Thank you Eli Both -mwindows and -mconsole are needed: -mconsole specifies the type of output (MS-DOS window rather than a dll app,say) The command lines compile and run perfectly on my un-upgraded laptop but not on my upgraded desktop which what I am showing here. With -v flag gives the following (error messages are the same). C:\Pete\PlPXmpl>gcc -c -I C:\plplot32\include\plplot x03.c C:\Pete\PlPXmpl>gcc -v -o x03.exe x03.o C:\plplot32\lib\libcsirocsa.a C:\plplot32\lib\libplplot.a C:\plplot32\lib\libqsastime.a -mconsole -mwindows -lm Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=c:/mingw/bin/../libexec/gcc/mingw32/9.2.0/lto-wrapper.exe Target: mingw32 Configured with: ../src/gcc-9.2.0/configure --build=x86_64-pc-linux-gnu --host=mingw32 --target=mingw32 --disable-win32-registry --with-arch=i586 --with-tune=generic --enable-static --enable-shared --enable-threads --enable-languages=c,c++,objc,obj-c++,fortran,ada --with-dwarf2 --disable-sjlj-exceptions --enable-version-specific-runtime-libs --enable-libgomp --disable-libvtv --with-libiconv-prefix=/mingw --with-libintl-prefix=/mingw --enable-libstdcxx-debug --disable-build-format-warnings --prefix=/mingw --with-gmp=/mingw --with-mpfr=/mingw --with-mpc=/mingw --with-isl=/mingw --enable-nls --with-pkgversion='MinGW.org GCC Build-20200227-1' Thread model: win32 gcc version 9.2.0 (MinGW.org GCC Build-20200227-1) COMPILER_PATH=c:/mingw/bin/../libexec/gcc/mingw32/9.2.0/;c:/mingw/bin/../libexec/gcc/;c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ LIBRARY_PATH=c:/mingw/bin/../lib/gcc/mingw32/9.2.0/;c:/mingw/bin/../lib/gcc/;c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/lib/;c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../ COLLECT_GCC_OPTIONS='-v' '-o' 'x03.exe' '-mconsole' '-mwindows' '-mtune=generic' '-march=i586' c:/mingw/bin/../libexec/gcc/mingw32/9.2.0/collect2.exe -plugin c:/mingw/bin/../libexec/gcc/mingw32/9.2.0/liblto_plugin-0.dll -plugin-opt=c:/mingw/bin/../libexec/gcc/mingw32/9.2.0/lto-wrapper.exe -plugin-opt=-fresolution=C:\Users\petes\AppData\Local\Temp\cc5uSPSX.res -plugin-opt=-pass-through=-lmingw32 -plugin-opt=-pass-through=-lmingwex -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_eh -plugin-opt=-pass-through=-lmoldname -plugin-opt=-pass-through=-lmsvcrt -plugin-opt=-pass-through=-lgdi32 -plugin-opt=-pass-through=-lcomdlg32 -plugin-opt=-pass-through=-ladvapi32 -plugin-opt=-pass-through=-lshell32 -plugin-opt=-pass-through=-luser32 -plugin-opt=-pass-through=-lkernel32 -plugin-opt=-pass-through=-lmingw32 -plugin-opt=-pass-through=-lmingwex -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_eh -plugin-opt=-pass-through=-lmoldname -plugin-opt=-pass-through=-lmsvcrt --subsystem windows --subsystem console -Bdynamic -o x03.exe c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../crt2.o c:/mingw/bin/../lib/gcc/mingw32/9.2.0/crtbegin.o -Lc:/mingw/bin/../lib/gcc/mingw32/9.2.0 -Lc:/mingw/bin/../lib/gcc -Lc:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/lib -Lc:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../.. x03.o C:\plplot32\lib\libcsirocsa.a C:\plplot32\lib\libplplot.a C:\plplot32\lib\libqsastime.a -lm -lmingw32 -lmingwex -lgcc -lgcc_eh -lmoldname -lmsvcrt -lgdi32 -lcomdlg32 -ladvapi32 -lshell32 -luser32 -lkernel32 -lmingw32 -lmingwex -lgcc -lgcc_eh -lmoldname -lmsvcrt c:/mingw/bin/../lib/gcc/mingw32/9.2.0/crtend.o Best wishes, Peter On Sun, 31 May 2020 at 15:52, Eli Zaretskii <eliz****@gnu*****> wrote: > > From: Peter Williams <petes****@gmail*****> > > Date: Sun, 31 May 2020 11:17:46 +0100 > > > > gcc -c -I C:\plplot32\include\plplot x03.c > > gcc -o x03.exe x03.o C:\plplot32\lib\libcsirocsa.a > C:\plplot32\lib\libplplot.a C:\plplot32\lib\libqsastime.a > > -mconsole -mwindows -lm > > Why are you using both -mconsole and -mwindows? Don't they contradict > each other? > > > c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: > > > c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../libmingw32.a(mbrscan.o):(.text+0xb6): > undefined reference to > > `SetLastError at 4' > > c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: > > > c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../libmingw32.a(wcharmap.o):(.text+0x208): > undefined reference to > > `WideCharToMultiByte at 32' > > These look like either missing import libraries on the link command > line, or maybe some snafu with including windows.h, which declares > these functions. The former problem could have been caused by the > fact that you used both -mconsole and -mwindows. I suggest to add -v > to the GCC command line and see which libraries it scans. > > _______________________________________________ > MinGW-Users mailing list > MinGW****@lists***** > > This list observes the Etiquette found at > http://www.mingw.org/Mailing_Lists. > We ask that you be polite and do the same. Disregard for the list > etiquette may cause your account to be moderated. > > _______________________________________________ > You may change your MinGW Account Options or unsubscribe at: > https://lists.osdn.me/mailman/listinfo/mingw-users > Also: mailto:mingw****@lists*****?subject=unsubscribe -- Peter Williams petes****@gmail***** 27 Ramsbury Road, St. Albans, AL1 1SN, UK -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.osdn.me/mailman/archives/mingw-users/attachments/20200531/02fd5128/attachment.html>
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