[PATCH] Makefile.am: use readlink as a fallback for realpath

[Eugene Syromyatnikov]

Since realpath utility is fairly new in GNU coreutils, there could be
possibility that it is not present in the system. Instead of checking
its presence in configure script it probably makes sense to resort to
calling readlink since it is (probably) more widespread.
---
 Makefile.am |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 65f5c64..b77c2e1 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -256,7 +256,8 @@ endif
 @CODE_COVERAGE_RULES@
 CODE_COVERAGE_BRANCH_COVERAGE = 1
 CODE_COVERAGE_GENHTML_OPTIONS = $(CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT) \
-	--prefix $(shell realpath -Ls $(abs_top_srcdir)/..)
+	--prefix $(shell realpath -Ls $(abs_top_srcdir)/.. || \
+		readlink -f $(abs_top_srcdir)/..)
 CODE_COVERAGE_IGNORE_PATTERN = '/usr/include/*'
 strace_CPPFLAGS += $(CODE_COVERAGE_CPPFLAGS)
 strace_CFLAGS += $(CODE_COVERAGE_CFLAGS)
-- 
1.7.10.4