unzip: use optimization from bitbake

Remove -O3 optimizations to use bitbake default optimization levels.

Upstream-Status: Inappropriate [configuration]

Signed-off-by: Mikko Rapeli <mikko.rapeli@bmw.de>

diff -rup unix-orig/configure unix/configure
--- a/unix-orig/configure	2021-04-16 10:25:03.120858292 +0000
+++ b/unix/configure	2021-04-16 10:46:43.292546138 +0000
@@ -70,7 +70,7 @@ int main()
 _EOF_
   $CC $CFLAGS -c conftest.c > /dev/null 2>/dev/null
   if test $? -eq 0; then
-    CFLAGS_OPT='-O3'
+    CFLAGS_OPT=''
     echo "  DEC C ($CFLAGS_OPT)"
   else
     # HP-UX HP C?
@@ -111,7 +111,7 @@ int main()
 _EOF_
       $CC $CFLAGS -c conftest.c > /dev/null 2>/dev/null
       if test $? -eq 0; then
-        CFLAGS_OPT='-O3'
+        CFLAGS_OPT=''
         echo "  GNU C ($CFLAGS_OPT)"
 	# Special Mac OS X shared library "ld" option?
         if test ` uname -s 2> /dev/null ` = 'Darwin'; then
diff -rup unix-orig/Makefile unix/Makefile
--- a/unix-orig/Makefile	2021-04-16 10:25:03.000863878 +0000
+++ b/unix/Makefile	2021-04-16 10:47:31.658299278 +0000
@@ -47,7 +47,7 @@ LD = $(CC)#	must match, else "unresolved
 AS = as
 LOC = $(D_USE_BZ2) $(LOCAL_UNZIP)
 AF = $(LOC)
-CFLAGS = -O
+CFLAGS = 
 CF_NOOPT = -I. -I$(IZ_BZIP2) -DUNIX $(LOC)
 CF = $(CFLAGS) $(CF_NOOPT)
 LFLAGS1 =
@@ -594,12 +594,12 @@ generic_shlib:	unix_make
 	@echo\
  'which is UnZip linked with the DLL).  This target is an example only.'
 	@echo ""
-	$(MAKE) objsdll CC=gcc CFLAGS="-O3 -Wall -fPIC -DDLL"
+	$(MAKE) objsdll CC=gcc CFLAGS="-Wall -fPIC -DDLL"
 	gcc -shared -Wl,-soname,libunzip.so.0 -o libunzip.so.0.4 $(OBJSDLL)
 	$(RM) libunzip.so.0 libunzip.so
 	$(LN) -s libunzip.so.0.4 libunzip.so.0
 	$(LN) -s libunzip.so.0 libunzip.so
-	gcc -c -O unzipstb.c
+	gcc -c unzipstb.c
 	gcc -o unzip_shlib unzipstb.o -L. -lunzip
 
 #----------------------------------------------------------------------------
@@ -775,7 +775,7 @@ freebsd:		unix_make
 # with "echo" instead).
 #
 gcc:		unix_make
-	$(MAKE) unzips CC=gcc LD=gcc CFLAGS="-O3" LF2=""
+	$(MAKE) unzips CC=gcc LD=gcc CFLAGS="" LF2=""
 
 # Heurikon HK68 (68010), UniPlus+ System V 5.0, Green Hills C-68000
 hk68:		unix_make
@@ -792,7 +792,7 @@ isc:		unix_make
 isc_gcc:	unix_make
 	$(MAKE) unzips AS=gcc CC=gcc LD=gcc CRCA_O=crc_gcc$O \
 	 LF="-shlib $(LF)" SL="-shlib $(SL)" FL="-shlib $(FL)" LF2="" \
-	 CFLAGS="-O3" LOC="-DSYSV -DASM_CRC -DNO_UID_GID -DNEED_PTEM -DNO_LCHOWN -DNO_LCHMOD $(LOC)" \
+	 CFLAGS="" LOC="-DSYSV -DASM_CRC -DNO_UID_GID -DNEED_PTEM -DNO_LCHOWN -DNO_LCHMOD $(LOC)" \
 	 AF="-DNO_UNDERLINE -Djecxz=jcxz -DALIGNMENT='.align 16' $(AF)"
 	$(STRIP) $(UNZIPS)
 
