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Document superenv HOMEBREW_CCFG flags

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This commit is contained in:
Adam Vandenberg 2013-08-01 11:36:44 -07:00
parent ea3861d296
commit 27c53e5ba8
1 changed files with 15 additions and 1 deletions
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16
Library/Homebrew/superenv.rb
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@ -63,6 +63,20 @@ class << ENV
ENV['CMAKE_LIBRARY_PATH'] = determine_cmake_library_path
ENV['ACLOCAL_PATH'] = determine_aclocal_path
# The HOMEBREW_CCCFG ENV variable is used by the ENV/cc tool to control
# compiler flag stripping. It consists of a string of characters which act
# as flags. Some of these flags are mutually exclusive.
#
# u - A universal build was requested
# 3 - A 32-bit build was requested
# b - Installing from a bottle
# i - Installing from a bottle on Intel
# 6 - Installing from a bottle on 64-bit Intel
#
# On 10.8 and newer, these flags will also be present:
# s - apply fix for sed's Unicode support
# a - apply fix for apr-1-config path
# Homebrew's apple-gcc42 will be outside the PATH in superenv,
# so xcrun may not be able to find it
if ENV['HOMEBREW_CC'] == 'gcc-4.2'
@ -75,7 +89,7 @@ class << ENV
append 'HOMEBREW_CCCFG', "u", ''
end
# m32 on superenv does not add any flags. It prevents "-m32" from being erased.
# m32 on superenv does not add any CC flags. It prevents "-m32" from being erased.
def m32
append 'HOMEBREW_CCCFG', "3", ''
end