Why do shell script comparisons often use x$VAR = xyes?
Jun 30, 2016 · I see this often in the build scripts of projects that use autotools (autoconf, automake). When somebody wants to check the value of a shell variable, they frequently use this idiom: if test "x$
Why do conditionals in autoconf scripts prefix variables with "x"?
Jun 29, 2012 · Why do conditional statements in autoconf scripts prefix their variables with "x"? For example, the macro provided by GNU to test for Boost has conditionals such as if test …
unix - shell script purpose of x in "x$VARIABLE" - Stack Overflow
Nov 26, 2009 · I'm peeking through some shell scripts - what's the purpose of the x in the comarison shcu as
Trying to remove duplicates for individual columns in a range of columns
May 30, 2017 · The code works for me, but your code differs to what you are saying is the line that crashes (i.e. .RemoveDuplicates Columns:=1, Header:xYes which has Header:xYes instead of the …
Power Query to sum for each color and each size, return a value on the ...
Dec 12, 2022 · Your result data doesn't match your sample data but this is the process. Import data in PQ Select Jacket Color and then group by from the ribbon. Enter the following: Add a new custom …
autoconf AS_IF doesn't execute correct branch - Stack Overflow
Sep 19, 2013 · I'm having a bit of a mystery in a autoconf script, specifically AS_IF. Here's the relevant code: AC_CHECK_FUNCS([eventfd], [AC_DEFINE([NN_HAVE_EVENTFD])]) AC_CHECK ...
How do you do multiple actions if-true in an AS_IF?
So, I'm working on overhauling a very old configure.in to a modern configure.ac, and I've come to a bit of a stumbling block. I'm trying to use an AS_IF statement to do 1-3 things depending on the
c - glibc 2.20 のビルドに失敗する - スタック・オーバーフロー
Oct 16, 2020 · glibc 2.20のコンパイラーバージョンチェック方法に誤りがあり、GCC 10以降を検出できないようです。 Rework compiler version check in ...
How to undefine a macro in configure.ac - Stack Overflow
Aug 12, 2015 · I am writing my configure.ac script, and have a few custom enable arguments which define macros in my C code if enabled. An example: AC_ARG_ENABLE([example], …
Gtk's XInput2 detection test doesn't work - Stack Overflow
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