clapack: don't allow on PowerPC uClibc

On PowerPC, clapack uses the _fpu_control symbol, which isn't defined
on uClibc, so this commit disallows the selection of clapack on
PowerPC uClibc configurations. PowerPC/glibc and ARM/uClibc
configurations have been tested to build correctly.

Fixes:

  http://autobuild.buildroot.org/results/d1d/d1d721fa697956218dfc2c865dfb61911cf2600e/build-end.log

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/armadillo/Config.in

@@ -1,12 +1,14 @@
 comment "armadillo needs a toolchain w/ C++, largefile"
 	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_LARGEFILE
 	depends on !(BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el) # clapack
+	depends on !(BR2_powerpc && BR2_TOOLCHAIN_USES_UCLIBC) # clapack
 
 config BR2_PACKAGE_ARMADILLO
 	bool "armadillo"
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_LARGEFILE # clapack
 	depends on !(BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el) # clapack
+	depends on !(BR2_powerpc && BR2_TOOLCHAIN_USES_UCLIBC) # clapack
 	select BR2_PACKAGE_CLAPACK
 	help
 	  Armadillo: An Open Source C++ Linear Algebra Library for

package/clapack/Config.in

@@ -2,6 +2,9 @@ config BR2_PACKAGE_CLAPACK
 	bool "cblas/clapack"
 	depends on BR2_LARGEFILE
 	depends on !(BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el)
+	# _fpu_control is used on PowerPC, but not available with
+	# uClibc
+	depends on !(BR2_powerpc && BR2_TOOLCHAIN_USES_UCLIBC)
 	help
 	  BLAS and LAPACK C implementation (f2c'ed version of).
 
@@ -22,3 +25,4 @@ config BR2_PACKAGE_CLAPACK_ARITH_H
 comment "cblas/clapack needs a toolchain w/ largefile"
 	depends on !BR2_LARGEFILE
 	depends on !(BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el)
+	depends on !(BR2_powerpc && BR2_TOOLCHAIN_USES_UCLIBC)