FS-287: fix bsd shell incompatibility

libs/spandsp/configure.ac

@@ -207,7 +207,7 @@ AC_CHECK_HEADERS([fenv.h])
 AC_CHECK_HEADERS([fftw3.h], , [AC_CHECK_HEADERS([fftw.h])])
 AC_CHECK_HEADERS([pcap.h])
 AC_CHECK_HEADERS([pthread.h])
-if test "${build}" == "${host}"
+if test "${build}" = "${host}"
 then
   AC_CHECK_HEADERS([X11/X.h])
 fi
@@ -253,7 +253,7 @@ AC_CHECK_HEADERS([FL/Fl_Audio_Meter.H], [], [], [],[[#include <FL/Fl.H>
 
 AC_LANG([C])
 
-if test "${build}" == "${host}"
+if test "${build}" = "${host}"
 then
     case "${host}" in
     x86_64-*)

libs/spandsp/unpack_gsm0610_data.sh

@@ -53,7 +53,7 @@ else
     cd gsm0610
 fi
 
-if [ $1x ==  --no-exe-runx ]
+if [ $1x =  --no-exe-runx ]
 then
     # Run the .exe files, which should be here
     ./FR_A.EXE
@@ -77,7 +77,7 @@ rm -rf READ_FRA.TXT
 rm -rf ACTION
 rm -rf unpacked
 
-if [ $1x ==  --no-exex ]
+if [ $1x =  --no-exex ]
 then
     # We need to prepare the .exe files to be run separately
     rm -rf *.INP