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| author | fxcoudert <fxcoudert@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-12-13 21:42:02 +0000 |
|---|---|---|
| committer | fxcoudert <fxcoudert@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-12-13 21:42:02 +0000 |
| commit | 87ebeb4cb1caf22dbfd1d6cccb0d7847fabd1aaf (patch) | |
| tree | f3dc8a59dcb1995ea5e15a624963fd3e39e038fe /configure | |
| parent | 61cd3e5752228e5ccc59f971abe7aea068d894fd (diff) | |
| download | linaro-gcc-87ebeb4cb1caf22dbfd1d6cccb0d7847fabd1aaf.tar.gz linaro-gcc-87ebeb4cb1caf22dbfd1d6cccb0d7847fabd1aaf.tar.bz2 linaro-gcc-87ebeb4cb1caf22dbfd1d6cccb0d7847fabd1aaf.zip | |
* configure.ac: Add user-friendly check for native x86_64-linux
multilibs.
* configure: Regenerate.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@205975 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/configure b/configure index d4a82137bad..749a35ea0a7 100755 --- a/configure +++ b/configure @@ -7500,6 +7500,26 @@ if test x${is_cross_compiler} = xyes ; then target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}" fi +# Special user-friendly check for native x86_64-linux build, if +# multilib is not explicitly enabled. +case "$target:$have_compiler:$host:$target:$enable_multilib" in + x86_64-*linux*:yes:$build:$build:) + # Make sure we have a developement environment that handles 32-bit + dev64=no + echo "int main () { return 0; }" > conftest.c + ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c + if test $? = 0 ; then + if test -s conftest || test -s conftest.exe ; then + dev64=yes + fi + fi + rm -f conftest* + if test x${dev64} != xyes ; then + as_fn_error "I suspect your system does not have 32-bit developement libraries (libc and headers). If you have them, rerun configure with --enable-multilib. If you do not have them, and want to build a 64-bit-only compiler, rerun configure with --disable-multilib." "$LINENO" 5 + fi + ;; +esac + # Default to --enable-multilib. if test x${enable_multilib} = x ; then target_configargs="--enable-multilib ${target_configargs}" |