[toolchain] gcc: add patch to make the getenv() spec function nonfatal if requested environment variable is unset

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31390 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 14 insertions, 0 deletions

diff --git a/toolchain/gcc/patches/4.7.0/920-specs_nonfatal_getenv.patch b/toolchain/gcc/patches/4.7.0/920-specs_nonfatal_getenv.patch
new file mode 100644
index 0000000000..0f2a8704fe
--- /dev/null
+++ b/toolchain/gcc/patches/4.7.0/920-specs_nonfatal_getenv.patch
@@ -0,0 +1,14 @@
+--- a/gcc/gcc.c
++++ b/gcc/gcc.c
+@@ -7814,7 +7814,10 @@ getenv_spec_function (int argc, const ch
+ 
+   value = getenv (argv[0]);
+   if (!value)
+-    fatal_error ("environment variable %qs not defined", argv[0]);
++    {
++      warning (0, "environment variable %qs not defined", argv[0]);
++      value = "";
++    }
+ 
+   /* We have to escape every character of the environment variable so
+      they are not interpreted as active spec characters.  A