There is no option to turn off the use of precompiled headers. This makes generating preprocessed source for bugs harder than necessary (you need to manually remove the pchs).
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Summary: Option to turn off usage of any precompiled header
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: preprocessor
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rguenth at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38013
