Bug 1319011 - add gperftool support, r=ttaubert

Differential Revision: https://nss-review.dev.mozaws.net/D81

--HG--
extra : rebase_source : 006a0203201871320cf9ffe81ace5fabc2683025
extra : amend_source : 5d10c6508b93b00bec120111f2a6b247d2fd84d8

build.sh

@@ -14,6 +14,7 @@ cat << EOF
 
 Usage: ${0##*/} [-hcgv] [-j <n>] [--test] [--fuzz] [--scan-build[=output]]
                 [-m32] [--opt|-o] [--asan] [--ubsan] [--sancov[=edge|bb|func]]
+                [--pprof]
 
 This script builds NSS with gyp and ninja.
 
@@ -37,6 +38,7 @@ NSS build tool options:
     --ubsan       do an ubsan build
     --sancov      do sanitize coverage builds
                   --sancov=func sets coverage to function level for example
+    --pprof       build with gperftool support
 EOF
 }
 
@@ -101,6 +103,7 @@ while [ $# -gt 0 ]; do
         --ubsan) gyp_params+=(-Duse_ubsan=1); nspr_sanitizer ubsan ;;
         --sancov) gyp_params+=(-Duse_sancov=edge); nspr_sanitizer sancov edge ;;
         --sancov=?*) gyp_params+=(-Duse_sancov="${1#*=}"); nspr_sanitizer sancov "${1#*=}" ;;
+        --pprof) gyp_params+=(-Duse_pprof=1) ;;
         *) show_help; exit ;;
     esac
     shift

coreconf/config.gypi

@@ -97,6 +97,7 @@
     'test_build%': 0,
     'fuzz%': 0,
     'sign_libs%': 1,
+    'use_pprof%': 0,
     'nss_public_dist_dir%': '<(nss_dist_dir)/public',
     'nss_private_dist_dir%': '<(nss_dist_dir)/private',
   },
@@ -271,6 +272,9 @@
                 'cflags': ['-m64'],
                 'ldflags': ['-m64'],
               }],
+              [ 'use_pprof==1' , {
+                'ldflags': [ '-lprofiler' ],
+              }],
             ],
           }],
           [ 'disable_werror==0 and (OS=="linux" or OS=="mac")', {