Tue Jun 20 02:18:19 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>

	* Makerules (lib%.so: lib%_pic.a): Pass -soname switch giving the
 	library's name including $(libprefix) and major version number.

	* locale/locale-ctype.c (allocate_arrays): Use xmalloc and bzero
 	in place of xcalloc.

	* Makeconfig (prefix, exec_prefix, libprefix): Instead of
 	`ifndef', use the $(origin) function to only set these if they are
 	undefined, and not if they are defined to empty.

	* gnu-versions.h: New file.
	* features.h (__GNU_LIBRARY__): Increase value to 5.

1 files changed, 3 insertions, 3 deletions

diff --git a/Makeconfig b/Makeconfig
index 620f23d991..b63dabb831 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -115,12 +115,12 @@ export sysdep_dir := $(sysdep_dir)
 
 
 # Common prefix for machine-independent installation directories.
-ifndef prefix
+ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value.
 prefix = /usr/local
 endif
 
 # Common prefix for machine-dependent installation directories.
-ifndef exec_prefix
+ifeq ($(origin exec_prefix),undefined)
 exec_prefix = $(prefix)
 endif
 
@@ -133,7 +133,7 @@ endif
 # the prefix is spliced between `lib' and the name, so the linker switch
 # `-l$(libprefix)NAME' finds the library; for other files the prefix is
 # just prepended to the whole file name.
-ifndef libprefix
+ifeq ($(origin libprefix),undefined)
 libprefix =
 endif