From: Michał Górny <mgorny@gentoo.org>
Date: Sun, 3 Jul 2016 07:34:43 +0000 (+0200)
Subject: sys-devel/llvm: Improve cross-compiler support, #442958
X-Git-Url: http://git.tremily.us/gitweb.cgi?a=commitdiff_plain;h=7e88be51d33474f705aad33812d1368373f5bf7b;p=gentoo.git

sys-devel/llvm: Improve cross-compiler support, #442958
---

diff --git a/sys-devel/llvm/llvm-3.8.0-r3.ebuild b/sys-devel/llvm/llvm-3.8.0-r3.ebuild
index 31be20b9c065..98b01a89ef9f 100644
--- a/sys-devel/llvm/llvm-3.8.0-r3.ebuild
+++ b/sys-devel/llvm/llvm-3.8.0-r3.ebuild
@@ -368,6 +368,23 @@ multilib_src_configure() {
 		#filter-flags -msahf -frecord-gcc-switches
 	fi
 
+	if tc-is-cross-compiler; then
+		[[ -x "/usr/bin/llvm-tblgen" ]] \
+			|| die "/usr/bin/llvm-tblgen not found or usable"
+		mycmakeargs+=(
+			-DCMAKE_CROSSCOMPILING=ON
+			-DLLVM_TABLEGEN=/usr/bin/llvm-tblgen
+		)
+
+		if use clang; then
+			[[ -x "/usr/bin/clang-tblgen" ]] \
+				|| die "/usr/bin/clang-tblgen not found or usable"
+			mycmakeargs+=(
+				-DCLANG_TABLEGEN=/usr/bin/clang-tblgen
+			)
+		fi
+	fi
+
 	cmake-utils_src_configure
 }
 
diff --git a/sys-devel/llvm/llvm-9999.ebuild b/sys-devel/llvm/llvm-9999.ebuild
index 745d373ecc3f..cb7781714431 100644
--- a/sys-devel/llvm/llvm-9999.ebuild
+++ b/sys-devel/llvm/llvm-9999.ebuild
@@ -343,6 +343,23 @@ multilib_src_configure() {
 		#filter-flags -msahf -frecord-gcc-switches
 	fi
 
+	if tc-is-cross-compiler; then
+		[[ -x "/usr/bin/llvm-tblgen" ]] \
+			|| die "/usr/bin/llvm-tblgen not found or usable"
+		mycmakeargs+=(
+			-DCMAKE_CROSSCOMPILING=ON
+			-DLLVM_TABLEGEN=/usr/bin/llvm-tblgen
+		)
+
+		if use clang; then
+			[[ -x "/usr/bin/clang-tblgen" ]] \
+				|| die "/usr/bin/clang-tblgen not found or usable"
+			mycmakeargs+=(
+				-DCLANG_TABLEGEN=/usr/bin/clang-tblgen
+			)
+		fi
+	fi
+
 	cmake-utils_src_configure
 }