Build: add compatibility between precompiled libraries and new glibc

On Linux, precompiled libraries may be made with a glibc version that is
incompatible with the system libraries that Blender is built on. To solve
this we add a few -ffast-math symbols that can be missing.

Differential Revision: https://developer.blender.org/D6930

1 files changed, 37 insertions, 0 deletions

diff --git a/intern/libc_compat/CMakeLists.txt b/intern/libc_compat/CMakeLists.txt
new file mode 100644
index 00000000000..f8fede5673b
--- /dev/null
+++ b/intern/libc_compat/CMakeLists.txt
@@ -0,0 +1,37 @@
+# ***** BEGIN GPL LICENSE BLOCK *****
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# The Original Code is Copyright (C) 2015, Blender Foundation
+# All rights reserved.
+# ***** END GPL LICENSE BLOCK *****
+
+set(INC
+  .
+)
+
+set(INC_SYS
+)
+
+set(SRC
+  libc_compat.c
+)
+
+set(LIB
+)
+
+add_c_flag(-ffast-math)
+
+blender_add_lib(bf_intern_libc_compat "${SRC}" "${INC}" "${INC_SYS}" "${LIB}")