C compiler cannot create executables

Uhm, that's a new one i haven't seen before. I doubt that your compiler is borked (i doubt even Apple would be so bold as to break the compiler just to keep up their walled garden), but just to make sure, write a file "hello.c":

#include <stdio.h>
int main() {
   printf("Hello, World!\n");
   return 0;
}
[download]

Then compile it with mininal arguments and execute it:

$ cc -o hello hello.c
$ ./hello
Hello, World!
[download]

If that works, you could try with the whole kaboodle of flags that the compile script thinks it should use:

$ cc -fno-common -DPERL_DARWIN -mmacosx-version-min=14.4 -DNO_POSIX_20
+08_LOCALE -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/
+local/include   -fno-common -DPERL_DARWIN -mmacosx-version-min=14.4 -
+DNO_POSIX_2008_LOCALE -fno-strict-aliasing -pipe -fstack-protector-st
+rong -I/usr/local/include  -mmacosx-version-min=14.4 -fstack-protecto
+r-strong -L/usr/local/lib -o hello hello.c

$ ./hello
[download]

Does this also work or do you get any errors?

All built with no errors. Executed perfectly.

terryhimes@Users-MacBook-Pro perltk % perl -V:cc cc='cc'; Also compiled and ran hello.c and it worked perfectly. I will investigate your other suggestions comparing the successful build next.

configure: error: installation or configuration problem: C compiler cannot create executables.

The test compiles a hello-world-style program and tries to run it. If that fails, you get this error message. One reason is compiling for a different platform or set of libraries. That's a typical problem when cross-compiling. Another problems I can imagine is a filesystem mounted with the noexec option.

Alexander

I've built hello_world.c and ran it with no issues. Also, Removed Perl Downloaded latest version of Xcode v16 Beta Used Perlbrew to reinstall Perl perlbrew install perl-5.38.2 perlbrew switch perl-5.38.2 All installed and tested Ok. Tried installing Tk again. FAIL cpanm Tk Same errors. Grrrr.

Try cpanm --look Tk . This will take you to the Tk build dir. If you are versed with autotools edit ./configure to find the position where it fails. It should be creating a C test program to compile and saving it to a tmp dir. And also there should be the compilation command line (which is also printed on the console). Halt it there and add lines to tell you where that test C program is AND what is the path of cc with which cc.

Also run ./configure with explicitly specifying the fullpath to the compiler: ./confgure CC=/x/y/z/cc (or something like this)

The possible reasons for the errors you get are: 1) test C program includes files which are not found, 2) the compiler executable is not what you think it is (note that it does not use the fullpath to the compiler), 3) compiler flags are wrong (note that you may already have ENV vars in your shell which specify CFLAGS, LDFLAGS, CC etc. 4) the compilation fails at the linking stage because LIBRARIES are not found or wrong ones are used. This is/was controlled with LD_LIBRARY_PATH and apple-specific DYLD_LIBRARY_PATH. Do you have those set in your ENV? Their use is frowned upon but sometimes is the last resort.

Far fetched but: check what user the compilation is run under (whoami) and whether it has in its path the specific compiler and uses that compiler with no extra CFLAGS, library paths etc. from login settings e.g. in bashrc

export CFLAGS="-ansi"
export LDFLAGS="-ansi"
export CPPFLAGS="-ansi"
[download]

Introduction

• I am experiencing what I think is a similar issue (see below); was this ever resolved?
• I included the whole log file as maybe there is something of interest.
• I have sent a private message to user thimes in parallel.

Background Information

• running on "macOS Sonoma 14.6.1 (23G93)"
• following MacOS instructions on https://github.com/DistributedProofreaders/guiguts/blob/master/INSTALL.md
• executing perl install_cpan_modules.pl

Issue when running the following

 
hughdagg@Hughs-iMac guiguts % pwd
/Users/hughdagg/guiguts
hughdagg@Hughs-iMac guiguts % perl install_cpan_modules.pl
cpanm (App::cpanminus) version 1.7047 (/opt/homebrew/bin/cpanm)
perl version 5.038002 (/opt/homebrew/Cellar/perl/5.38.2_1/bin/perl)

  %Config:
    archname=darwin-thread-multi-2level
    installsitelib=/opt/homebrew/Cellar/perl/5.38.2_1/lib/perl5/site_p
+erl/5.38
    installsitebin=/opt/homebrew/Cellar/perl/5.38.2_1/bin
    installman1dir=/opt/homebrew/Cellar/perl/5.38.2_1/share/man/man1
    installman3dir=/opt/homebrew/Cellar/perl/5.38.2_1/share/man/man3
    sitearchexp=/opt/homebrew/opt/perl/lib/perl5/site_perl/5.38/darwin
+-thread-multi-2level
    sitelibexp=/opt/homebrew/opt/perl/lib/perl5/site_perl/5.38
    archlibexp=/opt/homebrew/opt/perl/lib/perl5/5.38/darwin-thread-mul
+ti-2level
    privlibexp=/opt/homebrew/opt/perl/lib/perl5/5.38
  %ENV:
    PERL5LIB=/Users/hughdagg/perl5/lib/perl5
    PERL_LOCAL_LIB_ROOT=/Users/hughdagg/perl5
    PERL_MB_OPT=--install_base "/Users/hughdagg/perl5"
    PERL_MM_OPT=INSTALL_BASE=/Users/hughdagg/perl5
  @INC:
    FatPacked::4983002120=HASH(0x129029408)
    /Users/hughdagg/perl5/lib/perl5/5.38.2/darwin-thread-multi-2level
    /Users/hughdagg/perl5/lib/perl5/5.38.2
    /Users/hughdagg/perl5/lib/perl5/darwin-thread-multi-2level
    /Users/hughdagg/perl5/lib/perl5
    /opt/homebrew/opt/perl/lib/perl5/site_perl/5.38/darwin-thread-mult
+i-2level
    /opt/homebrew/opt/perl/lib/perl5/site_perl/5.38
    /opt/homebrew/opt/perl/lib/perl5/5.38/darwin-thread-multi-2level
    /opt/homebrew/opt/perl/lib/perl5/5.38
    /opt/homebrew/lib/perl5/site_perl/5.38/darwin-thread-multi-2level
    /opt/homebrew/lib/perl5/site_perl/5.38
File::HomeDir is up to date. (1.006)
--> Working on Tk
Fetching http://www.cpan.org/authors/id/S/SR/SREZIC/Tk-804.036.tar.gz 
+... OK
Configuring Tk-804.036 ... N/A
! Configure failed for Tk-804.036. See /Users/hughdagg/.cpanm/work/172
+4193754.77888/build.log for details.
Failed trying to install Tk
hughdagg@Hughs-iMac guiguts % perl --version

This is perl 5, version 38, subversion 2 (v5.38.2) built for darwin-th
+read-multi-2level

Copyright 1987-2023, Larry Wall

Perl may be copied only under the terms of either the Artistic License
+ or the
GNU General Public License, which may be found in the Perl 5 source ki
+t.

