Managing Multiple Versions of Visual Studio

In my previous post, I described how to build an old version of GNU Make for Windows. While working on that I wanted to be able to test out different versions of Visual Studio to see if it builds successfully. Quickly switching between versions of Visual Studio was difficult so I created a batch file to help make it a lot easier.

This script takes a single argument that specifies which version of visual studio you want to set up and it then calls the appropriate vsvars32.bat file for that version of Visual Studio.

@echo off

if "%1" == "vs4" goto vs4
if "%1" == "vs6" goto vs6
if "%1" == "vs2003" goto vs2003

goto argerror

:vs4
pushd C:\msdev\bin
call vcvars32 x86
popd
goto done


:vs6
pushd C:\Program Files\Microsoft Visual Studio\VC98\Bin
call vcvars32
popd
goto done


:vs2003
pushd "C:\Program Files\Microsoft Visual Studio .NET 2003\Common7\Tools\"
call vsvars32.bat
popd
goto done

:argerror
echo no Visual Studio version specified!
echo usage: setupenv [version]
echo    where version is one of the following: vs4, vs6, vs2003

:done

Compiling Old Versions of GNU Make for Windows

I needed to build GNU Make v3.8 for Windows, turns out that this is not straightforward and I needed to patch the build script to get it to correctly build. GNU Make 3.8 is a very old version of make, the release note dates back to 2002.

The first issue is it needs an old version of Visual C++, trying to build using VS 2019 you will get a lot of warnings about deprecated flags. Reading the README.W32 file it mentions MSVC 5.x and MSVC 6.x. I opted for MSVC 6 which I happened to have a copy of in a Windows 2000 VM.

The first issue we need to resolve is a linking error caused by a missing library.

Looking through the build output we can see that it cannot find "config.h", which prevents the "subproc.lib" library from compiling which subsequently causes the error we just saw.

C:\BUILD\xxx\make-3.80\w32\subproc>cl.exe /nologo /MT /W3 /GX /Z7 /YX /Od /I .. /I . /I ../include /I ../.. /D WIN32 /D
WINDOWS32 /D _DEBUG /D _WINDOWS /FR.\WinDebug/ /Fp.\WinDebug/subproc.pch /Fo.\WinDebug/ /c sub_proc.c
sub_proc.c
sub_proc.c(9) : fatal error C1083: Cannot open include file: 'config.h': No such file or directory

The reason that "config.h" does not exist is that the file is not created by the build script. The line in the build script that creates it doesn’t get run, this is because there is a “+” at the beginning of the line which stops this line from running.

set make=gnumake
+if not exist config.h copy config.h.W32 config.h
cd w32\subproc

Removing the plus at the beginning of the line allows "subproc.lib" to be compiled and linked, but we still get linker errors.

C:\BUILD\xxx\make-3.80>echo WinRel\pathstuff.obj  1>>link.rel

C:\BUILD\xxx\make-3.80>echo off
"Linking WinRel/gnumake.exe"
function.obj : error LNK2001: unresolved external symbol _hash_init
variable.obj : error LNK2001: unresolved external symbol _hash_init
file.obj : error LNK2001: unresolved external symbol _hash_init
dir.obj : error LNK2001: unresolved external symbol _hash_init
read.obj : error LNK2001: unresolved external symbol _hash_init
variable.obj : error LNK2001: unresolved external symbol _hash_insert_at
file.obj : error LNK2001: unresolved external symbol _hash_insert_at
dir.obj : error LNK2001: unresolved external symbol _hash_insert_at
read.obj : error LNK2001: unresolved external symbol _hash_insert_at
variable.obj : error LNK2001: unresolved external symbol _hash_deleted_item
file.obj : error LNK2001: unresolved external symbol _hash_deleted_item
dir.obj : error LNK2001: unresolved external symbol _hash_deleted_item
read.obj : error LNK2001: unresolved external symbol _hash_deleted_item
variable.obj : error LNK2001: unresolved external symbol _hash_find_slot
file.obj : error LNK2001: unresolved external symbol _hash_find_slot
dir.obj : error LNK2001: unresolved external symbol _hash_find_slot
read.obj : error LNK2001: unresolved external symbol _hash_find_slot
variable.obj : error LNK2001: unresolved external symbol _hash_find_item
file.obj : error LNK2001: unresolved external symbol _hash_find_item
dir.obj : error LNK2001: unresolved external symbol _hash_find_item
function.obj : error LNK2001: unresolved external symbol _hash_find_item
variable.obj : error LNK2001: unresolved external symbol _hash_free
read.obj : error LNK2001: unresolved external symbol _hash_free
function.obj : error LNK2001: unresolved external symbol _hash_free
variable.obj : error LNK2001: unresolved external symbol _hash_map
file.obj : error LNK2001: unresolved external symbol _hash_map
variable.obj : error LNK2001: unresolved external symbol _hash_delete
file.obj : error LNK2001: unresolved external symbol _hash_delete
variable.obj : error LNK2001: unresolved external symbol _hash_print_stats
file.obj : error LNK2001: unresolved external symbol _hash_print_stats
variable.obj : error LNK2001: unresolved external symbol _hash_map_arg
file.obj : error LNK2001: unresolved external symbol _hash_dump
dir.obj : error LNK2001: unresolved external symbol _hash_insert
function.obj : error LNK2001: unresolved external symbol _hash_insert
function.obj : error LNK2001: unresolved external symbol _hash_load
.\WinRel/gnumake.exe : fatal error LNK1120: 13 unresolved externals
"WinRel build failed"

