diff options
Diffstat (limited to 'docs/internals/multiple-architectures.txt')
| -rw-r--r-- | docs/internals/multiple-architectures.txt | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/docs/internals/multiple-architectures.txt b/docs/internals/multiple-architectures.txt index 5c5eece1..fee423fd 100644 --- a/docs/internals/multiple-architectures.txt +++ b/docs/internals/multiple-architectures.txt @@ -41,21 +41,25 @@ The keys to understanding this are in: The configure script inspects the CPU. It then sets - VG_PLATFORM_PRI to be the primary target - VG_PLATFORM_SEC to be the secondary target, if any + VGCONF_PLATFORM_PRI_CAPS to be the primary target + VGCONF_PLATFORM_SEC_CAPS to be the secondary target, if any It also sets one (single-arch build) or two (dual-arch build) of the following: - VG_X86_LINUX - VG_AMD64_LINUX - VG_PPC32_LINUX - VG_PPC64_LINUX + VGCONF_PLATFORMS_INCLUDE_X86_LINUX + VGCONF_PLATFORMS_INCLUDE_AMD64_LINUX + VGCONF_PLATFORMS_INCLUDE_PPC32_LINUX + VGCONF_PLATFORMS_INCLUDE_PPC64_LINUX + ... -On an amd64 system both VG_X86_LINUX and VG_AMD64_LINUX will be true -so that two versions of all the tools will be built. Similarly on a -ppc64 system both VG_PPC32_LINUX and VG_PPC64_LINUX will be defined. -For the amd64 example, the coregrind libraries will be named: +On an amd64 system both VGCONF_PLATFORMS_INCLUDE_X86_LINUX and +VGCONF_PLATFORMS_INCLUDE_AMD64_LINUX will be true so that two versions of +all the tools will be built. Similarly on a ppc64 system both +VGCONF_PLATFORMS_INCLUDE_PPC32_LINUX and +VGCONF_PLATFORMS_INCLUDE_PPC64_LINUX will be defined (unless +--enable-only32bit or --enable-only64bit is used). For the amd64 example, + the coregrind libraries will be named: libcoregrind_x86_linux.a libcoregrind_amd64_linux.a @@ -117,12 +121,7 @@ Rules for Makefile.am hacking ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In places where compilation should happen twice (on a dual-arch system), the decision about which directories and flags to use is -guarded by the symbols: - - VG_X86_LINUX - VG_AMD64_LINUX - VG_PPC32_LINUX - VG_PPC64_LINUX +guarded by the VGCONF_PLATFORMS_INCLUDE_* symbols. But there are also places where building must only happen once, for the primary architecture. These places are (at least): |