Don't depend on how echo interprets backslash escapes (#588)

The escape sequence '\n' should be translated to a new line character
when printed to version.cpp. Default mode might be implementation
dependent. At least in Fedora /usr/bin/echo defaults to -E. On the
other hand older versions might not support the -e option that enables
backslash escapes where it is not default.

Split the command into two, one for each output line, which should
produce same output on all platforms.

diff --git a/dev.mk.in b/dev.mk.in
index 250587c377d3bf9d2b8b213e8a1ed495a0e5f256..b94b2c4d1057a906aebc99c2cd083e8c095eac0c 100644 (file)
--- a/dev.mk.in
+++ b/dev.mk.in
@@ -109,7 +109,8 @@ dist_files = \
     $(built_dist_files)
 
 ifneq ($(shell sed 's/.*"\(.*\)".*/\1/' src/version.cpp 2>/dev/null),$(version))
-  $(shell echo 'extern const char CCACHE_VERSION[];\nconst char CCACHE_VERSION[] = "$(version)";' >src/version.cpp)
+  $(shell echo 'extern const char CCACHE_VERSION[];' >src/version.cpp)
+  $(shell echo 'const char CCACHE_VERSION[] = "$(version)";' >>src/version.cpp)
 endif
 src/version.o: src/version.cpp