--- /dev/null
+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
