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Questions tagged [pch]

Precompile Prefix Header

In iOS development with Xcode, PCH stands for Precompile Prefix Header, to make compiling faster and avoid repeating using same header file over and over again.

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iOS Dev using XCode5 - Precompile of .pch failing, appears to be building in c context rather than ObjC

I have a project for an iOS app that Ive used in the past, the app is on the store. In attempting a recent update after using the source in Xcode 5 for the first time I find the pch precompile is failing like this: Duplicate protocol definition of…
McMac
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Assigning pch symbols in plot

I have a plot of many omega values within which I want to highlight about 40 points among the many others. The plot argument I am using is: plot( log( dog[ order( dog$gbm.dog ) , 8 ] ), pch = ifelse( dog$refseq_mrna %in%…
Marcus
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xcode searches for prefix.pch file in wrong directory

i made a xcode project and changed the name of the folder in xcode as well as in finder. then i proceeded to relink them via the method shown here: Renaming xcode 4 project and the actual folder so originally the folder was weatherScan2 which i…
snapfish
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Plotting different shapes for data points belonging to different groups in R

I am trying to plot the first two columns against each other of a matrix Y, and assigning different data points different shapes and colors according to which group they belong to in the 12th column of my data set. Below is my code: X <-…
user2976477
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pch prefix clang error

I have my prefix pch file but I don't know why its giving me this error. Please help. clang: error: no such file or directory: '/Users/djtakeuchi/Documents/Xcode Projects/Xcode Supplied Source…
Danny Takeuchi
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Inserting pch data point symbols into axis labels in R

I have combined two data sets into one graph and I would like to add the corresponding pch symbols right into the axis labels. Now, I know that solutions using text() instead of xlab and ylab and Hershey vector fonts (instead of citing a pch=16,…
Brian
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How to prevent the need for importing a framework in each class?

I have a framework called Parse, which is used in almost each Viewcontroller that I have. How can I prevent the need to put an import statement in each class, like #import Parse/Parse.h ?? I heard you should include it in the PCH file, but somehow…
Rudolf J
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imports of *.pch files are ignored for new classes - why?

I have a project created with Xcode 3 and now want to update it using Xcode 4.3. I used a *.pch file which works great - however on all the new classes I create now in Xcode4.3 this pch is ignored and I need to write the imports manually for these…
user387184
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Objective-C NSLog variant: __FILE__ without fullpath and output without datetime

For debugging purposes I've added this code to my .pch. Although I'm pretty satisfied with the output, I would like to improve the way I print the filename (without the full path) when I use __FILE__ in the DLog definition. I'm using [[NSString…
microspino
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Xcode 4 gcc failure on Archive build: skips precompile step? (also after cleanup)

as many others i face the problem that my xcode (4.3.2) tells me: cc1obj: warning:…
thedanielhanke
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Lots of imports in .pch file

I've started working on a project that has a shed load of imports in the pch file. Why would someone do this? Lazyness? I guess if I refactor them out, I could potentially decrease compile times..... is that so?
bandejapaisa
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Build input file cannot be found: After Creating Bridging Header

I add some Objective-C libraries to my SwiftUI project using bridging header, Now am facing an error: Build input file cannot be found: '/Users/.../../QPos-iOS/QPos-iOS-Bridging-Header'. Did you forget to declare this file as an output of a script…
Nisar Ahmad
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How can I use precompiled headers from a header file?

distilled.cpp #include "distilled.hpp" int main() { } distilled.hpp #include "stdafx.h" batch cl distilled.cpp /Yustdafx.h /Fpstdafx.pch /I include /std:c++20 /EHsc -DDEBUGMODE=true /c This is the ideal setup but generates compiler…
Logos King
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Forcing specific plot symbols for points in R ggplot2

I am trying to specify manually, the shape of data points in r ggplot2 but can't seem to get it to work. Below is a sample example p.est<- c(1.65, 1.55, 0.70, 1.61, 1.25) lcl<-c(1.25, 1.10, 0.50, 1.20, 1.02) ucl<-c(2.20, 2.05, 0.90, 2.20,…
Kay Jay
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Applying `set_property` on source file generated for CMake precompiled headers without hardcoding PCH path

I am using CMake's target_precompile_headers to generate a precompiled header from a PCH.hpp file in a project I'm contributing to. I need to ensure that the resultant generated source file has the exact same compilation and warning flags as the…
Vittorio Romeo
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