Makefile.in: Avoid gcc warnings on non-linux systems.

-fdata-sections, -ffunction-sections, -Wl,--gc-sections, -Wstrict-prototypes
and -Wshadow produce quite a lot of warnings on at least NetBSD and MacOS. So
use these flags only on Linux.

diff --git a/Makefile.in b/Makefile.in
index c5d5027a09858b256660b18fb67bb26efe34d5c4..827d04f9f7415a698bb9e520dc7c06e6a416084d 100644 (file)
--- a/Makefile.in
+++ b/Makefile.in
@@ -26,13 +26,15 @@ DEBUG_CPPFLAGS += -Wredundant-decls
 # many warnings about trivial stuff
 # CPPFLAGS += -Wconversion
 
-# uncomment this if your compiler supports it
-# LDFLAGS += -Wl,--gc-sections
-
+ifeq ($(uname_S),Linux)
+       CPPFLAGS += -fdata-sections -ffunction-sections
+       LDFLAGS += -Wl,--gc-sections
+       CPPFLAGS += -Wstrict-prototypes
+       CPPFLAGS += -Wshadow
+endif
 CPPFLAGS += -Os
 CPPFLAGS += -Wall
 CPPFLAGS += -Wuninitialized
-CPPFLAGS += -Wstrict-prototypes
 CPPFLAGS += -Wchar-subscripts
 CPPFLAGS += -Wformat-security
 CPPFLAGS += -DBINDIR='"$(BINDIR)"'
@@ -43,9 +45,7 @@ CPPFLAGS += -DCC_VERSION='"$(cc_version)"'
 CPPFLAGS += -Werror-implicit-function-declaration
 CPPFLAGS += -Wmissing-format-attribute
 CPPFLAGS += -Wunused-macros
-CPPFLAGS += -Wshadow
 CPPFLAGS += -Wbad-function-cast
-CPPFLAGS += -fdata-sections -ffunction-sections
 CPPFLAGS += -DMAIN_INPUT_FILE_IS_$(*F)
 CPPFLAGS += @SSL_CPPFLAGS@
 CPPFLAGS += @ncurses_cppflags@