C:\BUILD\xxx\make-3.80>

There’s a lot of unresolved symbols, I searched for "hash_insert_at" and found the definition for it in "hash.c". Looking through the build script it turns out that this file is not included in the build. I added the following two lines to "build_w32.bat" just after "implicit.c" is compiled.

cl.exe /nologo /MT /W3 /GX /YX /O2 /I . /I glob /I w32/include /D NDEBUG /D WINDOWS32 /D WIN32 /D _CONSOLE /D HAVE_CONFIG_H /FR.\WinRel/ /Fp.\WinRel/%make%.pch /Fo.\WinRel/ /c hash.c
echo WinRel\hash.obj >>link.rel

Running the build script again, and voilà…..

C:\BUILD\build\make-3.80>echo off
"Linking WinRel/gnumake.exe"
LINK : warning LNK4089: all references to "ADVAPI32.dll" discarded by /OPT:REF
"WinRel build succeeded!"

C:\BUILD\build\make-3.80>

YAY!!! It now compiles, and we have gnumake.exe.

Translating a Restaurant Sign

I visited Cambridge at the weekend with my friend, she noticed a sign in a Chinese restaurant. She told me the sign said that this restaurant is Stephen Hawking’s favourite restaurant. This is my attempt at translating it.

The Chinese on the sign is:

物理学家霍金先生最喜欢的中国餐厅

Wùlǐ xué jiā huòjīn xiānshēng zuì xǐhuān de zhōngguó cāntīng

I know most of the s characters in this sentence, however there are new characters and words for me. The new words for me are physicist and Hawking.

The translation is:

The favourite Chinese restaurant of Physicist Mr Hawking.

Fixing Code Block Alignment

I’m using the Enlighter plugin for WordPress to syntax highlight code snippets in posts. When using the TwentyTwenty theme the code snippets are left-aligned instead of centered in the post. This is a known compatibility issue for this plugin, and there is a fix detailed on Github.

.enlighter-default{
    margin: 0 auto 1.25em auto;
}

I’ve already created a child theme based on TwentyTwenty so it was easy to add the above CSS to the stylesheet, and et viola, the code snippets are correctly aligned now.

Wasabi Skin Care!

芥末味的护肤品😱😂?英国人吃日料的时候都不吃芥末,他们会喜欢芥末味在护肤品里吗。我想知道销量怎样。
我喜欢图二的味道,这个牌子在英国有,但买不到这些亚洲口味,除非去中国超市买,大部分英国人都不知道这两个味道的存在。

免贵

免贵姓詹,詹天佑的詹, 名姆斯, 我来自英国

My name…

我最近听到了几个中国人用外国品牌的名字做英文名字,如Gucci 还是Armani 。我觉得我会用中国品牌来给我自己起中文名。我觉得我会叫抖音

你好, 我叫抖音

Weekend Trip

上周末我和朋友一起去旅行。 周六我们去了巴斯, 周日布里斯托尔和滨海韦斯顿。

我们先逛镇中心再去吃重庆小面。我们去了帕雷德花园和普尔特尼桥。下午我们去了罗马浴场。

晚上我们去了Green Park Brasserie吃晚餐,这个饭馆有现场乐队演出。

周日我们去了布里斯托尔,看到了Banksy艺术和克利夫顿吊桥。然后去了滨海韦斯顿,走在沙滩上。

我们还看到了两条彩虹。

Meal in Reading

我跟四个朋友一起去了Reading的中餐馆。我们每个人点了一个菜, 我点了香辣兔肉。

我们吃了香辣兔肉,羊排, 酸菜鱼, 肥肠, 红薯面条, 猪蹄。

我度过了一个很愉快的周末。

Meal in Glasgow

昨天我跟朋友在格拉斯哥吃了中餐,我们点餐了饺子和包子

饺子: 猪肉大白菜馅 – 锅贴 三鲜(猪肉,大虾, 韭菜) – 煮水饺

包子: 叉烧包

我还喝了珍珠奶茶

Yesterday me and my friend had Chinese food for lunch and dinner. At lunch we had 水煮鱼 and 麻辣豆腐 , I chose the 麻辣豆腐 as it’s the only thing I could understand on the Chinese menu 😂.

For dinner we had dumplings and baozi.

I also tried bubble tea for the first time yesterday, I had a green tea one.

Today I had a pearl milk tea.

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