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gnu: cross-base: Fix C++ cross-compilation problems with GCC 7.

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* gnu/packages/cross-base.scm (cross-gcc-arguments)[#:configure-flags]: Add
"--with-sysroot=/".
This commit is contained in:
Marius Bakke 2019-06-06 19:33:05 +02:00
parent 3f151d90a3
commit 871dbd6c6e
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1 changed files with 9 additions and 1 deletions
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gnu/packages/cross-base.scm
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@ -121,7 +121,15 @@ base compiler and using LIBC (which may be either a libc package or #f.)"
,@(if libc ,@(if libc
`( ;; Disable libcilkrts because it is not `( ;; Disable libcilkrts because it is not
;; ported to GNU/Hurd. ;; ported to GNU/Hurd.
"--disable-libcilkrts") "--disable-libcilkrts"
;; When building a cross compiler, --with-sysroot is
;; implicitly set to "$gcc_tooldir/sys-root". This does
;; not work for us, because --with-native-system-header-dir
;; is searched for relative to this location. Thus, we set
;; it to "/" so GCC is able to find the target libc headers.
;; This is safe because in practice GCC uses CROSS_CPATH
;; & co to separate target and host libraries.
"--with-sysroot=/")
`( ;; Disable features not needed at this stage. `( ;; Disable features not needed at this stage.
"--disable-shared" "--enable-static" "--disable-shared" "--enable-static"
"--enable-languages=c,c++" "--enable-languages=c,c++"