[patch] Add check for CONFIG_IA32_EMULATION if using multilib and amd64 and not cross-compiling

enable-IA32_EMULATION-check.patch (text/plain), 1.39 KB, created by Steven Presser on 2014-10-09 02:17:29 UTC

--- a/sys-libs/glibc/glibc-2.20.ebuild
+++ b/sys-libs/glibc/glibc-2.20.ebuild
@@ -4,7 +4,7 @@
 
 EAPI="4"
 
-inherit eutils versionator toolchain-funcs flag-o-matic gnuconfig multilib systemd unpacker multiprocessing
+inherit eutils versionator toolchain-funcs flag-o-matic gnuconfig multilib systemd unpacker multiprocessing linux-info
 
 DESCRIPTION="GNU libc6 (also called glibc2) C library"
 HOMEPAGE="http://www.gnu.org/software/libc/libc.html"
@@ -103,6 +103,17 @@
 )
 SRC_URI+=" ${GCC_BOOTSTRAP_VER:+multilib? ( $(gentoo_uris gcc-${GCC_BOOTSTRAP_VER}-multilib-bootstrap.tar.bz2) )}"
 
+# ABI-specific checks, but run only if the right target+destination conditions are met.
+if [[ ${CATEGORY} != cross-* ]]
+then
+	# In a cross-compile situation we cannot (easily) probe the kernel that glibc will be running on.  Skip the check
+	use amd64 && use multilib && {
+		# IA32 Emulation MUST be enabled on amd64 kernels:
+		CONFIG_CHECK="IA32_EMULATION ${CONFIG_CHECK}"
+		ERROR_CONFIG_IA32_EMULATION="CONFIG_IA32_EMULATION must be enabled on amd64 kernels to compile glibc"
+	}
+fi
+
 # eblit-include [--skip] <function> [version]
 eblit-include() {
 	local skipable=false
@@ -138,6 +149,7 @@
 	eblit-run-maybe eblit-$1-post
 }
 
+pkg_pretend()   { check_extra_config      ; }
 src_unpack()    { eblit-run src_unpack    ; }
 src_prepare()   { eblit-run src_prepare   ; }
 src_configure() { eblit-run src_configure ; }