Fix --disable/enable-xxx actually enable/disable xxx feature

For example, --disable-debug-info enables debug-info, this results in
confusion.

In AC_ARG_ENABLE, the last two parts are action-if-present and
action-if-not-present, but not are action-if-enabled and
action-if-disable.

We can utilize autoconf's default and simplify configure.ac.

Signed-off-by: demin.han <[email protected]>

Author: demin-han

configure

@@ -3929,13 +3929,10 @@ fi
 if test ${enable_linux+y}
 then :
   enableval=$enable_linux;
-else $as_nop
-  enable_linux=no
-
 fi
 
 
-if test "x$enable_linux" != xno
+if test "x$enable_linux" = xyes
 then :
   default_target=linux
 
@@ -3947,43 +3944,36 @@ fi
 # Check whether --enable-debug_info was given.
 if test ${enable_debug_info+y}
 then :
-  enableval=$enable_debug_info; enable_debug_info=yes
-else $as_nop
-  enable_debug_info=no
-
+  enableval=$enable_debug_info;
 fi
 
 
-if test "x$enable_debug_info" != xyes
+if test "x$enable_debug_info" = xyes
 then :
-  debug_info=""
+  debug_info="-g"
 
 else $as_nop
-  debug_info="-g"
+  debug_info=""
 
 fi
 
 # Check whether --enable-default-pie was given.
 if test ${enable_default_pie+y}
 then :
   enableval=$enable_default_pie;
-else $as_nop
-  enable_default_pie=no
-
 fi
 
 
-if test "x$enable_default_pie" != xyes
+if test "x$enable_default_pie" = xyes
 then :
-  enable_default_pie="--disable-default-pie"
+  enable_default_pie="--enable-default-pie"
 
 else $as_nop
-  enable_default_pie="--enable-default-pie"
+  enable_default_pie="--disable-default-pie"
 
 fi
 
 
-
 # Check whether --with-arch was given.
 if test ${with_arch+y}
 then :
@@ -4091,9 +4081,6 @@ WITH_LANGUAGES=$with_languages
 if test ${enable_multilib+y}
 then :
   enableval=$enable_multilib;
-else $as_nop
-  enable_multilib=no
-
 fi
 
 
@@ -4137,7 +4124,7 @@ else $as_nop
 
 fi
 
-if test "x$enable_multilib" != xno || test "x$with_multilib_generator" != xno
+if test "x$enable_multilib" = xyes || test "x$with_multilib_generator" != xno
 then :
   multilib_flags=--enable-multilib
 
@@ -4146,7 +4133,7 @@ else $as_nop
 
 fi
 
-if test "x$enable_multilib" != xno
+if test "x$enable_multilib" = xyes
 then :
   glibc_multilib_names="rv32imac-ilp32 rv32gc-ilp32d rv64imac-lp64 rv64gc-lp64d rv64gcv-lp64d"
 
@@ -4155,7 +4142,7 @@ else $as_nop
 
 fi
 
-if test "x$enable_multilib" != xno
+if test "x$enable_multilib" = xyes
 then :
   newlib_multilib_names="rv32i-ilp32 rv32iac-ilp32 rv32im-ilp32 rv32imac-ilp32 rv32imafc-ilp32f rv64imac-lp64 rv64gc-lp64d"
 
@@ -4164,7 +4151,7 @@ else $as_nop
 
 fi
 
-if test "x$enable_multilib" != xno
+if test "x$enable_multilib" = xyes
 then :
   musl_multilib_names="rv32imac-ilp32 rv32gc-ilp32d rv64imac-lp64 rv64gc-lp64d"
 
@@ -4179,9 +4166,10 @@ then :
   enableval=$enable_gcc_checking;
 fi
 
-if test "x$enable_gcc_checking" != x
+
+if test "x$enable_gcc_checking" = xyes
 then :
-  gcc_checking=--enable-checking=$enable_gcc_checking
+  gcc_checking=--enable-checking
 
 else $as_nop
   gcc_checking=""
@@ -4195,6 +4183,7 @@ then :
   withval=$with_cmodel;
 fi
 
+
 if test "x$with_cmodel" != x
 then :
   cmodel=-mcmodel=$with_cmodel
@@ -4294,9 +4283,6 @@ fi
 if test ${enable_gdb+y}
 then :
   enableval=$enable_gdb;
-else $as_nop
-  enable_gdb=yes
-
 fi
 
 
@@ -4312,48 +4298,48 @@ fi
 # Check whether --enable-llvm was given.
 if test ${enable_llvm+y}
 then :
-  enableval=$enable_llvm; enable_llvm=yes
+  enableval=$enable_llvm;
 fi
 
 
-if test "x$enable_llvm" != xyes
+if test "x$enable_llvm" = xyes
 then :
-  enable_llvm=--disable-llvm
+  enable_llvm=--enable-llvm
 
 else $as_nop
-  enable_llvm=--enable-llvm
+  enable_llvm=--disable-llvm
 
 fi
 
 # Check whether --enable-host-gcc was given.
 if test ${enable_host_gcc+y}
 then :
-  enableval=$enable_host_gcc; enable_host_gcc=yes
+  enableval=$enable_host_gcc;
 fi
 
 
-if test "x$enable_host_gcc" != xyes
+if test "x$enable_host_gcc" = xyes
 then :
-  enable_host_gcc=--disable-host-gcc
+  enable_host_gcc=--enable-host-gcc
 
 else $as_nop
-  enable_host_gcc=--enable-host-gcc
+  enable_host_gcc=--disable-host-gcc
 
 fi
 
 # Check whether --enable-strip was given.
 if test ${enable_strip+y}
 then :
-  enableval=$enable_strip; enable_strip=yes
+  enableval=$enable_strip;
 fi
 
 
-if test "x$enable_strip" != xyes
+if test "x$enable_strip" = xyes
 then :
-  install_target=install
+  install_target=install-strip
 
 else $as_nop
-  install_target=install-strip
+  install_target=install
 
 fi
 
@@ -4642,13 +4628,10 @@ fi
 if test ${enable_libsanitizer+y}
 then :
   enableval=$enable_libsanitizer;
-else $as_nop
-  enable_libsanitizer=no
-
 fi
 
 
-if test "x$enable_libsanitizer" != xno
+if test "x$enable_libsanitizer" = xyes
 then :
   enable_libsanitizer=--enable-libsanitizer
 
@@ -4661,13 +4644,10 @@ fi
 if test ${enable_qemu_system+y}
 then :
   enableval=$enable_qemu_system;
-else $as_nop
-  enable_qemu_system=no
-
 fi
 
 
-if test "x$enable_qemu_system" != xno
+if test "x$enable_qemu_system" = xyes
 then :
   qemu_targets=riscv64-linux-user,riscv32-linux-user,riscv64-softmmu,riscv32-softmmu