Complete documentation for Perl, including FAQ lists, should be found 
+on
this system using "man perl" or "perldoc perl".  If you have access to
+ the
Internet, point your browser at https://www.perl.org/, the Perl Home P
+age.

hughdagg@Hughs-iMac guiguts %
[download]

Log File

 
hughdagg@Hughs-iMac guiguts % cat /Users/hughdagg/.cpanm/work/17241937
+54.77888/build.log
cpanm (App::cpanminus) 1.7047 on perl 5.038002 built for darwin-thread
+-multi-2level
Work directory is /Users/hughdagg/.cpanm/work/1724193754.77888
You have make /usr/bin/make
You have /usr/bin/curl
You have /usr/bin/tar: bsdtar 3.5.3 - libarchive 3.5.3 zlib/1.2.12 lib
+lzma/5.4.3 bz2lib/1.0.8 
You have /usr/bin/unzip
Searching Tk () on cpanmetadb ...
--> Working on Tk
Fetching http://www.cpan.org/authors/id/S/SR/SREZIC/Tk-804.036.tar.gz
-> OK
Unpacking Tk-804.036.tar.gz
Entering Tk-804.036
Checking configure dependencies from META.json
Checking if you have ExtUtils::MakeMaker 6.58 ... Yes (7.70)
Configuring Tk-804.036
Running Makefile.PL
PPM for perl5.038002
Test Compiling config/perlrx.c
/opt/homebrew/Cellar/perl/5.38.2_1/bin/perl is installed in /opt/homeb
+rew/opt/perl/lib/perl5/5.38/darwin-thread-multi-2level okay
Test Compiling config/pmop.c
Test Compiling config/pregcomp2.c
Test Compiling config/regexp511.c
Test Compiling config/signedchar.c
Test Compile/Run config/unsigned.c
Test Compiling config/Ksprintf.c
Test Compiling config/svtrv.c
Test Compiling config/copstashset.c
Test Compiling config/tod.c
Generic gettimeofday()
Test Compile/Run config/xft.c
Using -L/usr/X11R6/lib to find /usr/X11R6/lib/libX11.dylib
Using -I/usr/X11R6/include to find /usr/X11R6/include/X11/Xlib.h
Using -I/opt/X11/include/freetype2 to find /opt/X11/include/freetype2/
+freetype/freetype.h
xlib='-L/usr/X11R6/lib' xinc='-I/usr/X11R6/include'
Seem to have -lXft
Writing Tk/Config.pm
Writing pTk/tkConfig.h
Checking if your kit is complete...
Looks good
Generating Dependencies for darwin, win_arch=x
Test Compiling config/Hstrtoul.c
Test Compiling config/Hstrdup.c
Test Compiling config/Hstrcasecmp.c
Extracting ClientWin.c
Extracting default.h
Extracting exWinHandle.c
Extracting img.h
Extracting imgBMP.c
Extracting imgInit.c
Extracting imgInt.h
Extracting imgObj.c
Extracting imgUtil.c
Extracting imgWindow.c
Extracting imgXBM.c
Extracting imgXPM.c
Extracting ks_names.h
Extracting moredefs.h
Extracting port.h
Extracting stbDItem.c
Extracting stbDiStyle.c
Extracting tclAsync.c
Extracting tclDecls.h
Extracting tclEvent.c
Extracting tclHash.c
Extracting tclIntDecls.h
Extracting tclIntPlatDecls.h
Extracting tclMath.h
Extracting tclNotify.c
Extracting tclPlatDecls.h
Extracting tclPreserve.c
Extracting tclTimer.c
Extracting tclUnixEvent.c
Extracting tclUnixNotfy.c
Extracting tclUnixTime.c
Extracting tix.h
Extracting tixBitmaps.h
Extracting tixCompat.c
Extracting tixDItem.c
Extracting tixDef.h
Extracting tixDiITxt.c
Extracting tixDiImg.c
Extracting tixDiStyle.c
Extracting tixDiText.c
Extracting tixDiWin.c
Extracting tixError.c
Extracting tixForm.c
Extracting tixForm.h
Extracting tixFormMisc.c
Extracting tixGrData.c
Extracting tixGrData.h
Extracting tixGrFmt.c
Extracting tixGrRC.c
Extracting tixGrSel.c
Extracting tixGrSort.c
Extracting tixGrUtl.c
Extracting tixGrid.c
Extracting tixGrid.h
Extracting tixHLCol.c
Extracting tixHLHdr.c
Extracting tixHLInd.c
Extracting tixHList.c
Extracting tixHList.h
Extracting tixImgCmp.c
Extracting tixImgXpm.c
Extracting tixImgXpm.h
Extracting tixInputO.c
Extracting tixInt.h
Extracting tixList.c
Extracting tixMwm.c
Extracting tixNBFrame.c
Extracting tixPort.h
Extracting tixScroll.c
Extracting tixSmpLs.c
Extracting tixTList.c
Extracting tixTList.h
Extracting tixUnixDraw.c
Extracting tixUnixInt.h
Extracting tixUnixPort.h
Extracting tixUnixWm.c
Extracting tixUnixXpm.c
Extracting tixUtils.c
Extracting tk.h
Extracting tk3d.c
Extracting tk3d.h
Extracting tkAtom.c
Extracting tkBind.c
Extracting tkBitmap.c
Extracting tkButton.c
Extracting tkButton.h
Extracting tkCanvArc.c
Extracting tkCanvBmap.c
Extracting tkCanvImg.c
Extracting tkCanvLine.c
Extracting tkCanvPoly.c
Extracting tkCanvPs.c
Extracting tkCanvText.c
Extracting tkCanvUtil.c
Extracting tkCanvWind.c
Extracting tkCanvas.c
Extracting tkCanvas.h
Extracting tkClipboard.c
Extracting tkCmds.c
Extracting tkColor.c
Extracting tkColor.h
Extracting tkConfig.c
Extracting tkCursor.c
Extracting tkDecls.h
Extracting tkEntry.c
Extracting tkError.c
Extracting tkEvent.c
Extracting tkFileFilter.c
Extracting tkFileFilter.h
Extracting tkFocus.c
Extracting tkFont.c
Extracting tkFont.h
Extracting tkFrame.c
Extracting tkGC.c
Extracting tkGeometry.c
Extracting tkGet.c
Extracting tkGrab.c
Extracting tkGrid.c
Extracting tkImage.c
Extracting tkImgBmap.c
Extracting tkImgGIF.c
Extracting tkImgPPM.c
Extracting tkImgPhoto.c
Extracting tkImgUtil.c
Extracting tkInitScript.h
Extracting tkInt.h
Extracting tkIntDecls.h
Extracting tkIntPlatDecls.h
Extracting tkIntXlibDecls.h
Extracting tkListbox.c
Extracting tkMacWinMenu.c
Extracting tkMenu.c
Extracting tkMenu.h
Extracting tkMenuDraw.c
Extracting tkMenubutton.c
Extracting tkMenubutton.h
Extracting tkMessage.c
Extracting tkObj.c
Extracting tkOldConfig.c
Extracting tkOption.c
Extracting tkPack.c
Extracting tkPanedWindow.c
Extracting tkPlace.c
Extracting tkPlatDecls.h
Extracting tkPointer.c
Extracting tkPort.h
Extracting tkRectOval.c
Extracting tkScale.c
Extracting tkScale.h
Extracting tkScrollbar.c
Extracting tkScrollbar.h
Extracting tkSelect.c
Extracting tkSelect.h
Extracting tkSquare.c
Extracting tkStubImg.c
Extracting tkStyle.c
Extracting tkText.c
Extracting tkText.h
Extracting tkTextBTree.c
Extracting tkTextDisp.c
