When build fails due to lib missing, indicate which one

Empact · Empact · commit 51cd508e2fb4 · 2018-06-11T13:27:44.000-07:00
A failure of "lib missing" has limited utility.
diff --git a/configure.ac b/configure.ac
@@ -403,25 +403,25 @@ case $host in
      use_pkgconfig=no
 
      TARGET_OS=windows
-     AC_CHECK_LIB([mingwthrd],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([kernel32],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([user32],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([gdi32],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([comdlg32],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([winspool],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([winmm],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([shell32],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([comctl32],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([ole32],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([oleaut32],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([uuid],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([rpcrt4],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([advapi32],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([ws2_32],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([mswsock],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([shlwapi],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([iphlpapi],      [main],, AC_MSG_ERROR(lib missing))
-     AC_CHECK_LIB([crypt32],      [main],, AC_MSG_ERROR(lib missing))
+     AC_CHECK_LIB([mingwthrd],      [main],, AC_MSG_ERROR(libmingwthrd missing))
+     AC_CHECK_LIB([kernel32],      [main],, AC_MSG_ERROR(libkernel32 missing))
+     AC_CHECK_LIB([user32],      [main],, AC_MSG_ERROR(libuser32 missing))
+     AC_CHECK_LIB([gdi32],      [main],, AC_MSG_ERROR(libgdi32 missing))
+     AC_CHECK_LIB([comdlg32],      [main],, AC_MSG_ERROR(libcomdlg32 missing))
+     AC_CHECK_LIB([winspool],      [main],, AC_MSG_ERROR(libwinspool missing))
+     AC_CHECK_LIB([winmm],      [main],, AC_MSG_ERROR(libwinmm missing))
+     AC_CHECK_LIB([shell32],      [main],, AC_MSG_ERROR(libshell32 missing))
+     AC_CHECK_LIB([comctl32],      [main],, AC_MSG_ERROR(libcomctl32 missing))
+     AC_CHECK_LIB([ole32],      [main],, AC_MSG_ERROR(libole32 missing))
+     AC_CHECK_LIB([oleaut32],      [main],, AC_MSG_ERROR(liboleaut32 missing))
+     AC_CHECK_LIB([uuid],      [main],, AC_MSG_ERROR(libuuid missing))
+     AC_CHECK_LIB([rpcrt4],      [main],, AC_MSG_ERROR(librpcrt4 missing))
+     AC_CHECK_LIB([advapi32],      [main],, AC_MSG_ERROR(libadvapi32 missing))
+     AC_CHECK_LIB([ws2_32],      [main],, AC_MSG_ERROR(libws2_32 missing))
+     AC_CHECK_LIB([mswsock],      [main],, AC_MSG_ERROR(libmswsock missing))
+     AC_CHECK_LIB([shlwapi],      [main],, AC_MSG_ERROR(libshlwapi missing))
+     AC_CHECK_LIB([iphlpapi],      [main],, AC_MSG_ERROR(libiphlpapi missing))
+     AC_CHECK_LIB([crypt32],      [main],, AC_MSG_ERROR(libcrypt32 missing))
 
      # -static is interpreted by libtool, where it has a different meaning.
      # In libtool-speak, it's -all-static.
@@ -620,7 +620,7 @@ if test x$use_glibc_compat != xno; then
 
   #glibc absorbed clock_gettime in 2.17. librt (its previous location) is safe to link
   #in anyway for back-compat.
-  AC_CHECK_LIB([rt],[clock_gettime],, AC_MSG_ERROR(lib missing))
+  AC_CHECK_LIB([rt],[clock_gettime],, AC_MSG_ERROR(librt missing))
 
   #__fdelt_chk's params and return type have changed from long unsigned int to long int.
   # See which one is present here.
@@ -682,7 +682,7 @@ if test x$use_hardening != xno; then
 
   case $host in
     *mingw*)
-       AC_CHECK_LIB([ssp],      [main],, AC_MSG_ERROR(lib missing))
+       AC_CHECK_LIB([ssp],      [main],, AC_MSG_ERROR(libssp missing))
     ;;
   esac
 fi
