src: build: Adding verbose mode.

This commit adds support for the verbose parameter within `kw build`.
The verbose parameter gives details of the commands that are executed behind the scenes.

Note: This is part of the issue: kworkflow#179

Signed-off-by: Aquila Macedo <aquilamacedo@riseup.net>

documentation/man/features/build.rst

@@ -16,6 +16,8 @@ SYNOPSIS
 | *kw* (*b* | *build*) [\--llvm] [\--alert=(s | v | (sv | vs) | n)]
 | *kw* (*b* | *build*) [(-c | \--clean)] [\--alert=(s | v | (sv | vs) | n)]
 | *kw* (*b* | *build*) [(-f | \--full-cleanup)] [\--alert=(s | v | (sv | vs) | n)]
+| *kw* (*b* | *build*) [(-v | \--verbose)] [\--alert=(s | v | (sv | vs) | n)]
+
 
 DESCRIPTION
 ===========
@@ -83,6 +85,9 @@ OPTIONS
   build process, including configuration files and script output. This option also
   considers whether or not the user is using kw env.
 
+-v, \--verbose:
+  Verbose mode allows the user to see the commands executed under the hood.
+
 \--alert=(s | v | (sv | vs) | n):
   Defines the alert behaviour upon the command completion.
     | **s** enables sound notification.

src/build.sh

@@ -57,6 +57,7 @@ function kernel_build()
   local llvm
   local env_name
   local clean
+  local flag
   local output_kbuild_flag=''
 
   parse_build_options "$@"
@@ -84,6 +85,8 @@ function kernel_build()
   clean=${options_values['CLEAN']}
   full_cleanup=${options_values['FULL_CLEANUP']}
 
+  [[ -n "${options_values['VERBOSE']}" ]] && flag='VERBOSE'
+
   if [[ -n "${options_values['INFO']}" ]]; then
     build_info ''
     exit
@@ -145,6 +148,8 @@ function kernel_build()
     return "$?"
   fi
 
+  flag=${flag:-'SILENT'}
+
   command="make ${optimizations} ${llvm}ARCH=${platform_ops}${warnings}${output_path}${output_kbuild_flag}"
 
   # Let's avoid menu question by default
@@ -178,6 +183,8 @@ function build_menu_config()
   local llvm="$5"
   local cmd
 
+  flag=${flag:-'SILENT'}
+
   cmd="make -j ${llvm}ARCH=${platform_ops} ${menu_config}${env_path}"
   cmd_manager "$flag" "$cmd"
 }
@@ -192,6 +199,8 @@ function build_doc()
   local output_path="$5"
   local cmd
 
+  flag=${flag:-'SILENT'}
+
   cmd="make ${optimizations} ${doc_type}${output_path}${env_path}"
   cmd_manager "$flag" "$cmd"
 }
@@ -212,6 +221,8 @@ function build_clean()
   local env_path="$2"
   local cmd
 
+  flag=${flag:-'SILENT'}
+
   cmd="make clean${env_path}"
   cmd_manager "$flag" "$cmd"
 }
@@ -225,6 +236,8 @@ function full_cleanup()
   local env_path="$2"
   local cmd
 
+  flag=${flag:-'SILENT'}
+
   cmd="make distclean${env_path}"
   cmd_manager "$flag" "$cmd"
 }
@@ -275,8 +288,8 @@ function load_build_config()
 
 function parse_build_options()
 {
-  local long_options='help,info,menu,doc,ccache,cpu-scaling:,warnings::,save-log-to:,llvm,clean,full-cleanup'
-  local short_options='h,i,n,d,S:,w::,s:,c,f'
+  local long_options='help,info,menu,doc,ccache,cpu-scaling:,warnings::,save-log-to:,llvm,clean,full-cleanup,verbose'
+  local short_options='h,i,n,d,S:,w::,s:,c,f,v'
   local doc_type
   local file_name_size
 
@@ -303,6 +316,7 @@ function parse_build_options()
   options_values['USE_LLVM_TOOLCHAIN']="${build_config[use_llvm]:-${configurations[use_llvm]}}"
   options_values['CLEAN']=''
   options_values['FULL_CLEANUP']=''
+  options_values['VERBOSE']=''
 
   # Check llvm option
   if [[ ${options_values['USE_LLVM_TOOLCHAIN']} =~ 'yes' ]]; then
@@ -353,6 +367,10 @@ function parse_build_options()
         options_values['FULL_CLEANUP']=1
         shift
         ;;
+      --verbose | -v)
+        options_values['VERBOSE']=1
+        shift
+        ;;
       --doc | -d)
         doc_type_fallback="${configurations[doc_type]:-htmldocs}"
         options_values['DOC_TYPE']="${build_config[doc_type]:-$doc_type_fallback}"
@@ -405,6 +423,7 @@ function build_help()
     '  build (-S | --cpu-scaling) <percentage> - Scale CPU usage by factor' \
     '  build (--ccache) - Enable use of ccache' \
     '  build (-w | --warnings) [warning_levels] - Enable warnings' \
+    '  build (-v | --verbose) - Show a detailed output' \
     '  build (-s | --save-log-to) <path> - Save compilation log to path' \
     '  build (--llvm) - Enable use of the LLVM toolchain' \
     '  build (-c | --clean) - Clean option integrated into env' \