Extracting tkTextImage.c
Extracting tkTextIndex.c
Extracting tkTextMark.c
Extracting tkTextTag.c
Extracting tkTextWind.c
Extracting tkTrig.c
Extracting tkUndo.c
Extracting tkUndo.h
Extracting tkUnix.c
Extracting tkUnix3d.c
Extracting tkUnixButton.c
Extracting tkUnixColor.c
Extracting tkUnixConfig.c
Extracting tkUnixCursor.c
Extracting tkUnixDefault.h
Extracting tkUnixDialog.c
Extracting tkUnixDraw.c
Extracting tkUnixEmbed.c
Extracting tkUnixEvent.c
Extracting tkUnixFocus.c
Extracting tkUnixFont.c
Extracting tkUnixInit.c
Extracting tkUnixInt.h
Extracting tkUnixKey.c
Extracting tkUnixMenu.c
Extracting tkUnixMenubu.c
Extracting tkUnixPort.h
Extracting tkUnixScale.c
Extracting tkUnixScrlbr.c
Extracting tkUnixSelect.c
Extracting tkUnixSend.c
Extracting tkUnixWm.c
Extracting tkUnixXId.c
Extracting tkUnixXft.c
Extracting tkUtil.c
Extracting tkVisual.c
Extracting tkWindow.c
Extracting xbytes.h
Finding dependencies for ClientWin.c
Finding dependencies for Lang_f.c
Finding dependencies for Xlib_f.c
Finding dependencies for XrmOption.c
Finding dependencies for imgBMP.c
Finding dependencies for imgInit.c
Finding dependencies for imgInt_f.c
Finding dependencies for imgObj.c
Finding dependencies for imgUtil.c
Finding dependencies for imgWindow.c
Finding dependencies for imgXBM.c
Finding dependencies for imgXPM.c
Finding dependencies for ptkCanvGrid.c
Finding dependencies for ptkCanvGroup.c
Finding dependencies for stbDItem.c
Finding dependencies for stbDashCustom.c
Finding dependencies for stbDiStyle.c
Finding dependencies for strGlue.c
Finding dependencies for strdup.c
Finding dependencies for strtoul.c
Finding dependencies for tclAsync.c
Finding dependencies for tclDecls_f.c
Finding dependencies for tclEvent.c
Finding dependencies for tclHash.c
Finding dependencies for tclNotify.c
Finding dependencies for tclPreserve.c
Finding dependencies for tclTimer.c
Finding dependencies for tclUnixEvent.c
Finding dependencies for tclUnixNotfy.c
Finding dependencies for tclUnixTime.c
Finding dependencies for tixCompat.c
Finding dependencies for tixDItem.c
Finding dependencies for tixDiITxt.c
Finding dependencies for tixDiImg.c
Finding dependencies for tixDiStyle.c
Finding dependencies for tixDiText.c
Finding dependencies for tixDiWin.c
Finding dependencies for tixError.c
Finding dependencies for tixForm.c
Finding dependencies for tixFormMisc.c
Finding dependencies for tixGrData.c
Finding dependencies for tixGrFmt.c
Finding dependencies for tixGrRC.c
Finding dependencies for tixGrSel.c
Finding dependencies for tixGrSort.c
Finding dependencies for tixGrUtl.c
Finding dependencies for tixGrid.c
Finding dependencies for tixHLCol.c
Finding dependencies for tixHLHdr.c
Finding dependencies for tixHLInd.c
Finding dependencies for tixHList.c
Finding dependencies for tixImgCmp.c
Finding dependencies for tixImgXpm.c
Finding dependencies for tixImgXpm_f.c
Finding dependencies for tixInputO.c
Finding dependencies for tixInt_f.c
Finding dependencies for tixList.c
Finding dependencies for tixMwm.c
Finding dependencies for tixNBFrame.c
Finding dependencies for tixScroll.c
Finding dependencies for tixSmpLs.c
Finding dependencies for tixTList.c
Finding dependencies for tixUnixDraw.c
Finding dependencies for tixUnixWm.c
Finding dependencies for tixUnixXpm.c
Finding dependencies for tixUtils.c
Finding dependencies for tixVars.c
Finding dependencies for tix_f.c
Finding dependencies for tk3d.c
Finding dependencies for tkAtom.c
Finding dependencies for tkBind.c
Finding dependencies for tkBitmap.c
Finding dependencies for tkButton.c
Finding dependencies for tkCanvArc.c
Finding dependencies for tkCanvBmap.c
Finding dependencies for tkCanvImg.c
Finding dependencies for tkCanvLine.c
Finding dependencies for tkCanvPoly.c
Finding dependencies for tkCanvPs.c
Finding dependencies for tkCanvText.c
Finding dependencies for tkCanvUtil.c
Finding dependencies for tkCanvWind.c
Finding dependencies for tkCanvas.c
Finding dependencies for tkClipboard.c
Finding dependencies for tkCmds.c
Finding dependencies for tkColor.c
Finding dependencies for tkConfig.c
Finding dependencies for tkCursor.c
Finding dependencies for tkDecls_f.c
Finding dependencies for tkEntry.c
Finding dependencies for tkError.c
Finding dependencies for tkEvent.c
Finding dependencies for tkEvent_f.c
Finding dependencies for tkFileFilter.c
Finding dependencies for tkFocus.c
Finding dependencies for tkFont.c
Finding dependencies for tkFrame.c
Finding dependencies for tkGC.c
Finding dependencies for tkGeometry.c
Finding dependencies for tkGet.c
Finding dependencies for tkGrab.c
Finding dependencies for tkGrid.c
Finding dependencies for tkImage.c
Finding dependencies for tkImgBmap.c
Finding dependencies for tkImgGIF.c
Finding dependencies for tkImgPPM.c
Finding dependencies for tkImgPhoto.c
Finding dependencies for tkImgPhoto_f.c
Finding dependencies for tkIntDecls_f.c
Finding dependencies for tkIntPlatDecls_f.c
Finding dependencies for tkIntXlibDecls_f.c
Finding dependencies for tkInt_f.c
Finding dependencies for tkListbox.c
Finding dependencies for tkMenu.c
Finding dependencies for tkMenuDraw.c
Finding dependencies for tkMenubutton.c
Finding dependencies for tkMessage.c
Finding dependencies for tkObj.c
Finding dependencies for tkOldConfig.c
Finding dependencies for tkOption.c
Finding dependencies for tkOption_f.c
Finding dependencies for tkPack.c
Finding dependencies for tkPanedWindow.c
Finding dependencies for tkPlace.c
Finding dependencies for tkPlatDecls_f.c
Finding dependencies for tkPointer.c
Finding dependencies for tkProperty.c
Finding dependencies for tkRectOval.c
Finding dependencies for tkScale.c
Finding dependencies for tkScrollbar.c
