then AC_DEFINE(HAVE_ELF) fi +AC_SUBST(static) AC_SUBST(shared) if test $shared = default; then if test $gnu_ld = yes; then |