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Version 16 (modified by bviktor, 14 years ago) (diff)

minor cosmetics

Building NSS on Windows

Preamble

NSS stands for Network Security Services. NSS is required to use SSL in Pidgin. NSS depends on NSPR and a shared database (SQLite since NSS 3.12), but you don't have to worry about these, there's and NSS with NSPR package which is compact thus it contains all sources required to build NSS.

To avoid confusion, building NSS on Windows doesn't make use of Cygwin. If you have it (or an other version of MinGW) installed on your computer, it's a good idea to rename its folder until you're finished building NSS to avoid conflicts.

Note: at the moment you can't build NSS completely using GCC. It fails at the final stage when linking additional tools. However, you can build all the important libraries successfully. It will hopefully be improved in the future.

Prerequisites

  1. Get NSS

Download NSS with NSPR 3.12.5. Extract it to c:\devel\nss-devel.

  1. Get MozillaBuild

Download MozillaBuild 1.4 and install it to c:\devel\mozilla-build.

  1. Get MinGW

This assumes that you have MinGW working as described in the Pidgin Building Instructions (in short, you need MinGW installed with at least gcc).

Choose build flavour

The 3 most important options are:

  • target OS
  • optimization
  • debug RTL

You can toggle them with environmental variables. Here's the matrix:

. BUILD_OPT=0 BUILD_OPT=1
. USE_DEBUG_RTL=0 USE_DEBUG_RTL=1 USE_DEBUG_RTL=0 USE_DEBUG_RTL=1
OS_TARGET=WIN95 WIN954.0_DBG.OBJ WIN954.0_DBG.OBJD WIN954.0_OPT.OBJ N/A
OS_TARGET=WINNT WINNT6.1_DBG.OBJ WINNT6.1_DBG.OBJD WINNT6.1_OPT.OBJ N/A

The version after WINNT is the version of your current OS (you can check it with the winver command). WINNT6.1 assumes you're building on Windows 7.

The default values are 0 for numerical variables and current OS for OS_TARGET. So on Windows 7 with no values set you'll end up building WINNT6.1_DBG.OBJ.

Pick the desired configuration (in other words, cell), and set the environmental variables with set. Example:

set BUILD_OPT=1
set OS_TARGET=WIN95

WARNING: it seems the builder considers any variable as 1 if it's set. So if you enter

set BUILD_OPT=0

you'll get an optimized build although you wanted a debug one. The answer lies in mozilla\security\coreconf\WIN32.mk. They check variables with ifdefs, which is just plain wrong (or they should mention it this way in the documentation).

Solution: set a variable only if you want the related build. Here's the table for seeing what you actually have to enter and what you'll get:

USE_DEBUG_RTL=1BUILD_OPT=1
OS_TARGET=WIN95WIN954.0_DBG.OBJWIN954.0_DBG.OBJDWIN954.0_OPT.OBJ
OS_TARGET=WINNTWINNT6.1_DBG.OBJWINNT6.1_DBG.OBJDWINNT6.1_OPT.OBJ

OS_TARGET is an exception and isn't affected by this error because it's not numerical, so the script checks for its value instead of its existence. As a sidenote, BUILD_OPT seems to have a higher priority, so if you enter

set BUILD_OPT=1
set USE_DEBUG_RTL=1

you'll get an optimized build without linking with the debug RTL. In case you want, for example, a debug build after an optimized, you can unset the variable by setting it without a value, such as:

set BUILD_OPT=

More info about the build variables can be found on the Build instructions page of the Mozilla Developer Central.

Patch NSS

There's an error which prevents NSS from building with GCC. Apply the following patch to c:\devel\nss-devel\nss-3.12.5-with-nspr-4.8.2\mozilla\security\nss\lib\freebl\config.mk:

  • config.mk

    old new  
    8585RESNAME = freebl.rc
    8686
    8787ifndef WINCE
     88ifndef NS_USE_GCC
    8889OS_LIBS += shell32.lib
    8990endif
     91endif
    9092
    9193ifdef NS_USE_GCC
     94OS_LIBS += -lshell32
     95DEFINES += -D_WIN32_IE=0x0400
    9296EXTRA_SHARED_LIBS += \
    9397       -L$(DIST)/lib \
    9498       -L$(NSSUTIL_LIB_DIR) \

Build NSS

The easiest way to do this with consistent results is to make a build script (the following is what the binary included with Pidgin is built with):

#!/bin/bash

#The path that we've extracted the nss source tarball into
NSS_SRC_DIR=/c/devel/nss-devel

#Set our Build Arguments:
#Optimized Build
export BUILD_OPT=1
#Target Windows NT Family
export OS_TARGET=WINNT
#Use GCC (as opposed to VC)
export NS_USE_GCC=1

#Set up the build path with MinGW and Moztools
PATH=/c/devel/pidgin-devel/win32-dev/mingw/bin:$PATH
PATH=/c/devel/mozilla-build/moztools/bin:$PATH
PATH=/c/devel/mozilla-build/msys/bin:$PATH
export PATH

pushd $NSS_SRC_DIR/nss-3.12.5-with-nspr-4.8.2/mozilla/security/nss
make nss_build_all
popd

Save this script as build.sh. Launch a command prompt and run:

c:\devel\mozilla-build\msys\bin\sh build.sh

The build will likely not complete successfully (it will bail out building .../cmd/bltest). If it gets that far, it has built the various libraries successfully.

The resulting binaries will be placed in c:\devel\nss-devel\nss-3.12.5-with-nspr-4.8.2\mozilla\dist. The contents of private and public are the same across all flavours so they can be distributed separately.

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