Finding dependencies for tkSelect.c
Finding dependencies for tkSquare.c
Finding dependencies for tkStubImg.c
Finding dependencies for tkStyle.c
Finding dependencies for tkText.c
Finding dependencies for tkTextBTree.c
Finding dependencies for tkTextDisp.c
Finding dependencies for tkTextImage.c
Finding dependencies for tkTextIndex.c
Finding dependencies for tkTextMark.c
Finding dependencies for tkTextTag.c
Finding dependencies for tkTextWind.c
Finding dependencies for tkTrig.c
Finding dependencies for tkUndo.c
Finding dependencies for tkUnix.c
Finding dependencies for tkUnix3d.c
Finding dependencies for tkUnixButton.c
Finding dependencies for tkUnixColor.c
Finding dependencies for tkUnixConfig.c
Finding dependencies for tkUnixCursor.c
Finding dependencies for tkUnixDialog.c
Finding dependencies for tkUnixDraw.c
Finding dependencies for tkUnixEmbed.c
Finding dependencies for tkUnixEvent.c
Finding dependencies for tkUnixFocus.c
Finding dependencies for tkUnixFont.c
Finding dependencies for tkUnixInit.c
Finding dependencies for tkUnixKey.c
Finding dependencies for tkUnixMenu.c
Finding dependencies for tkUnixMenubu.c
Finding dependencies for tkUnixScale.c
Finding dependencies for tkUnixScrlbr.c
Finding dependencies for tkUnixSelect.c
Finding dependencies for tkUnixSend.c
Finding dependencies for tkUnixWm.c
Finding dependencies for tkUnixXId.c
Finding dependencies for tkUnixXft.c
Finding dependencies for tkUtil.c
Finding dependencies for tkVisual.c
Finding dependencies for tkWindow.c
Finding dependencies for tk_f.c
Writing MYMETA.yml and MYMETA.json
Warning: LINKTYPE set to '', no longer necessary
Writing MYMETA.yml and MYMETA.json
Checking if your kit is complete...
Looks good
Writing MYMETA.yml and MYMETA.json
Finding dependencies for X.xs
Finding dependencies for Xlib.xs
Finding dependencies for WinPhoto.xs
Finding dependencies for Pixmap.xs
Finding dependencies for TixGrid.xs
Finding dependencies for Text.xs
Finding dependencies for TList.xs
Finding dependencies for Scrollbar.xs
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Finding dependencies for Scale.xs
Writing MYMETA.yml and MYMETA.json
'pkg-config libpng' failed, continue with fallback values for cflags a
+nd libs...
'pkg-config zlib' failed, continue with fallback values for cflags and
+ libs...
Test Compile/Run config/has_png.c
Building libpng.a
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking whether to enable maintainer-specific portions of Makefiles..
+. no
checking for gcc... cc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether cc accepts -g... yes
checking for cc option to accept ANSI C... none needed
checking for style of include used by make... GNU
checking dependency style of cc... gcc3
checking for a sed that does not truncate output... /usr/bin/sed
checking build system type... arm-apple-darwin23.6.0
checking host system type... arm-apple-darwin23.6.0
checking for egrep... grep -E
checking for ld used by cc... /Library/Developer/CommandLineTools/usr/
+bin/ld
checking if the linker (/Library/Developer/CommandLineTools/usr/bin/ld
+) is GNU ld... no
checking how to run the C preprocessor... cc -E
checking for sed... /usr/bin/sed
checking for a BSD-compatible install... /usr/bin/install -c
checking whether ln -s works... yes
checking whether make sets $(MAKE)... (cached) yes
checking for /Library/Developer/CommandLineTools/usr/bin/ld option to 
+reload object files... -r
checking for BSD-compatible nm... /usr/bin/nm -B
checking how to recognise dependent libraries... pass_all
checking for ANSI C header files... no
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking dlfcn.h usability... yes
checking dlfcn.h presence... yes
checking for dlfcn.h... yes
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... gcc3
checking how to run the C++ preprocessor... g++ -E
checking for g77... no
checking for f77... no
checking for xlf... no
checking for frt... no
checking for pgf77... no
checking for fort77... no
checking for fl32... no
checking for af77... no
checking for f90... no
checking for xlf90... no
checking for pgf90... no
checking for epcf90... no
checking for f95... no
checking for fort... no
checking for xlf95... no
checking for ifc... no
checking for efc... no
checking for pgf95... no
checking for lf95... no
checking for gfortran... no
checking whether we are using the GNU Fortran 77 compiler... no
checking whether  accepts -g... no
checking the maximum length of command line arguments... 786432
checking command to parse /usr/bin/nm -B output from cc object... ok
checking for objdir... .libs
checking for ar... ar
checking for ranlib... ranlib
checking for strip... strip
checking if cc supports -fno-rtti -fno-exceptions... yes
checking for cc option to produce PIC... -fno-common
checking if cc PIC flag -fno-common works... yes
checking if cc static flag -static works... no
checking if cc supports -c -o file.o... yes
checking whether the cc linker (/Library/Developer/CommandLineTools/us
+r/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... darwin23.6.0 dyld
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
configure: creating libtool
appending configuration tag "CXX" to libtool
rm: conftest.dSYM: is a directory
checking for ld used by g++... /Library/Developer/CommandLineTools/usr
+/bin/ld
checking if the linker (/Library/Developer/CommandLineTools/usr/bin/ld
+) is GNU ld... no
checking whether the g++ linker (/Library/Developer/CommandLineTools/u
+sr/bin/ld) supports shared libraries... yes
checking for g++ option to produce PIC... -fno-common
checking if g++ PIC flag -fno-common works... rm: conftest.dSYM: is a 
+directory
yes