@@ -808,7 +808,7 @@ isi:		unix_make
 linux:		unix_make
 	@echo 'NOTE:  use linux_noasm target for non-Intel Linux compiles.'
 	$(MAKE) unzips CC=gcc LD=gcc AS=gcc\
-	 CFLAGS="-O3 -Wall -DASM_CRC"\
+	 CFLAGS="-Wall -DASM_CRC"\
 	 AF="-Di386 $(AF)" CRCA_O=crc_gcc$O
 # GRR:  this echo is pointless; if user gets this far, no difference to install
 #	@echo 'Be sure to use the install_asm target rather than the install target'
@@ -818,14 +818,14 @@ linux_asm:	linux
 # Linux (Posix, approximately SysV):  virtually any version since before 0.96,
 # for any platform.  Change "-O" to "-O3" or whatever, as desired...
 linux_noasm:	unix_make
-	$(MAKE) unzips CC=gcc LD=gcc CFLAGS="-O -Wall"
+	$(MAKE) unzips CC=gcc LD=gcc CFLAGS="-Wall"
 
 # Linux with lcc compiler:  __inline__ (stat.h) not recognized, and must edit
 # /usr/include/gnu/types.h to get rid of "long long" if __LCC__ defined.  -O3
 # (or -O2 or -O) is ignored.  [GRR 960828: test target only]
 #
 linux_lcc:	unix_make
-	$(MAKE) unzips CC=lcc LD=lcc CFLAGS="-O3 -Wall -D__inline__= "
+	$(MAKE) unzips CC=lcc LD=lcc CFLAGS="-Wall -D__inline__= "
 
 # Linux host with go32 (djgpp) cross-compiler (go32crs.tgz) for 32-bit DOS.
 linux_dos:	unix_make
@@ -844,7 +844,7 @@ linux_dos:	unix_make
 # library).
 #
 linux_shlib:	unix_make
-	$(MAKE) objsdll CC=gcc CFLAGS="-O3 -Wall -fPIC"\
+	$(MAKE) objsdll CC=gcc CFLAGS="-Wall -fPIC"\
 	 LOC="-DDLL -DASM_CRC $(LOC)"\
 	 AS=gcc AF="-fPIC -Di386 $(AF)" CRCA_O=crc_gcc$O
 	gcc -shared -Wl,-soname,libunzip.so.0 -o libunzip.so.0.4 $(OBJSDLL)\
@@ -858,7 +858,7 @@ linux_shlib:	unix_make
 # instead of the original UnZip version.  (libz was libgz prior to 0.94)
 linux_shlibz:	unix_make
 	$(MAKE) objsdll CC=gcc AS=gcc AF="-fPIC -Di386 $(AF)" CRCA_O=crc_gcc$O\
-	 CFLAGS="-O3 -Wall -fPIC" LOC="-DDLL -DUSE_ZLIB -DASM_CRC $(LOC)"
+	 CFLAGS="-Wall -fPIC" LOC="-DDLL -DUSE_ZLIB -DASM_CRC $(LOC)"
 	gcc -shared -Wl,-soname,libunzip.so.0 -o libunzip.so.0.4 $(OBJSDLL)\
 	 crc_gcc.pic.o
 	ln -sf libunzip.so.0.4 libunzip.so.0
@@ -871,7 +871,7 @@ lynx:		unix_make
 
 # Macintosh MacOS X (Unix-compatible enviroment), using standard compiler
 macosx:	unix_make
-	$(MAKE) unzips CFLAGS="-O3 -Wall -DBSD" LF2=""
+	$(MAKE) unzips CFLAGS="-Wall -DBSD" LF2=""
 	$(STRIP) $(UNZIPS)
 
 # Macintosh MacOS X (Unix-compatible enviroment), using gcc