Unable to build on Cygwin

[ISO8807]

I tried building ugrep 1.5.4 on Windows 10 using Cygwin's gcc. That would be handy, e.g. for symlinks. The build hits problems with fseeko and ftello:

input.cpp:642:13: error: 'ftello' was not declared in this scope
input.cpp:642:13: note: suggested alternative: 'ftell'

input.cpp:737:2: error: 'fseeko' was not declared in this scope
input.cpp:737:2: note: suggested alternative: 'fseek'

If I work around this, I then hit other problems with _vsnprintf, fopen_s and strerror_s:

In file included from ugrep.cpp:104:0:
/usr/include/w32api/strsafe.h:1555:12: error: '_vsnprintf' was not declared in this scope
/usr/include/w32api/strsafe.h:1555:12: note: suggested alternative: 'vsnprintf'

ugrep.cpp:1609:9: error: 'fopen_s' was not declared in this scope
ugrep.cpp:1609:9: note: suggested alternative: '_fopen_r'

ugrep.cpp:5370:5: error: 'strerror_s' was not declared in this scope
ugrep.cpp:5370:5: note: suggested alternative: '_strerror_r'

Any chance of making this compile under Cygwin? Many thanks!

[genivia-inc]

To compile on Cygwin, c++ compiler option -std=gnu++11 will be required. The current autoconf settings use -std=c++11. I'll see if there is a way to force this to use the GNU extensions.

[genivia-inc]

I've build ugrep v1.5.5 on Cygwin by changing ./configure.ac to require GNU extensions. Should be fixed now.

[ISO8807]

Many thanks for the quick response. I tried building ugrep 1.5.5 under Cygwin. This now compiles input.cpp without errors, but compiling ugrep.cpp still fails on _vsnprintf, fopen_s and strerror_s (which probably don't exist on Cygwin). The build is now using "-std=gnu++11". make[2]: Entering directory 'ugrep-1.5.5/src' g++ -std=gnu++11 -DHAVE_CONFIG_H -I. -I.. -I../include -DPLATFORM=\"i686-pc-cygwin\" -DGREP_PATH=\"/usr/local/share/ugrep/patterns\" -Wall -Wunused -Wextra -g -O2 -MT ugrep-ugrep.o -MD -MP -MF .deps/ugrep-ugrep.Tpo -c -o ugrep-ugrep.o `test -f 'ugrep.cpp' || echo './'`ugrep.cpp In file included from ugrep.cpp:104:0: /usr/include/w32api/strsafe.h:1555:12: error: '_vsnprintf' was not declared in this scope /usr/include/w32api/strsafe.h:1555:12: note: suggested alternative: 'vsnprintf' ugrep.cpp:1609:9: error: 'fopen_s' was not declared in this scope ugrep.cpp:1609:9: note: suggested alternative: '_fopen_r' ugrep.cpp:5370:5: error: 'strerror_s' was not declared in this scope ugrep.cpp:5370:5: note: suggested alternative: '_strerror_r' I don't know if the right #ifdefs would help here. Because __CYGWIN__ is predefined, OS_WIN is also being defined.

[ISO8807]

I changed ugrep.cpp at various points to say things like the following: #if defined(OS_WIN) && !defined(__CYGWIN__) I can then build ugrep cleanly. This works fine with many files on the command line, so the other issue I had must be a limitation on the command line length for Windows native binaries.

[genivia-inc]

Thanks for the feedback. To prevent this from happening again, in ugrep.cpp I changed lines 92-94 as follows:

#if (defined(__WIN32__) || defined(_WIN32) || defined(WIN32) || defined(__BORLANDC__)) && !defined(__CYGWIN__) && !defined(__MINGW32__) && !defined(__MINGW64__)
# define OS_WIN
#endif

This update will be included in upcoming releases.

[ISO8807]

In case it helps, my edits to ugrep.cpp were as follows (line numbers are approximate): // Around line 96 #if defined(OS_WIN) && !defined(__CYGWIN__) #include <strsafe.h> #endif // Around line 464 #if !defined(OS_WIN) || defined(__CYGWIN__) // Around line 5417 #if defined(__STDC_LIB_EXT1__) || (defined(OS_WIN) && !defined(__CYGWIN__)) // Around line 5436 #if defined(__STDC_LIB_EXT1__) || (defined(OS_WIN) && !defined(__CYGWIN__))