checking if g++ static flag -static works... rm: conftest.dSYM: is a d
+irectory
no
checking if g++ supports -c -o file.o... rm: conftest.dSYM: is a direc
+tory
yes
checking whether the g++ linker (/Library/Developer/CommandLineTools/u
+sr/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... darwin23.6.0 dyld
checking how to hardcode library paths into programs... immediate
appending configuration tag "F77" to libtool
checking for ANSI C header files... (cached) no
checking malloc.h usability... no
checking malloc.h presence... no
checking for malloc.h... no
checking for stdlib.h... (cached) yes
checking for string.h... (cached) yes
checking for strings.h... (cached) yes
checking for an ANSI C-conforming const... yes
checking for size_t... yes
checking whether struct tm is in sys/time.h or time.h... time.h
checking for stdlib.h... (cached) yes
checking for GNU libc compatible malloc... yes
checking for working strtod... no
checking for pow... yes
checking for memset... yes
checking for pow... (cached) yes
checking for zlibVersion in -lz... yes
checking if assembler code in pnggccrd.c can be compiled... yes
checking if libraries can be versioned... no
configure: WARNING: *** You have not enabled versioned symbols.
configure: pkgconfig directory is ${libdir}/pkgconfig
configure: creating ./config.status
config.status: creating Makefile
config.status: creating libpng.pc
config.status: creating libpng-config
config.status: creating config.h
config.status: executing depfiles commands
Building static library libz.a version 1.2.3 with cc.
Checking for unistd.h... Yes.
Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]pr
+intf()
Checking for vsnprintf() in stdio.h... Yes.
Checking for return value of vsnprintf()... Yes.
Checking for errno.h... Yes.
Checking for mmap support... Yes.
Finding dependencies for PNG.xs
Finding dependencies for imgPNG.c
Finding dependencies for NBFrame.xs
Finding dependencies for Mwm.xs
Finding dependencies for Menubutton.xs
Finding dependencies for Listbox.xs
Test Compile/Run config/has_jpeg.c
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Writing MYMETA.yml and MYMETA.json
Building jpeg/libjpeg.a
checking for gcc... cc
checking whether the C compiler (cc -fno-common -DPERL_DARWIN -mmacosx
+-version-min=14.2 -DNO_POSIX_2008_LOCALE -fno-strict-aliasing -pipe -
+fstack-protector-strong   -fno-common -DPERL_DARWIN -mmacosx-version-
+min=14.2 -DNO_POSIX_2008_LOCALE -fno-strict-aliasing -pipe -fstack-pr
+otector-strong  -mmacosx-version-min=14.2 -fstack-protector-strong) w
+orks... no
configure: error: installation or configuration problem: C compiler ca
+nnot create executables.
ERROR from evaluation of /Users/hughdagg/.cpanm/work/1724193754.77888/
+Tk-804.036/JPEG/Makefile.PL: ERROR from evaluation of /Users/hughdagg
+/.cpanm/work/1724193754.77888/Tk-804.036/JPEG/jpeg/Makefile.PL: Error
+ opening Makefile: No such file or directory at ./Makefile.PL line 41
+.
 at ./Makefile.PL line 41.
    require ./Makefile.PL called at /opt/homebrew/opt/perl/lib/perl5/5
+.38/ExtUtils/MakeMaker.pm line 258
    ExtUtils::MakeMaker::eval_in_x(PACK021=HASH(0x128c09818), "/Users/
+hughdagg/.cpanm/work/1724193754.77888/Tk-804.036/JPEG/"...) called at
+ /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 245
    eval {...} called at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtil
+s/MakeMaker.pm line 245
    ExtUtils::MakeMaker::eval_in_subdirs(PACK021=HASH(0x128c09818)) ca
+lled at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm l
+ine 823
    ExtUtils::MakeMaker::new("MM", PACK021=HASH(0x128c09818)) called a
+t /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 78
    ExtUtils::MakeMaker::WriteMakefile("VERSION", 804.036, "XS_VERSION
+", 804.036, "DEFINE", "", "INC", "-I.. -Ijpeg -I/usr/X11R6/include -I
+/opt/X11/include/freetype2", ...) called at /Users/hughdagg/.cpanm/wo
+rk/1724193754.77888/Tk-804.036/Tk/MMutil.pm line 588
    Tk::MMutil::TkExtMakefile("MYEXTLIB", "jpeg/libjpeg.a", "INC", "-I
+jpeg", "NAME", "Tk::JPEG", "EXE_FILES", ARRAY(0x128c26b40), ...) call
+ed at ./Makefile.PL line 26
    require ./Makefile.PL called at /opt/homebrew/opt/perl/lib/perl5/5
+.38/ExtUtils/MakeMaker.pm line 258
    ExtUtils::MakeMaker::eval_in_x(PACK001=HASH(0x128833250), "/Users/
+hughdagg/.cpanm/work/1724193754.77888/Tk-804.036/JPEG") called at /op
+t/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 245
    eval {...} called at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtil
+s/MakeMaker.pm line 245
    ExtUtils::MakeMaker::eval_in_subdirs(PACK001=HASH(0x128833250)) ca
+lled at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm l
+ine 823
    ExtUtils::MakeMaker::new("MM", PACK001=HASH(0x128833250)) called a
+t /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 78
    ExtUtils::MakeMaker::WriteMakefile("VERSION", 804.036, "XS_VERSION
+", 804.036, "DEFINE", "", "INC", "-I/usr/X11R6/include -I/opt/X11/inc
+lude/freetype2", ...) called at /Users/hughdagg/.cpanm/work/172419375
+4.77888/Tk-804.036/Tk/MMutil.pm line 588
    Tk::MMutil::TkExtMakefile("VERSION", 804.036, "EXE_FILES", ARRAY(0
+x13960afa0), "NAME", "Tk", "DIR", ARRAY(0x1388297e0), ...) called at 
+Makefile.PL line 80
 at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 2
+66.
    ExtUtils::MakeMaker::eval_in_x(PACK021=HASH(0x128c09818), "/Users/
+hughdagg/.cpanm/work/1724193754.77888/Tk-804.036/JPEG/"...) called at
+ /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 245
    eval {...} called at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtil
+s/MakeMaker.pm line 245
    ExtUtils::MakeMaker::eval_in_subdirs(PACK021=HASH(0x128c09818)) ca
