package/lapack: introduce BR2_PACKAGE_LAPACK_ARCH_SUPPORTS

This makes it easier for packages that depend on lapack to get
their dependencies correct.

The !uClibc dependency is also not sufficient: indeed, musl too does not
provide _fpu_control; only glibc does. This is the same situation as for
clapack. Add a comment about this, to mirror clapack.

Since the !glibc dependency only exists for PowerPC, treat it as
an architecture dependency.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
[yann.morin.1998@free.fr:
  - fpu_control depends on glibc, not on !uclibc
  - add or update comments accordingly
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

diff --git a/package/lapack/Config.in b/package/lapack/Config.in
index 6cd0810cb1abf6942a988a1213a5c69932459db3..e84a19bb456512ae6ab9ab02a5e73f3c97be84ac 100644 (file)
--- a/package/lapack/Config.in
+++ b/package/lapack/Config.in
@@ -1,13 +1,23 @@
+config BR2_PACKAGE_LAPACK_ARCH_SUPPORTS
+       bool
+       default y
+       # _fpu_control is used on PowerPC, but not available with
+       # uClibc or musl
+       depends on !BR2_powerpc || BR2_TOOLCHAIN_USES_GLIBC
+
+comment "lapack/blas needs a glibc toolchain"
+       depends on BR2_powerpc
+       depends on !BR2_TOOLCHAIN_USES_GLIBC
+
 comment "lapack/blas needs a toolchain w/ fortran"
-       depends on !(BR2_powerpc && BR2_TOOLCHAIN_USES_UCLIBC)
+       depends on BR2_PACKAGE_LAPACK_ARCH_SUPPORTS
        depends on !BR2_TOOLCHAIN_HAS_FORTRAN
 
 config BR2_PACKAGE_LAPACK
        bool "lapack/blas"
+       depends on BR2_PACKAGE_LAPACK_ARCH_SUPPORTS
        depends on BR2_TOOLCHAIN_HAS_FORTRAN
        depends on !BR2_PACKAGE_CLAPACK
-       # _fpu_control is used on PowerPC, but not available with uClibc
-       depends on !(BR2_powerpc && BR2_TOOLCHAIN_USES_UCLIBC)
        help
          LAPACK and BLAS FORTRAN implementation. This package
          installs two libraries: libblas and liblapack.