On 08.02.2012 02:01, Joseph S. Myers wrote:
On Wed, 8 Feb 2012, Matthias Klose wrote:
there is one more issue, when configuring
--with-sysroot=/ --with-gxx-include-dir=/usr/include/c++/4.7
in that the leading / is stripped away in configure.ac. This case needs an
explicit check. Ok for the trunk?
This looks like a case where any sysroot with a trailing '/' could
misbehave and remove a leading '/' that should be left there, i.e. where
gcc_gxx_without_sysroot should be computed in a way that ignores any
trailing '/' on the sysroot setting. Or is such a removal actually
harmless in all cases except for plain '/' as the sysroot?
not harmless, but not seen unless you pass --sysroot=<path with trailing /> to
the driver. so lets strip the trailing / as well.
this requires that the definition for
AC_ARG_WITH(sysroot, ...)
is moved before the use of the fixed with_sysroot before checking with_sysroot
in the gcc_gxx_without_sysroot check.
Matthias
* configure.ac: Move AC_ARG_WITH checks for native-system-header-dir,
build-sysroot, sysroot from the `Miscenalleous configure options'
to the `Directories' section.
Index: gcc/configure.ac
===================================================================
--- gcc/configure.ac (revision 183991)
+++ gcc/configure.ac (working copy)
@@ -118,6 +118,68 @@
local_prefix=/usr/local
fi
+AC_ARG_WITH([native-system-header-dir],
+ [ --with-native-system-header-dir=dir
+ use dir as the directory to look for standard
+ system header files in. Defaults to /usr/include.],
+[
+ case ${with_native_system_header_dir} in
+ yes|no) AC_MSG_ERROR([bad value ${withval} given for
--with-native-system-header-dir]) ;;
+ /* | [[A-Za-z]]:[[\\/]]*) ;;
+ *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be
an absolute directory]) ;;
+ esac
+ configured_native_system_header_dir="${withval}"
+], [configured_native_system_header_dir=])
+
+AC_ARG_WITH(build-sysroot,
+ [AS_HELP_STRING([--with-build-sysroot=sysroot],
+ [use sysroot as the system root during the build])],
+ [if test x"$withval" != x ; then
+ SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
+ fi],
+ [SYSROOT_CFLAGS_FOR_TARGET=])
+AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
+
+AC_ARG_WITH(sysroot,
+[AS_HELP_STRING([[--with-sysroot[=DIR]]],
+ [search for usr/lib, usr/include, et al, within DIR])],
+[
+ case ${with_sysroot} in
+ yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
+ *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
+ esac
+
+ TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
+
CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
+
+ if test "x$prefix" = xNONE; then
+ test_prefix=/usr/local
+ else
+ test_prefix=$prefix
+ fi
+ if test "x$exec_prefix" = xNONE; then
+ test_exec_prefix=$test_prefix
+ else
+ test_exec_prefix=$exec_prefix
+ fi
+ case ${TARGET_SYSTEM_ROOT} in
+ "${test_prefix}"|"${test_prefix}/"*|\
+ "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
+ '${prefix}'|'${prefix}/'*|\
+ '${exec_prefix}'|'${exec_prefix}/'*)
+ t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
+ TARGET_SYSTEM_ROOT_DEFINE="$t"
+ ;;
+ esac
+], [
+ TARGET_SYSTEM_ROOT=
+ TARGET_SYSTEM_ROOT_DEFINE=
+ CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
+])
+AC_SUBST(TARGET_SYSTEM_ROOT)
+AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
+AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
+
# Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
# passed in by the toplevel make and thus we'd get different behavior
# depending on where we built the sources.
@@ -739,68 +801,6 @@
], [enable_shared=yes])
AC_SUBST(enable_shared)
-AC_ARG_WITH([native-system-header-dir],
- [ --with-native-system-header-dir=dir
- use dir as the directory to look for standard
- system header files in. Defaults to /usr/include.],
-[
- case ${with_native_system_header_dir} in
- yes|no) AC_MSG_ERROR([bad value ${withval} given for
--with-native-system-header-dir]) ;;
- /* | [[A-Za-z]]:[[\\/]]*) ;;
- *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be
an absolute directory]) ;;
- esac
- configured_native_system_header_dir="${withval}"
-], [configured_native_system_header_dir=])
-
-AC_ARG_WITH(build-sysroot,
- [AS_HELP_STRING([--with-build-sysroot=sysroot],
- [use sysroot as the system root during the build])],
- [if test x"$withval" != x ; then
- SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
- fi],
- [SYSROOT_CFLAGS_FOR_TARGET=])
-AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
-
-AC_ARG_WITH(sysroot,
-[AS_HELP_STRING([[--with-sysroot[=DIR]]],
- [search for usr/lib, usr/include, et al, within DIR])],
-[
- case ${with_sysroot} in
- yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
- *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
- esac
-
- TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
-
CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
-
- if test "x$prefix" = xNONE; then
- test_prefix=/usr/local
- else
- test_prefix=$prefix
- fi
- if test "x$exec_prefix" = xNONE; then
- test_exec_prefix=$test_prefix
- else
- test_exec_prefix=$exec_prefix
- fi
- case ${TARGET_SYSTEM_ROOT} in
- "${test_prefix}"|"${test_prefix}/"*|\
- "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
- '${prefix}'|'${prefix}/'*|\
- '${exec_prefix}'|'${exec_prefix}/'*)
- t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
- TARGET_SYSTEM_ROOT_DEFINE="$t"
- ;;
- esac
-], [
- TARGET_SYSTEM_ROOT=
- TARGET_SYSTEM_ROOT_DEFINE=
- CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
-])
-AC_SUBST(TARGET_SYSTEM_ROOT)
-AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
-AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
-
AC_ARG_WITH(specs,
[AS_HELP_STRING([--with-specs=SPECS],
[add SPECS to driver command-line processing])],
* configure.ac: Strip trailing `/' from with_sysroot.
(gcc_gxx_include_dir): Don't strip a `/' sysroot value.
--- gcc/configure.ac.1 2012-02-08 02:38:57.199995985 +0100
+++ gcc/configure.ac 2012-02-08 02:46:21.890648210 +0100
@@ -145,6 +145,10 @@
[search for usr/lib, usr/include, et al, within DIR])],
[
case ${with_sysroot} in
+ /) ;;
+ */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
+ esac
+ case ${with_sysroot} in
yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
*) TARGET_SYSTEM_ROOT=$with_sysroot ;;
esac
@@ -211,7 +215,9 @@
if test "${with_sysroot+set}" = set; then
gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" :
"${with_sysroot}"'\(.*\)'`
if test "${gcc_gxx_without_sysroot}"; then
- gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
+ if test x${with_sysroot} != x/; then
+ gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
+ fi
gcc_gxx_include_dir_add_sysroot=1
fi
fi