+lled at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm l
+ine 823
    ExtUtils::MakeMaker::new("MM", PACK021=HASH(0x128c09818)) called a
+t /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 78
    ExtUtils::MakeMaker::WriteMakefile("VERSION", 804.036, "XS_VERSION
+", 804.036, "DEFINE", "", "INC", "-I.. -Ijpeg -I/usr/X11R6/include -I
+/opt/X11/include/freetype2", ...) called at /Users/hughdagg/.cpanm/wo
+rk/1724193754.77888/Tk-804.036/Tk/MMutil.pm line 588
    Tk::MMutil::TkExtMakefile("MYEXTLIB", "jpeg/libjpeg.a", "INC", "-I
+jpeg", "NAME", "Tk::JPEG", "EXE_FILES", ARRAY(0x128c26b40), ...) call
+ed at ./Makefile.PL line 26
    require ./Makefile.PL called at /opt/homebrew/opt/perl/lib/perl5/5
+.38/ExtUtils/MakeMaker.pm line 258
    ExtUtils::MakeMaker::eval_in_x(PACK001=HASH(0x128833250), "/Users/
+hughdagg/.cpanm/work/1724193754.77888/Tk-804.036/JPEG") called at /op
+t/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 245
    eval {...} called at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtil
+s/MakeMaker.pm line 245
    ExtUtils::MakeMaker::eval_in_subdirs(PACK001=HASH(0x128833250)) ca
+lled at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm l
+ine 823
    ExtUtils::MakeMaker::new("MM", PACK001=HASH(0x128833250)) called a
+t /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 78
    ExtUtils::MakeMaker::WriteMakefile("VERSION", 804.036, "XS_VERSION
+", 804.036, "DEFINE", "", "INC", "-I/usr/X11R6/include -I/opt/X11/inc
+lude/freetype2", ...) called at /Users/hughdagg/.cpanm/work/172419375
+4.77888/Tk-804.036/Tk/MMutil.pm line 588
    Tk::MMutil::TkExtMakefile("VERSION", 804.036, "EXE_FILES", ARRAY(0
+x13960afa0), "NAME", "Tk", "DIR", ARRAY(0x1388297e0), ...) called at 
+Makefile.PL line 80
 at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 2
+49.
    ExtUtils::MakeMaker::eval_in_subdirs(PACK021=HASH(0x128c09818)) ca
+lled at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm l
+ine 823
    ExtUtils::MakeMaker::new("MM", PACK021=HASH(0x128c09818)) called a
+t /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 78
    ExtUtils::MakeMaker::WriteMakefile("VERSION", 804.036, "XS_VERSION
+", 804.036, "DEFINE", "", "INC", "-I.. -Ijpeg -I/usr/X11R6/include -I
+/opt/X11/include/freetype2", ...) called at /Users/hughdagg/.cpanm/wo
+rk/1724193754.77888/Tk-804.036/Tk/MMutil.pm line 588
    Tk::MMutil::TkExtMakefile("MYEXTLIB", "jpeg/libjpeg.a", "INC", "-I
+jpeg", "NAME", "Tk::JPEG", "EXE_FILES", ARRAY(0x128c26b40), ...) call
+ed at ./Makefile.PL line 26
    require ./Makefile.PL called at /opt/homebrew/opt/perl/lib/perl5/5
+.38/ExtUtils/MakeMaker.pm line 258
    ExtUtils::MakeMaker::eval_in_x(PACK001=HASH(0x128833250), "/Users/
+hughdagg/.cpanm/work/1724193754.77888/Tk-804.036/JPEG") called at /op
+t/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 245
    eval {...} called at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtil
+s/MakeMaker.pm line 245
    ExtUtils::MakeMaker::eval_in_subdirs(PACK001=HASH(0x128833250)) ca
+lled at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm l
+ine 823
    ExtUtils::MakeMaker::new("MM", PACK001=HASH(0x128833250)) called a
+t /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 78
    ExtUtils::MakeMaker::WriteMakefile("VERSION", 804.036, "XS_VERSION
+", 804.036, "DEFINE", "", "INC", "-I/usr/X11R6/include -I/opt/X11/inc
+lude/freetype2", ...) called at /Users/hughdagg/.cpanm/work/172419375
+4.77888/Tk-804.036/Tk/MMutil.pm line 588
    Tk::MMutil::TkExtMakefile("VERSION", 804.036, "EXE_FILES", ARRAY(0
+x13960afa0), "NAME", "Tk", "DIR", ARRAY(0x1388297e0), ...) called at 
+Makefile.PL line 80
 at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 2
+66.
    ExtUtils::MakeMaker::eval_in_x(PACK001=HASH(0x128833250), "/Users/
+hughdagg/.cpanm/work/1724193754.77888/Tk-804.036/JPEG") called at /op
+t/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 245
    eval {...} called at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtil
+s/MakeMaker.pm line 245
    ExtUtils::MakeMaker::eval_in_subdirs(PACK001=HASH(0x128833250)) ca
+lled at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm l
+ine 823
    ExtUtils::MakeMaker::new("MM", PACK001=HASH(0x128833250)) called a
+t /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 78
    ExtUtils::MakeMaker::WriteMakefile("VERSION", 804.036, "XS_VERSION
+", 804.036, "DEFINE", "", "INC", "-I/usr/X11R6/include -I/opt/X11/inc
+lude/freetype2", ...) called at /Users/hughdagg/.cpanm/work/172419375
+4.77888/Tk-804.036/Tk/MMutil.pm line 588
    Tk::MMutil::TkExtMakefile("VERSION", 804.036, "EXE_FILES", ARRAY(0
+x13960afa0), "NAME", "Tk", "DIR", ARRAY(0x1388297e0), ...) called at 
+Makefile.PL line 80
 at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 2
+49.
    ExtUtils::MakeMaker::eval_in_subdirs(PACK001=HASH(0x128833250)) ca
+lled at /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm l
+ine 823
    ExtUtils::MakeMaker::new("MM", PACK001=HASH(0x128833250)) called a
+t /opt/homebrew/opt/perl/lib/perl5/5.38/ExtUtils/MakeMaker.pm line 78
    ExtUtils::MakeMaker::WriteMakefile("VERSION", 804.036, "XS_VERSION
+", 804.036, "DEFINE", "", "INC", "-I/usr/X11R6/include -I/opt/X11/inc
+lude/freetype2", ...) called at /Users/hughdagg/.cpanm/work/172419375
+4.77888/Tk-804.036/Tk/MMutil.pm line 588
    Tk::MMutil::TkExtMakefile("VERSION", 804.036, "EXE_FILES", ARRAY(0
+x13960afa0), "NAME", "Tk", "DIR", ARRAY(0x1388297e0), ...) called at 
+Makefile.PL line 80
-> N/A
-> FAIL Configure failed for Tk-804.036. See /Users/hughdagg/.cpanm/wo
+rk/1724193754.77888/build.log for details.
hughdagg@Hughs-iMac guiguts %
[download]

