CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY


/home/conan/w/cci_PR-3391/.conan/data/log.c/0.1.0/_/_/build/004079bbf42ca003eafddd27f63ba7fe4e3e681f/source_subfolder/src/log.c: In function 'log_add_callback':
/home/conan/w/cci_PR-3391/.conan/data/log.c/0.1.0/_/_/build/004079bbf42ca003eafddd27f63ba7fe4e3e681f/source_subfolder/src/log.c:116:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int i = 0; i < MAX_CALLBACKS; i++) {
   ^
/home/conan/w/cci_PR-3391/.conan/data/log.c/0.1.0/_/_/build/004079bbf42ca003eafddd27f63ba7fe4e3e681f/source_subfolder/src/log.c:116:3: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
/home/conan/w/cci_PR-3391/.conan/data/log.c/0.1.0/_/_/build/004079bbf42ca003eafddd27f63ba7fe4e3e681f/source_subfolder/src/log.c: In function 'log_log':
/home/conan/w/cci_PR-3391/.conan/data/log.c/0.1.0/_/_/build/004079bbf42ca003eafddd27f63ba7fe4e3e681f/source_subfolder/src/log.c:157:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int i = 0; i < MAX_CALLBACKS && L.callbacks[i].fn; i++) {
   ^
make[2]: *** [CMakeFiles/log.c.dir/source_subfolder/src/log.c.o] Error 1
make[1]: *** [CMakeFiles/log.c.dir/all] Error 2
make: *** [all] Error 2
log.c/0.1.0: WARN: Build folder is dirty, removing it: /home/conan/w/cci_PR-3391/.conan/data/log.c/0.1.0/_/_/build/004079bbf42ca003eafddd27f63ba7fe4e3e681f
log.c/0.1.0: ERROR: Package '004079bbf42ca003eafddd27f63ba7fe4e3e681f' build failed
log.c/0.1.0: WARN: Build folder /home/conan/w/cci_PR-3391/.conan/data/log.c/0.1.0/_/_/build/004079bbf42ca003eafddd27f63ba7fe4e3e681f
ERROR: log.c/0.1.0: Error in build() method, line 50
	cmake.build()
	ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-3391/.conan/data/log.c/0.1.0/_/_/build/004079bbf42ca003eafddd27f63ba7fe4e3e681f/build_subfolder' '--' '-j3'