> You don't need to be admin to build GCC. There are a lot of > documentation available on building GCC (including tools that automate > the process) but if you like use the same steps that I used, check > this: http://www.coding.com.br/mac/building-gcc-4-6-on-macosx/ > Although the example uses OSX you can expand to any environment. Thank you for the howto, Tiago. I've compiled in the workstation (Intel Xeon Quad core x86_64, running RHEL) three versions: 4.4.0 (the same that the machine has), 4.4.4 (the same than I have in my Debian) and 4.5.1 (I couldn't compile 4.6 version). Results are variable (in other piece of code appart the test ported in this thread): 4.4.0: The warnings concerning char input arguments do not appears. A new warnings that the RHEL version can't detect appears as "conversion to long unsigned int from int may alter its value". Long unsigned int is size_t in my code (other versions says size_t in the warnings). 4.4.4: The warnings concerning char input arguments do not appears. A new warnings that the RHEL version can't detect appears as "conversion to double from size_t may alter its value". Conversion to long unsigned int from int is not detected in this version. 4.5.1: Same behavior as 4.4.4 As we can see, apparently (I don't know if I have had anything wrong) some warning detections are broken or activate-deactivate in some gcc versions or versions provided by different distributions. I think that this can be bad for programmers trying to follow strictly a standard (C99, for example). I my Debian, for example, none warnings appears. My complete gcc call is: gcc -std=c99 -pedantic -Wall -Wextra -Wconversion -Wmissing-prototypes -Wstrict-prototypes -Wshadow -Wcast-qual -Wcast-align -Wwrite-strings -Wnested-externs -O3 -funroll-loops -fno-common -fshort-enums On the other hand, if I use clang+llvm compiler suite (clang+llvm 2.7 in the repositories for my Debian GNU/Linux on iBook PowerPC G4) the warnings concerning conversion to double from size_t are detected (and no more). The clang call is: clang -std=c99 -pedantic -Wextra-tokens -O3 -fno-common -- ***************************************** José Luis García Pallero jgpallero@xxxxxxxxx (o< / / \ V_/_ Use Debian GNU/Linux and enjoy! *****************************************