Contents of config.log

Here is the config.log file from the above issue:

hughdagg@Hughs-iMac guiguts % cat /Users/hughdagg/.cpanm/work/17246004
+27.93037/Tk-804.036/JPEG/jpeg/./config.log
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

configure:538: checking for gcc
configure:615: checking whether the C compiler (cc -fno-common -DPERL_
+DARWIN -mmacosx-version-min=14.2 -DNO_POSIX_2008_LOCALE -fno-strict-a
+liasing -pipe -fstack-protector-strong   -fno-common -DPERL_DARWIN -m
+macosx-version-min=14.2 -DNO_POSIX_2008_LOCALE -fno-strict-aliasing -
+pipe -fstack-protector-strong  -mmacosx-version-min=14.2 -fstack-prot
+ector-strong) works
configure:629: cc -o conftest -fno-common -DPERL_DARWIN -mmacosx-versi
+on-min=14.2 -DNO_POSIX_2008_LOCALE -fno-strict-aliasing -pipe -fstack
+-protector-strong    -fno-common -DPERL_DARWIN -mmacosx-version-min=1
+4.2 -DNO_POSIX_2008_LOCALE -fno-strict-aliasing -pipe -fstack-protect
+or-strong  -mmacosx-version-min=14.2 -fstack-protector-strong conftes
+t.c  1>&5
configure:626:1: error: type specifier missing, defaults to 'int'; ISO
+ C99 and later do not support implicit int [-Wimplicit-int]
main(){return(0);}
^
int
1 error generated.
configure: failed program was:
#line 625 "configure"
#include "confdefs.h"
main(){return(0);}
hughdagg@Hughs-iMac guiguts %
[download]

Thanks for any help in advance, Hugh :)

Background

So I did a little more digging and think the issue revolves around the fact that Clang version 15 and 16 come with new warnings;
for more information see https://www.redhat.com/en/blog/new-warnings-and-errors-clang-16. In particular error "ISO C99 and later do not support implicit int -Wimplicit-int"

Question

Is there any way to pass CFLAGS into the "perl install_cpan_modules.pl"?

Current Directory

hughdagg@Hughs-iMac jpeg % pwd
/Users/hughdagg/.cpanm/work/1724625386.12184/Tk-804.036/JPEG/jpeg
[download]

Run Default Configure

hughdagg@Hughs-iMac jpeg % ./configure                  
checking for gcc... gcc
checking whether the C compiler (gcc  ) works... no
configure: error: installation or configuration problem: C compiler ca
+nnot create executables.
[download]

Log File

hughdagg@Hughs-iMac jpeg % cat config.log
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

configure:538: checking for gcc
configure:615: checking whether the C compiler (gcc  ) works
configure:629: gcc -o conftest    conftest.c  1>&5
configure:626:1: error: type specifier missing, defaults to 'int'; ISO
+ C99 and later do not support implicit int [-Wimplicit-int]
main(){return(0);}
^
int
1 error generated.
configure: failed program was:
#line 625 "configure"
#include "confdefs.h"
main(){return(0);}
[download]

Run Configure with c89 standard

hughdagg@Hughs-iMac jpeg % ./configure "CFLAGS=-std=c89"
checking for gcc... gcc
checking whether the C compiler (gcc -std=c89 ) works... yes
checking whether the C compiler (gcc -std=c89 ) is a cross-compiler...
+ no
checking whether we are using GNU C... yes
checking how to run the C preprocessor... gcc -E
checking for function prototypes... yes
checking for stddef.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for size_t... yes
checking for type unsigned char... yes
checking for type unsigned short... yes
checking for type void... yes
checking for working const... yes
checking for inline... __inline__
checking for broken incomplete types... ok
checking for short external names... ok
checking to see if char is signed... yes
checking to see if right shift is signed... yes
checking to see if fopen accepts b spec... no
checking for a BSD compatible install... /usr/bin/install -c
checking for ranlib... ranlib
checking libjpeg version number... 62
creating ./config.status
creating Makefile
creating jconfig.h
jconfig.h is unchanged
hughdagg@Hughs-iMac jpeg %
[download]

Log File

There are issues but the compiler flags turn them into warnings

hughdagg@Hughs-iMac jpeg % cat config.log               
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

configure:538: checking for gcc
configure:615: checking whether the C compiler (gcc -std=c89 ) works
configure:629: gcc -o conftest -std=c89   conftest.c  1>&5
configure:649: checking whether the C compiler (gcc -std=c89 ) is a cr
+oss-compiler
configure:654: checking whether we are using GNU C
configure:663: gcc -E conftest.c
configure:681: checking how to run the C preprocessor
configure:702: gcc -E  conftest.c >/dev/null 2>conftest.out
configure:742: checking for function prototypes
configure:765: gcc -c -std=c89  conftest.c 1>&5
configure:792: checking for stddef.h
configure:802: gcc -E  conftest.c >/dev/null 2>conftest.out
configure:828: checking for stdlib.h
configure:838: gcc -E  conftest.c >/dev/null 2>conftest.out
configure:864: checking for string.h
configure:874: gcc -E  conftest.c >/dev/null 2>conftest.out
configure:900: checking for size_t
configure:923: gcc -c -std=c89  conftest.c 1>&5
configure:994: checking for type unsigned char
configure:1003: gcc -c -std=c89  conftest.c 1>&5
configure:1018: checking for type unsigned short
configure:1027: gcc -c -std=c89  conftest.c 1>&5
configure:1042: checking for type void
configure:1072: gcc -c -std=c89  conftest.c 1>&5
configure:1088: checking for working const
configure:1142: gcc -c -std=c89  conftest.c 1>&5
configure:1163: checking for inline
configure:1174: gcc -c -std=c89  conftest.c 1>&5
configure:1224: checking for broken incomplete types
configure:1233: gcc -c -std=c89  conftest.c 1>&5
configure:1248: checking for short external names
configure:1260: gcc -o conftest -std=c89   conftest.c  1>&5
configure:1275: checking to see if char is signed
configure:1306: gcc -o conftest -std=c89   conftest.c  1>&5
configure:1295:5: error: implicitly declaring library function 'printf
+' with type 'int (const char *, ...)' [-Werror,-Wimplicit-function-de
+claration]
    printf("Hmm, it seems 'char' is not eight bits wide on your machin
+e.\n");
    ^
configure:1295:5: note: include the header <stdio.h> or explicitly pro
+vide a declaration for 'printf'
configure:1302:3: error: implicitly declaring library function 'exit' 
+with type 'void (int) __attribute__((noreturn))' [-Werror,-Wimplicit-
+function-declaration]
  exit(is_char_signed((int) signed_char_check));
  ^
configure:1302:3: note: include the header <stdlib.h> or explicitly pr
+ovide a declaration for 'exit'
2 errors generated.
configure: failed program was:
#line 1282 "configure"
#include "confdefs.h"

#ifdef HAVE_PROTOTYPES
int is_char_signed (int arg)
#else
int is_char_signed (arg)
     int arg;
#endif
{
  if (arg == 189) {        /* expected result for unsigned char */
    return 0;            /* type char is unsigned */
  }
  else if (arg != -67) {    /* expected result for signed char */
    printf("Hmm, it seems 'char' is not eight bits wide on your machin
+e.\n");
    printf("I fear the JPEG software will not work at all.\n\n");
  }
  return 1;            /* assume char is signed otherwise */
}
char signed_char_check = (char) (-67);
main() {
  exit(is_char_signed((int) signed_char_check));
}
configure:1323: checking to see if right shift is signed
configure:1358: gcc -o conftest -std=c89   conftest.c  1>&5
configure:1349:3: error: implicitly declaring library function 'printf
+' with type 'int (const char *, ...)' [-Werror,-Wimplicit-function-de
+claration]
  printf("Right shift isn't acting as I expect it to.\n");
  ^
configure:1349:3: note: include the header <stdio.h> or explicitly pro
+vide a declaration for 'printf'
configure:1345:16: warning: shifting a negative signed value is undefi
+ned [-Wshift-negative-value]
  res |= (~0L) << (32-4);
         ~~~~~ ^
configure:1354:3: error: implicitly declaring library function 'exit' 
+with type 'void (int) __attribute__((noreturn))' [-Werror,-Wimplicit-
+function-declaration]
  exit(is_shifting_signed(-0x7F7E80B1L));
  ^
configure:1354:3: note: include the header <stdlib.h> or explicitly pr
+ovide a declaration for 'exit'
1 warning and 2 errors generated.
configure: failed program was:
#line 1328 "configure"
#include "confdefs.h"

#ifdef HAVE_PROTOTYPES
int is_shifting_signed (long arg)
#else
int is_shifting_signed (arg)
     long arg;
#endif
/* See whether right-shift on a long is signed or not. */
{
  long res = arg >> 4;

  if (res == -0x7F7E80CL) {    /* expected result for signed shift */
    return 1;            /* right shift is signed */
  }
  /* see if unsigned-shift hack will fix it. */
  /* we can't just test exact value since it depends on width of long.
+.. */
  res |= (~0L) << (32-4);
  if (res == -0x7F7E80CL) {    /* expected result now? */
    return 0;            /* right shift is unsigned */
  }
  printf("Right shift isn't acting as I expect it to.\n");
  printf("I fear the JPEG software will not work at all.\n\n");
  return 0;            /* try it with unsigned anyway */
}
main() {
  exit(is_shifting_signed(-0x7F7E80B1L));
}
configure:1375: checking to see if fopen accepts b spec
configure:1390: gcc -o conftest -std=c89   conftest.c  1>&5
configure:1385:5: error: implicitly declaring library function 'exit' 
+with type 'void (int) __attribute__((noreturn))' [-Werror,-Wimplicit-
+function-declaration]
    exit(0);
    ^
configure:1385:5: note: include the header <stdlib.h> or explicitly pr
+ovide a declaration for 'exit'
1 error generated.
configure: failed program was:
#line 1380 "configure"
#include "confdefs.h"

#include <stdio.h>
main() {
  if (fopen("conftestdata", "wb") != NULL)
    exit(0);
  exit(1);
}
configure:1436: checking for a BSD compatible install
configure:1488: checking for ranlib
configure:1650: checking libjpeg version number
hughdagg@Hughs-iMac jpeg %
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